Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (96 commits)
  no need for list_for_each_entry_safe()/resetting with superblock list
  Fix sget() race with failing mount
  vfs: don't hold s_umount over close_bdev_exclusive() call
  sysv: do not mark superblock dirty on remount
  sysv: do not mark superblock dirty on mount
  btrfs: remove junk sb_dirt change
  BFS: clean up the superblock usage
  AFFS: wait for sb synchronization when needed
  AFFS: clean up dirty flag usage
  cifs: truncate fallout
  mbcache: fix shrinker function return value
  mbcache: Remove unused features
  add f_flags to struct statfs(64)
  pass a struct path to vfs_statfs
  update VFS documentation for method changes.
  All filesystems that need invalidate_inode_buffers() are doing that explicitly
  convert remaining ->clear_inode() to ->evict_inode()
  Make ->drop_inode() just return whether inode needs to be dropped
  fs/inode.c:clear_inode() is gone
  fs/inode.c:evict() doesn't care about delete vs. non-delete paths now
  ...

Fix up trivial conflicts in fs/nilfs2/super.c

Documentation/filesystems/Locking

@@ -92,8 +92,8 @@ prototypes:
 	void (*destroy_inode)(struct inode *);
 	void (*dirty_inode) (struct inode *);
 	int (*write_inode) (struct inode *, int);
-	void (*drop_inode) (struct inode *);
-	void (*delete_inode) (struct inode *);
+	int (*drop_inode) (struct inode *);
+	void (*evict_inode) (struct inode *);
 	void (*put_super) (struct super_block *);
 	void (*write_super) (struct super_block *);
 	int (*sync_fs)(struct super_block *sb, int wait);
@@ -101,14 +101,13 @@ prototypes:
 	int (*unfreeze_fs) (struct super_block *);
 	int (*statfs) (struct dentry *, struct kstatfs *);
 	int (*remount_fs) (struct super_block *, int *, char *);
-	void (*clear_inode) (struct inode *);
 	void (*umount_begin) (struct super_block *);
 	int (*show_options)(struct seq_file *, struct vfsmount *);
 	ssize_t (*quota_read)(struct super_block *, int, char *, size_t, loff_t);
 	ssize_t (*quota_write)(struct super_block *, int, const char *, size_t, loff_t);
 
 locking rules:
-	All may block.
+	All may block [not true, see below]
 	None have BKL
 			s_umount
 alloc_inode:
@@ -116,22 +115,25 @@ destroy_inode:
 dirty_inode:				(must not sleep)
 write_inode:
 drop_inode:				!!!inode_lock!!!
-delete_inode:
+evict_inode:
 put_super:		write
 write_super:		read
 sync_fs:		read
 freeze_fs:		read
 unfreeze_fs:		read
-statfs:			no
-remount_fs:		maybe		(see below)
-clear_inode:
+statfs:			maybe(read)	(see below)
+remount_fs:		write
 umount_begin:		no
 show_options:		no		(namespace_sem)
 quota_read:		no		(see below)
 quota_write:		no		(see below)
 
-->remount_fs() will have the s_umount exclusive lock if it's already mounted.
-When called from get_sb_single, it does NOT have the s_umount lock.
+->statfs() has s_umount (shared) when called by ustat(2) (native or
+compat), but that's an accident of bad API; s_umount is used to pin
+the superblock down when we only have dev_t given us by userland to
+identify the superblock.  Everything else (statfs(), fstatfs(), etc.)
+doesn't hold it when calling ->statfs() - superblock is pinned down
+by resolving the pathname passed to syscall.
 ->quota_read() and ->quota_write() functions are both guaranteed to
 be the only ones operating on the quota file by the quota code (via
 dqio_sem) (unless an admin really wants to screw up something and

Documentation/filesystems/porting

@@ -273,3 +273,48 @@ it's safe to remove it.  If you don't need it, remove it.
 deliberate; as soon as struct block_device * is propagated in a reasonable
 way by that code fixing will become trivial; until then nothing can be
 done.
+
+[mandatory]
+
+	block truncatation on error exit from ->write_begin, and ->direct_IO
+moved from generic methods (block_write_begin, cont_write_begin,
+nobh_write_begin, blockdev_direct_IO*) to callers.  Take a look at
+ext2_write_failed and callers for an example.
+
+[mandatory]
+
+	->truncate is going away.  The whole truncate sequence needs to be
+implemented in ->setattr, which is now mandatory for filesystems
+implementing on-disk size changes.  Start with a copy of the old inode_setattr
+and vmtruncate, and the reorder the vmtruncate + foofs_vmtruncate sequence to
+be in order of zeroing blocks using block_truncate_page or similar helpers,
+size update and on finally on-disk truncation which should not fail.
+inode_change_ok now includes the size checks for ATTR_SIZE and must be called
+in the beginning of ->setattr unconditionally.
+
+[mandatory]
+
+	->clear_inode() and ->delete_inode() are gone; ->evict_inode() should
+be used instead.  It gets called whenever the inode is evicted, whether it has
+remaining links or not.  Caller does *not* evict the pagecache or inode-associated
+metadata buffers; getting rid of those is responsibility of method, as it had
+been for ->delete_inode().
+	->drop_inode() returns int now; it's called on final iput() with inode_lock
+held and it returns true if filesystems wants the inode to be dropped.  As before,
+generic_drop_inode() is still the default and it's been updated appropriately.
+generic_delete_inode() is also alive and it consists simply of return 1.  Note that
+all actual eviction work is done by caller after ->drop_inode() returns.
+	clear_inode() is gone; use end_writeback() instead.  As before, it must
+be called exactly once on each call of ->evict_inode() (as it used to be for
+each call of ->delete_inode()).  Unlike before, if you are using inode-associated
+metadata buffers (i.e. mark_buffer_dirty_inode()), it's your responsibility to
+call invalidate_inode_buffers() before end_writeback().
+	No async writeback (and thus no calls of ->write_inode()) will happen
+after end_writeback() returns, so actions that should not overlap with ->write_inode()
+(e.g. freeing on-disk inode if i_nlink is 0) ought to be done after that call.
+
+	NOTE: checking i_nlink in the beginning of ->write_inode() and bailing out
+if it's zero is not *and* *never* *had* *been* enough.  Final unlink() and iput()
+may happen while the inode is in the middle of ->write_inode(); e.g. if you blindly
+free the on-disk inode, you may end up doing that while ->write_inode() is writing
+to it.

arch/alpha/kernel/osf_sys.c

@@ -234,11 +234,11 @@ linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_st
 }
 
 static int
-do_osf_statfs(struct dentry * dentry, struct osf_statfs __user *buffer,
+do_osf_statfs(struct path *path, struct osf_statfs __user *buffer,
 	      unsigned long bufsiz)
 {
 	struct kstatfs linux_stat;
-	int error = vfs_statfs(dentry, &linux_stat);
+	int error = vfs_statfs(path, &linux_stat);
 	if (!error)
 		error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
 	return error;	
@@ -252,7 +252,7 @@ SYSCALL_DEFINE3(osf_statfs, char __user *, pathname,
 
 	retval = user_path(pathname, &path);
 	if (!retval) {
-		retval = do_osf_statfs(path.dentry, buffer, bufsiz);
+		retval = do_osf_statfs(&path buffer, bufsiz);
 		path_put(&path);
 	}
 	return retval;
@@ -267,7 +267,7 @@ SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd,
 	retval = -EBADF;
 	file = fget(fd);
 	if (file) {
-		retval = do_osf_statfs(file->f_path.dentry, buffer, bufsiz);
+		retval = do_osf_statfs(&file->f_path, buffer, bufsiz);
 		fput(file);
 	}
 	return retval;

arch/mips/include/asm/statfs.h

@@ -33,7 +33,8 @@ struct statfs {
 	/* Linux specials */
 	__kernel_fsid_t	f_fsid;
 	long		f_namelen;
-	long		f_spare[6];
+	long		f_flags;
+	long		f_spare[5];
 };
 
 #if (_MIPS_SIM == _MIPS_SIM_ABI32) || (_MIPS_SIM == _MIPS_SIM_NABI32)
@@ -53,7 +54,8 @@ struct statfs64 {
 	__u64	f_bavail;
 	__kernel_fsid_t f_fsid;
 	__u32	f_namelen;
-	__u32	f_spare[6];
+	__u32	f_flags;
+	__u32	f_spare[5];
 };
 
 #endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
@@ -73,7 +75,8 @@ struct statfs64 {			/* Same as struct statfs */
 	/* Linux specials */
 	__kernel_fsid_t	f_fsid;
 	long		f_namelen;
-	long		f_spare[6];
+	long		f_flags;
+	long		f_spare[5];
 };
 
 struct compat_statfs64 {
@@ -88,7 +91,8 @@ struct compat_statfs64 {
 	__u64	f_bavail;
 	__kernel_fsid_t f_fsid;
 	__u32	f_namelen;
-	__u32	f_spare[6];
+	__u32	f_flags;
+	__u32	f_spare[5];
 };
 
 #endif /* _MIPS_SIM == _MIPS_SIM_ABI64 */

arch/parisc/hpux/sys_hpux.c

@@ -145,7 +145,7 @@ static int hpux_ustat(dev_t dev, struct hpux_ustat __user *ubuf)
 	s = user_get_super(dev);
 	if (s == NULL)
 		goto out;
-	err = vfs_statfs(s->s_root, &sbuf);
+	err = statfs_by_dentry(s->s_root, &sbuf);
 	drop_super(s);
 	if (err)
 		goto out;
@@ -186,12 +186,12 @@ struct hpux_statfs {
      int16_t f_pad;
 };
 
-static int vfs_statfs_hpux(struct dentry *dentry, struct hpux_statfs *buf)
+static int do_statfs_hpux(struct path *path, struct hpux_statfs *buf)
 {
 	struct kstatfs st;
 	int retval;
 	
-	retval = vfs_statfs(dentry, &st);
+	retval = vfs_statfs(path, &st);
 	if (retval)
 		return retval;
 
@@ -219,7 +219,7 @@ asmlinkage long hpux_statfs(const char __user *pathname,
 	error = user_path(pathname, &path);
 	if (!error) {
 		struct hpux_statfs tmp;
-		error = vfs_statfs_hpux(path.dentry, &tmp);
+		error = do_statfs_hpux(&path, &tmp);
 		if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
 			error = -EFAULT;
 		path_put(&path);
@@ -237,7 +237,7 @@ asmlinkage long hpux_fstatfs(unsigned int fd, struct hpux_statfs __user * buf)
 	file = fget(fd);
 	if (!file)
 		goto out;
-	error = vfs_statfs_hpux(file->f_path.dentry, &tmp);
+	error = do_statfs_hpux(&file->f_path, &tmp);
 	if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
 		error = -EFAULT;
 	fput(file);

arch/powerpc/platforms/cell/spufs/inode.c

@@ -110,7 +110,9 @@ spufs_setattr(struct dentry *dentry, struct iattr *attr)
 	if ((attr->ia_valid & ATTR_SIZE) &&
 	    (attr->ia_size != inode->i_size))
 		return -EINVAL;
-	return inode_setattr(inode, attr);
+	setattr_copy(inode, attr);
+	mark_inode_dirty(inode);
+	return 0;
 }
 
 
@@ -141,15 +143,14 @@ out:
 }
 
 static void
-spufs_delete_inode(struct inode *inode)
+spufs_evict_inode(struct inode *inode)
 {
 	struct spufs_inode_info *ei = SPUFS_I(inode);
-
+	end_writeback(inode);
 	if (ei->i_ctx)
 		put_spu_context(ei->i_ctx);
 	if (ei->i_gang)
 		put_spu_gang(ei->i_gang);
-	clear_inode(inode);
 }
 
 static void spufs_prune_dir(struct dentry *dir)
@@ -777,8 +778,7 @@ spufs_fill_super(struct super_block *sb, void *data, int silent)
 		.alloc_inode = spufs_alloc_inode,
 		.destroy_inode = spufs_destroy_inode,
 		.statfs = simple_statfs,
-		.delete_inode = spufs_delete_inode,
-		.drop_inode = generic_delete_inode,
+		.evict_inode = spufs_evict_inode,
 		.show_options = generic_show_options,
 	};
 

arch/s390/hypfs/inode.c

@@ -117,10 +117,10 @@ static struct inode *hypfs_make_inode(struct super_block *sb, int mode)
 	return ret;
 }
 
-static void hypfs_drop_inode(struct inode *inode)
+static void hypfs_evict_inode(struct inode *inode)
 {
+	end_writeback(inode);
 	kfree(inode->i_private);
-	generic_delete_inode(inode);
 }
 
 static int hypfs_open(struct inode *inode, struct file *filp)
@@ -460,7 +460,7 @@ static struct file_system_type hypfs_type = {
 
 static const struct super_operations hypfs_s_ops = {
 	.statfs		= simple_statfs,
-	.drop_inode	= hypfs_drop_inode,
+	.evict_inode	= hypfs_evict_inode,
 	.show_options	= hypfs_show_options,
 };
 

arch/s390/include/asm/statfs.h

@@ -33,7 +33,8 @@ struct statfs {
 	__kernel_fsid_t f_fsid;
 	int  f_namelen;
 	int  f_frsize;
-	int  f_spare[5];
+	int  f_flags;
+	int  f_spare[4];
 };
 
 struct statfs64 {
@@ -47,7 +48,8 @@ struct statfs64 {
 	__kernel_fsid_t f_fsid;
 	int  f_namelen;
 	int  f_frsize;
-	int  f_spare[5];
+	int  f_flags;
+	int  f_spare[4];
 };
 
 struct compat_statfs64 {
@@ -61,7 +63,8 @@ struct compat_statfs64 {
 	__kernel_fsid_t f_fsid;
 	__u32 f_namelen;
 	__u32 f_frsize;
-	__u32 f_spare[5];
+	__u32 f_flags;
+	__u32 f_spare[4];
 };
 
 #endif /* __s390x__ */

arch/um/include/shared/os.h

@@ -161,6 +161,9 @@ extern int os_stat_filesystem(char *path, long *bsize_out,
 			      long *spare_out);
 extern int os_change_dir(char *dir);
 extern int os_fchange_dir(int fd);
+extern unsigned os_major(unsigned long long dev);
+extern unsigned os_minor(unsigned long long dev);
+extern unsigned long long os_makedev(unsigned major, unsigned minor);
 
 /* start_up.c */
 extern void os_early_checks(void);

arch/um/kernel/ksyms.c

@@ -58,6 +58,9 @@ EXPORT_SYMBOL(os_accept_connection);
 EXPORT_SYMBOL(os_rcv_fd);
 EXPORT_SYMBOL(run_helper);
 EXPORT_SYMBOL(start_thread);
+EXPORT_SYMBOL(os_major);
+EXPORT_SYMBOL(os_minor);
+EXPORT_SYMBOL(os_makedev);
 
 EXPORT_SYMBOL(add_sigio_fd);
 EXPORT_SYMBOL(ignore_sigio_fd);

arch/um/os-Linux/file.c

@@ -561,3 +561,18 @@ int os_lock_file(int fd, int excl)
  out:
 	return err;
 }
+
+unsigned os_major(unsigned long long dev)
+{
+	return major(dev);
+}
+
+unsigned os_minor(unsigned long long dev)
+{
+	return minor(dev);
+}
+
+unsigned long long os_makedev(unsigned major, unsigned minor)
+{
+	return makedev(major, minor);
+}

arch/um/os-Linux/user_syms.c

@@ -103,6 +103,10 @@ EXPORT_SYMBOL_PROTO(getuid);
 EXPORT_SYMBOL_PROTO(fsync);
 EXPORT_SYMBOL_PROTO(fdatasync);
 
+EXPORT_SYMBOL_PROTO(lstat64);
+EXPORT_SYMBOL_PROTO(fstat64);
+EXPORT_SYMBOL_PROTO(mknod);
+
 /* Export symbols used by GCC for the stack protector. */
 extern void __stack_smash_handler(void *) __attribute__((weak));
 EXPORT_SYMBOL(__stack_smash_handler);

drivers/staging/pohmelfs/inode.c

@@ -968,12 +968,18 @@ int pohmelfs_setattr_raw(struct inode *inode, struct iattr *attr)
 		goto err_out_exit;
 	}
 
-	err = inode_setattr(inode, attr);
-	if (err) {
-		dprintk("%s: ino: %llu, failed to set the attributes.\n", __func__, POHMELFS_I(inode)->ino);
-		goto err_out_exit;
+	if ((attr->ia_valid & ATTR_SIZE) &&
+	    attr->ia_size != i_size_read(inode)) {
+		err = vmtruncate(inode, attr->ia_size);
+		if (err) {
+			dprintk("%s: ino: %llu, failed to set the attributes.\n", __func__, POHMELFS_I(inode)->ino);
+			goto err_out_exit;
+		}
 	}
 
+	setattr_copy(inode, attr);
+	mark_inode_dirty(inode);
+
 	dprintk("%s: ino: %llu, mode: %o -> %o, uid: %u -> %u, gid: %u -> %u, size: %llu -> %llu.\n",
 			__func__, POHMELFS_I(inode)->ino, inode->i_mode, attr->ia_mode,
 			inode->i_uid, attr->ia_uid, inode->i_gid, attr->ia_gid, inode->i_size, attr->ia_size);
@@ -1217,7 +1223,7 @@ void pohmelfs_fill_inode(struct inode *inode, struct netfs_inode_info *info)
 	}
 }
 
-static void pohmelfs_drop_inode(struct inode *inode)
+static int pohmelfs_drop_inode(struct inode *inode)
 {
 	struct pohmelfs_sb *psb = POHMELFS_SB(inode->i_sb);
 	struct pohmelfs_inode *pi = POHMELFS_I(inode);
@@ -1226,7 +1232,7 @@ static void pohmelfs_drop_inode(struct inode *inode)
 	list_del_init(&pi->inode_entry);
 	spin_unlock(&psb->ino_lock);
 
-	generic_drop_inode(inode);
+	return generic_drop_inode(inode);
 }
 
 static struct pohmelfs_inode *pohmelfs_get_inode_from_list(struct pohmelfs_sb *psb,

fs/9p/v9fs_vfs.h

@@ -52,7 +52,7 @@ void v9fs_destroy_inode(struct inode *inode);
 #endif
 
 struct inode *v9fs_get_inode(struct super_block *sb, int mode);
-void v9fs_clear_inode(struct inode *inode);
+void v9fs_evict_inode(struct inode *inode);
 ino_t v9fs_qid2ino(struct p9_qid *qid);
 void v9fs_stat2inode(struct p9_wstat *, struct inode *, struct super_block *);
 void v9fs_stat2inode_dotl(struct p9_stat_dotl *, struct inode *);

fs/9p/vfs_inode.c

@@ -430,8 +430,10 @@ error:
  * @inode: inode to release
  *
  */
-void v9fs_clear_inode(struct inode *inode)
+void v9fs_evict_inode(struct inode *inode)
 {
+	truncate_inode_pages(inode->i_mapping, 0);
+	end_writeback(inode);
 	filemap_fdatawrite(inode->i_mapping);
 
 #ifdef CONFIG_9P_FSCACHE
@@ -1209,10 +1211,19 @@ static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
 	}
 
 	retval = p9_client_wstat(fid, &wstat);
-	if (retval >= 0)
-		retval = inode_setattr(dentry->d_inode, iattr);
+	if (retval < 0)
+		return retval;
 
-	return retval;
+	if ((iattr->ia_valid & ATTR_SIZE) &&
+	    iattr->ia_size != i_size_read(dentry->d_inode)) {
+		retval = vmtruncate(dentry->d_inode, iattr->ia_size);
+		if (retval)
+			return retval;
+	}
+
+	setattr_copy(dentry->d_inode, iattr);
+	mark_inode_dirty(dentry->d_inode);
+	return 0;
 }
 
 /**

fs/9p/vfs_super.c

@@ -266,7 +266,7 @@ static const struct super_operations v9fs_super_ops = {
 	.destroy_inode = v9fs_destroy_inode,
 #endif
 	.statfs = simple_statfs,
-	.clear_inode = v9fs_clear_inode,
+	.evict_inode = v9fs_evict_inode,
 	.show_options = generic_show_options,
 	.umount_begin = v9fs_umount_begin,
 };
@@ -277,7 +277,7 @@ static const struct super_operations v9fs_super_ops_dotl = {
 	.destroy_inode = v9fs_destroy_inode,
 #endif
 	.statfs = v9fs_statfs,
-	.clear_inode = v9fs_clear_inode,
+	.evict_inode = v9fs_evict_inode,
 	.show_options = generic_show_options,
 	.umount_begin = v9fs_umount_begin,
 };

fs/adfs/inode.c

@@ -50,10 +50,19 @@ static int adfs_write_begin(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned flags,
 			struct page **pagep, void **fsdata)
 {
+	int ret;
+
 	*pagep = NULL;
-	return cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+	ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
 				adfs_get_block,
 				&ADFS_I(mapping->host)->mmu_private);
+	if (unlikely(ret)) {
+		loff_t isize = mapping->host->i_size;
+		if (pos + len > isize)
+			vmtruncate(mapping->host, isize);
+	}
+
+	return ret;
 }
 
 static sector_t _adfs_bmap(struct address_space *mapping, sector_t block)
@@ -324,10 +333,7 @@ adfs_notify_change(struct dentry *dentry, struct iattr *attr)
 
 	/* XXX: this is missing some actual on-disk truncation.. */
 	if (ia_valid & ATTR_SIZE)
-		error = simple_setsize(inode, attr->ia_size);
-
-	if (error)
-		goto out;
+		truncate_setsize(inode, attr->ia_size);
 
 	if (ia_valid & ATTR_MTIME) {
 		inode->i_mtime = attr->ia_mtime;

fs/affs/affs.h

@@ -171,8 +171,7 @@ extern int	affs_rename(struct inode *old_dir, struct dentry *old_dentry,
 extern unsigned long		 affs_parent_ino(struct inode *dir);
 extern struct inode		*affs_new_inode(struct inode *dir);
 extern int			 affs_notify_change(struct dentry *dentry, struct iattr *attr);
-extern void			 affs_delete_inode(struct inode *inode);
-extern void			 affs_clear_inode(struct inode *inode);
+extern void			 affs_evict_inode(struct inode *inode);
 extern struct inode		*affs_iget(struct super_block *sb,
 					unsigned long ino);
 extern int			 affs_write_inode(struct inode *inode,

fs/affs/file.c

@@ -406,10 +406,19 @@ static int affs_write_begin(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned flags,
 			struct page **pagep, void **fsdata)
 {
+	int ret;
+
 	*pagep = NULL;
-	return cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+	ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
 				affs_get_block,
 				&AFFS_I(mapping->host)->mmu_private);
+	if (unlikely(ret)) {
+		loff_t isize = mapping->host->i_size;
+		if (pos + len > isize)
+			vmtruncate(mapping->host, isize);
+	}
+
+	return ret;
 }
 
 static sector_t _affs_bmap(struct address_space *mapping, sector_t block)

fs/affs/inode.c

@@ -235,31 +235,36 @@ affs_notify_change(struct dentry *dentry, struct iattr *attr)
 		goto out;
 	}
 
-	error = inode_setattr(inode, attr);
-	if (!error && (attr->ia_valid & ATTR_MODE))
+	if ((attr->ia_valid & ATTR_SIZE) &&
+	    attr->ia_size != i_size_read(inode)) {
+		error = vmtruncate(inode, attr->ia_size);
+		if (error)
+			return error;
+	}
+
+	setattr_copy(inode, attr);
+	mark_inode_dirty(inode);
+
+	if (attr->ia_valid & ATTR_MODE)
 		mode_to_prot(inode);
 out:
 	return error;
 }
 
 void
-affs_delete_inode(struct inode *inode)
-{
-	pr_debug("AFFS: delete_inode(ino=%lu, nlink=%u)\n", inode->i_ino, inode->i_nlink);
-	truncate_inode_pages(&inode->i_data, 0);
-	inode->i_size = 0;
-	affs_truncate(inode);
-	clear_inode(inode);
-	affs_free_block(inode->i_sb, inode->i_ino);
-}
-
-void
-affs_clear_inode(struct inode *inode)
+affs_evict_inode(struct inode *inode)
 {
 	unsigned long cache_page;
+	pr_debug("AFFS: evict_inode(ino=%lu, nlink=%u)\n", inode->i_ino, inode->i_nlink);
+	truncate_inode_pages(&inode->i_data, 0);
 
-	pr_debug("AFFS: clear_inode(ino=%lu, nlink=%u)\n", inode->i_ino, inode->i_nlink);
+	if (!inode->i_nlink) {
+		inode->i_size = 0;
+		affs_truncate(inode);
+	}
 
+	invalidate_inode_buffers(inode);
+	end_writeback(inode);
 	affs_free_prealloc(inode);
 	cache_page = (unsigned long)AFFS_I(inode)->i_lc;
 	if (cache_page) {
@@ -271,6 +276,9 @@ affs_clear_inode(struct inode *inode)
 	affs_brelse(AFFS_I(inode)->i_ext_bh);
 	AFFS_I(inode)->i_ext_last = ~1;
 	AFFS_I(inode)->i_ext_bh = NULL;
+
+	if (!inode->i_nlink)
+		affs_free_block(inode->i_sb, inode->i_ino);
 }
 
 struct inode *

fs/affs/super.c

@@ -26,7 +26,7 @@ static int affs_statfs(struct dentry *dentry, struct kstatfs *buf);
 static int affs_remount (struct super_block *sb, int *flags, char *data);
 
 static void
-affs_commit_super(struct super_block *sb, int clean)
+affs_commit_super(struct super_block *sb, int wait, int clean)
 {
 	struct affs_sb_info *sbi = AFFS_SB(sb);
 	struct buffer_head *bh = sbi->s_root_bh;
@@ -36,6 +36,8 @@ affs_commit_super(struct super_block *sb, int clean)
 	secs_to_datestamp(get_seconds(), &tail->disk_change);
 	affs_fix_checksum(sb, bh);
 	mark_buffer_dirty(bh);
+	if (wait)
+		sync_dirty_buffer(bh);
 }
 
 static void
@@ -46,8 +48,8 @@ affs_put_super(struct super_block *sb)
 
 	lock_kernel();
 
-	if (!(sb->s_flags & MS_RDONLY))
-		affs_commit_super(sb, 1);
+	if (!(sb->s_flags & MS_RDONLY) && sb->s_dirt)
+		affs_commit_super(sb, 1, 1);
 
 	kfree(sbi->s_prefix);
 	affs_free_bitmap(sb);
@@ -61,27 +63,20 @@ affs_put_super(struct super_block *sb)
 static void
 affs_write_super(struct super_block *sb)
 {
-	int clean = 2;
-
 	lock_super(sb);
-	if (!(sb->s_flags & MS_RDONLY)) {
-		//	if (sbi->s_bitmap[i].bm_bh) {
-		//		if (buffer_dirty(sbi->s_bitmap[i].bm_bh)) {
-		//			clean = 0;
-		affs_commit_super(sb, clean);
-		sb->s_dirt = !clean;	/* redo until bitmap synced */
-	} else
-		sb->s_dirt = 0;
+	if (!(sb->s_flags & MS_RDONLY))
+		affs_commit_super(sb, 1, 2);
+	sb->s_dirt = 0;
 	unlock_super(sb);
 
-	pr_debug("AFFS: write_super() at %lu, clean=%d\n", get_seconds(), clean);
+	pr_debug("AFFS: write_super() at %lu, clean=2\n", get_seconds());
 }
 
 static int
 affs_sync_fs(struct super_block *sb, int wait)
 {
 	lock_super(sb);
-	affs_commit_super(sb, 2);
+	affs_commit_super(sb, wait, 2);
 	sb->s_dirt = 0;
 	unlock_super(sb);
 	return 0;
@@ -140,8 +135,7 @@ static const struct super_operations affs_sops = {
 	.alloc_inode	= affs_alloc_inode,
 	.destroy_inode	= affs_destroy_inode,
 	.write_inode	= affs_write_inode,
-	.delete_inode	= affs_delete_inode,
-	.clear_inode	= affs_clear_inode,
+	.evict_inode	= affs_evict_inode,
 	.put_super	= affs_put_super,
 	.write_super	= affs_write_super,
 	.sync_fs	= affs_sync_fs,
@@ -554,9 +548,7 @@ affs_remount(struct super_block *sb, int *flags, char *data)
 		return 0;
 	}
 	if (*flags & MS_RDONLY) {
-		sb->s_dirt = 1;
-		while (sb->s_dirt)
-			affs_write_super(sb);
+		affs_write_super(sb);
 		affs_free_bitmap(sb);
 	} else
 		res = affs_init_bitmap(sb, flags);

fs/afs/inode.c

@@ -316,7 +316,7 @@ int afs_getattr(struct vfsmount *mnt, struct dentry *dentry,
 /*
  * clear an AFS inode
  */
-void afs_clear_inode(struct inode *inode)
+void afs_evict_inode(struct inode *inode)
 {
 	struct afs_permits *permits;
 	struct afs_vnode *vnode;
@@ -335,6 +335,9 @@ void afs_clear_inode(struct inode *inode)
 
 	ASSERTCMP(inode->i_ino, ==, vnode->fid.vnode);
 
+	truncate_inode_pages(&inode->i_data, 0);
+	end_writeback(inode);
+
 	afs_give_up_callback(vnode);
 
 	if (vnode->server) {

fs/afs/internal.h

@@ -565,7 +565,7 @@ extern void afs_zap_data(struct afs_vnode *);
 extern int afs_validate(struct afs_vnode *, struct key *);
 extern int afs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
 extern int afs_setattr(struct dentry *, struct iattr *);
-extern void afs_clear_inode(struct inode *);
+extern void afs_evict_inode(struct inode *);
 
 /*
  * main.c

fs/afs/super.c

@@ -49,7 +49,7 @@ static const struct super_operations afs_super_ops = {
 	.statfs		= afs_statfs,
 	.alloc_inode	= afs_alloc_inode,
 	.destroy_inode	= afs_destroy_inode,
-	.clear_inode	= afs_clear_inode,
+	.evict_inode	= afs_evict_inode,
 	.put_super	= afs_put_super,
 	.show_options	= generic_show_options,
 };

fs/attr.c

@@ -14,35 +14,53 @@
 #include <linux/fcntl.h>
 #include <linux/security.h>
 
-/* Taken over from the old code... */
-
-/* POSIX UID/GID verification for setting inode attributes. */
+/**
+ * inode_change_ok - check if attribute changes to an inode are allowed
+ * @inode:	inode to check
+ * @attr:	attributes to change
+ *
+ * Check if we are allowed to change the attributes contained in @attr
+ * in the given inode.  This includes the normal unix access permission
+ * checks, as well as checks for rlimits and others.
+ *
+ * Should be called as the first thing in ->setattr implementations,
+ * possibly after taking additional locks.
+ */
 int inode_change_ok(const struct inode *inode, struct iattr *attr)
 {
-	int retval = -EPERM;
 	unsigned int ia_valid = attr->ia_valid;
 
+	/*
+	 * First check size constraints.  These can't be overriden using
+	 * ATTR_FORCE.
+	 */
+	if (ia_valid & ATTR_SIZE) {
+		int error = inode_newsize_ok(inode, attr->ia_size);
+		if (error)
+			return error;
+	}
+
 	/* If force is set do it anyway. */
 	if (ia_valid & ATTR_FORCE)
-		goto fine;
+		return 0;
 
 	/* Make sure a caller can chown. */
 	if ((ia_valid & ATTR_UID) &&
 	    (current_fsuid() != inode->i_uid ||
 	     attr->ia_uid != inode->i_uid) && !capable(CAP_CHOWN))
-		goto error;
+		return -EPERM;
 
 	/* Make sure caller can chgrp. */
 	if ((ia_valid & ATTR_GID) &&
 	    (current_fsuid() != inode->i_uid ||
 	    (!in_group_p(attr->ia_gid) && attr->ia_gid != inode->i_gid)) &&
 	    !capable(CAP_CHOWN))
-		goto error;
+		return -EPERM;
 
 	/* Make sure a caller can chmod. */
 	if (ia_valid & ATTR_MODE) {
 		if (!is_owner_or_cap(inode))
-			goto error;
+			return -EPERM;
 		/* Also check the setgid bit! */
 		if (!in_group_p((ia_valid & ATTR_GID) ? attr->ia_gid :
 				inode->i_gid) && !capable(CAP_FSETID))
@@ -52,12 +70,10 @@ int inode_change_ok(const struct inode *inode, struct iattr *attr)
 	/* Check for setting the inode time. */
 	if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)) {
 		if (!is_owner_or_cap(inode))
-			goto error;
+			return -EPERM;
 	}
-fine:
-	retval = 0;
-error:
-	return retval;
+
+	return 0;
 }
 EXPORT_SYMBOL(inode_change_ok);
 
@@ -105,21 +121,21 @@ out_big:
 EXPORT_SYMBOL(inode_newsize_ok);
 
 /**
- * generic_setattr - copy simple metadata updates into the generic inode
+ * setattr_copy - copy simple metadata updates into the generic inode
  * @inode:	the inode to be updated
  * @attr:	the new attributes
  *
- * generic_setattr must be called with i_mutex held.
+ * setattr_copy must be called with i_mutex held.
  *
- * generic_setattr updates the inode's metadata with that specified
+ * setattr_copy updates the inode's metadata with that specified
  * in attr. Noticably missing is inode size update, which is more complex
- * as it requires pagecache updates. See simple_setsize.
+ * as it requires pagecache updates.
  *
  * The inode is not marked as dirty after this operation. The rationale is
  * that for "simple" filesystems, the struct inode is the inode storage.
  * The caller is free to mark the inode dirty afterwards if needed.
  */
-void generic_setattr(struct inode *inode, const struct iattr *attr)
+void setattr_copy(struct inode *inode, const struct iattr *attr)
 {
 	unsigned int ia_valid = attr->ia_valid;
 
@@ -144,32 +160,7 @@ void generic_setattr(struct inode *inode, const struct iattr *attr)
 		inode->i_mode = mode;
 	}
 }
-EXPORT_SYMBOL(generic_setattr);
-
-/*
- * note this function is deprecated, the new truncate sequence should be
- * used instead -- see eg. simple_setsize, generic_setattr.
- */
-int inode_setattr(struct inode *inode, const struct iattr *attr)
-{
-	unsigned int ia_valid = attr->ia_valid;
-
-	if (ia_valid & ATTR_SIZE &&
-	    attr->ia_size != i_size_read(inode)) {
-		int error;
-
-		error = vmtruncate(inode, attr->ia_size);
-		if (error)
-			return error;
-	}
-
-	generic_setattr(inode, attr);
-
-	mark_inode_dirty(inode);
-
-	return 0;
-}
-EXPORT_SYMBOL(inode_setattr);
+EXPORT_SYMBOL(setattr_copy);
 
 int notify_change(struct dentry * dentry, struct iattr * attr)
 {
@@ -237,13 +228,10 @@ int notify_change(struct dentry * dentry, struct iattr * attr)
 	if (ia_valid & ATTR_SIZE)
 		down_write(&dentry->d_inode->i_alloc_sem);
 
-	if (inode->i_op && inode->i_op->setattr) {
+	if (inode->i_op->setattr)
 		error = inode->i_op->setattr(dentry, attr);
-	} else {
-		error = inode_change_ok(inode, attr);
-		if (!error)
-			error = inode_setattr(inode, attr);
-	}
+	else
+		error = simple_setattr(dentry, attr);
 
 	if (ia_valid & ATTR_SIZE)
 		up_write(&dentry->d_inode->i_alloc_sem);

fs/bfs/bfs.h

@@ -17,7 +17,6 @@ struct bfs_sb_info {
 	unsigned long si_lf_eblk;
 	unsigned long si_lasti;
 	unsigned long *si_imap;
-	struct buffer_head *si_sbh;		/* buffer header w/superblock */
 	struct mutex bfs_lock;
 };
 

fs/bfs/file.c

@@ -70,7 +70,6 @@ static int bfs_get_block(struct inode *inode, sector_t block,
 	struct super_block *sb = inode->i_sb;
 	struct bfs_sb_info *info = BFS_SB(sb);
 	struct bfs_inode_info *bi = BFS_I(inode);
-	struct buffer_head *sbh = info->si_sbh;
 
 	phys = bi->i_sblock + block;
 	if (!create) {
@@ -112,7 +111,6 @@ static int bfs_get_block(struct inode *inode, sector_t block,
 		info->si_freeb -= phys - bi->i_eblock;
 		info->si_lf_eblk = bi->i_eblock = phys;
 		mark_inode_dirty(inode);
-		mark_buffer_dirty(sbh);
 		err = 0;
 		goto out;
 	}
@@ -147,7 +145,6 @@ static int bfs_get_block(struct inode *inode, sector_t block,
 	 */
 	info->si_freeb -= bi->i_eblock - bi->i_sblock + 1 - inode->i_blocks;
 	mark_inode_dirty(inode);
-	mark_buffer_dirty(sbh);
 	map_bh(bh_result, sb, phys);
 out:
 	mutex_unlock(&info->bfs_lock);
@@ -168,9 +165,17 @@ static int bfs_write_begin(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned flags,
 			struct page **pagep, void **fsdata)
 {
-	*pagep = NULL;
-	return block_write_begin(file, mapping, pos, len, flags,
-					pagep, fsdata, bfs_get_block);
+	int ret;
+
+	ret = block_write_begin(mapping, pos, len, flags, pagep,
+				bfs_get_block);
+	if (unlikely(ret)) {
+		loff_t isize = mapping->host->i_size;
+		if (pos + len > isize)
+			vmtruncate(mapping->host, isize);
+	}
+
+	return ret;
 }
 
 static sector_t bfs_bmap(struct address_space *mapping, sector_t block)

fs/bfs/inode.c

@@ -31,7 +31,6 @@ MODULE_LICENSE("GPL");
 #define dprintf(x...)
 #endif
 
-static void bfs_write_super(struct super_block *s);
 void dump_imap(const char *prefix, struct super_block *s);
 
 struct inode *bfs_iget(struct super_block *sb, unsigned long ino)
@@ -99,6 +98,24 @@ error:
 	return ERR_PTR(-EIO);
 }
 
+static struct bfs_inode *find_inode(struct super_block *sb, u16 ino, struct buffer_head **p)
+{
+	if ((ino < BFS_ROOT_INO) || (ino > BFS_SB(sb)->si_lasti)) {
+		printf("Bad inode number %s:%08x\n", sb->s_id, ino);
+		return ERR_PTR(-EIO);
+	}
+
+	ino -= BFS_ROOT_INO;
+
+	*p = sb_bread(sb, 1 + ino / BFS_INODES_PER_BLOCK);
+	if (!*p) {
+		printf("Unable to read inode %s:%08x\n", sb->s_id, ino);
+		return ERR_PTR(-EIO);
+	}
+
+	return (struct bfs_inode *)(*p)->b_data +  ino % BFS_INODES_PER_BLOCK;
+}
+
 static int bfs_write_inode(struct inode *inode, struct writeback_control *wbc)
 {
 	struct bfs_sb_info *info = BFS_SB(inode->i_sb);
@@ -106,28 +123,15 @@ static int bfs_write_inode(struct inode *inode, struct writeback_control *wbc)
         unsigned long i_sblock;
 	struct bfs_inode *di;
 	struct buffer_head *bh;
-	int block, off;
 	int err = 0;
 
         dprintf("ino=%08x\n", ino);
 
-	if ((ino < BFS_ROOT_INO) || (ino > BFS_SB(inode->i_sb)->si_lasti)) {
-		printf("Bad inode number %s:%08x\n", inode->i_sb->s_id, ino);
-		return -EIO;
-	}
+	di = find_inode(inode->i_sb, ino, &bh);
+	if (IS_ERR(di))
+		return PTR_ERR(di);
 
 	mutex_lock(&info->bfs_lock);
-	block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
-	bh = sb_bread(inode->i_sb, block);
-	if (!bh) {
-		printf("Unable to read inode %s:%08x\n",
-				inode->i_sb->s_id, ino);
-		mutex_unlock(&info->bfs_lock);
-		return -EIO;
-	}
-
-	off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
-	di = (struct bfs_inode *)bh->b_data + off;
 
 	if (ino == BFS_ROOT_INO)
 		di->i_vtype = cpu_to_le32(BFS_VDIR);
@@ -158,12 +162,11 @@ static int bfs_write_inode(struct inode *inode, struct writeback_control *wbc)
 	return err;
 }
 
-static void bfs_delete_inode(struct inode *inode)
+static void bfs_evict_inode(struct inode *inode)
 {
 	unsigned long ino = inode->i_ino;
 	struct bfs_inode *di;
 	struct buffer_head *bh;
-	int block, off;
 	struct super_block *s = inode->i_sb;
 	struct bfs_sb_info *info = BFS_SB(s);
 	struct bfs_inode_info *bi = BFS_I(inode);
@@ -171,28 +174,19 @@ static void bfs_delete_inode(struct inode *inode)
 	dprintf("ino=%08lx\n", ino);
 
 	truncate_inode_pages(&inode->i_data, 0);
+	invalidate_inode_buffers(inode);
+	end_writeback(inode);
 
-	if ((ino < BFS_ROOT_INO) || (ino > info->si_lasti)) {
-		printf("invalid ino=%08lx\n", ino);
+	if (inode->i_nlink)
 		return;
-	}
-	
-	inode->i_size = 0;
-	inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
-	mutex_lock(&info->bfs_lock);
-	mark_inode_dirty(inode);
 
-	block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
-	bh = sb_bread(s, block);
-	if (!bh) {
-		printf("Unable to read inode %s:%08lx\n",
-					inode->i_sb->s_id, ino);
-		mutex_unlock(&info->bfs_lock);
+	di = find_inode(s, inode->i_ino, &bh);
+	if (IS_ERR(di))
 		return;
-	}
-	off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
-	di = (struct bfs_inode *)bh->b_data + off;
-	memset((void *)di, 0, sizeof(struct bfs_inode));
+
+	mutex_lock(&info->bfs_lock);
+	/* clear on-disk inode */
+	memset(di, 0, sizeof(struct bfs_inode));
 	mark_buffer_dirty(bh);
 	brelse(bh);
 
@@ -209,32 +203,9 @@ static void bfs_delete_inode(struct inode *inode)
 	 * "last block of the last file" even if there is no
 	 * real file there, saves us 1 gap.
 	 */
-	if (info->si_lf_eblk == bi->i_eblock) {
+	if (info->si_lf_eblk == bi->i_eblock)
 		info->si_lf_eblk = bi->i_sblock - 1;
-		mark_buffer_dirty(info->si_sbh);
-	}
 	mutex_unlock(&info->bfs_lock);
-	clear_inode(inode);
-}
-
-static int bfs_sync_fs(struct super_block *sb, int wait)
-{
-	struct bfs_sb_info *info = BFS_SB(sb);
-
-	mutex_lock(&info->bfs_lock);
-	mark_buffer_dirty(info->si_sbh);
-	sb->s_dirt = 0;
-	mutex_unlock(&info->bfs_lock);
-
-	return 0;
-}
-
-static void bfs_write_super(struct super_block *sb)
-{
-	if (!(sb->s_flags & MS_RDONLY))
-		bfs_sync_fs(sb, 1);
-	else
-		sb->s_dirt = 0;
 }
 
 static void bfs_put_super(struct super_block *s)
@@ -246,10 +217,6 @@ static void bfs_put_super(struct super_block *s)
 
 	lock_kernel();
 
-	if (s->s_dirt)
-		bfs_write_super(s);
-
-	brelse(info->si_sbh);
 	mutex_destroy(&info->bfs_lock);
 	kfree(info->si_imap);
 	kfree(info);
@@ -319,10 +286,8 @@ static const struct super_operations bfs_sops = {
 	.alloc_inode	= bfs_alloc_inode,
 	.destroy_inode	= bfs_destroy_inode,
 	.write_inode	= bfs_write_inode,
-	.delete_inode	= bfs_delete_inode,
+	.evict_inode	= bfs_evict_inode,
 	.put_super	= bfs_put_super,
-	.write_super	= bfs_write_super,
-	.sync_fs	= bfs_sync_fs,
 	.statfs		= bfs_statfs,
 };
 
@@ -349,7 +314,7 @@ void dump_imap(const char *prefix, struct super_block *s)
 
 static int bfs_fill_super(struct super_block *s, void *data, int silent)
 {
-	struct buffer_head *bh;
+	struct buffer_head *bh, *sbh;
 	struct bfs_super_block *bfs_sb;
 	struct inode *inode;
 	unsigned i, imap_len;
@@ -365,10 +330,10 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
 
 	sb_set_blocksize(s, BFS_BSIZE);
 
-	info->si_sbh = sb_bread(s, 0);
-	if (!info->si_sbh)
+	sbh = sb_bread(s, 0);
+	if (!sbh)
 		goto out;
-	bfs_sb = (struct bfs_super_block *)info->si_sbh->b_data;
+	bfs_sb = (struct bfs_super_block *)sbh->b_data;
 	if (le32_to_cpu(bfs_sb->s_magic) != BFS_MAGIC) {
 		if (!silent)
 			printf("No BFS filesystem on %s (magic=%08x)\n", 
@@ -472,10 +437,7 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
 			info->si_lf_eblk = eblock;
 	}
 	brelse(bh);
-	if (!(s->s_flags & MS_RDONLY)) {
-		mark_buffer_dirty(info->si_sbh);
-		s->s_dirt = 1;
-	} 
+	brelse(sbh);
 	dump_imap("read_super", s);
 	return 0;
 
@@ -485,7 +447,7 @@ out3:
 out2:
 	kfree(info->si_imap);
 out1:
-	brelse(info->si_sbh);
+	brelse(sbh);
 out:
 	mutex_destroy(&info->bfs_lock);
 	kfree(info);

fs/binfmt_misc.c

@@ -502,8 +502,9 @@ static struct inode *bm_get_inode(struct super_block *sb, int mode)
 	return inode;
 }
 
-static void bm_clear_inode(struct inode *inode)
+static void bm_evict_inode(struct inode *inode)
 {
+	end_writeback(inode);
 	kfree(inode->i_private);
 }
 
@@ -685,7 +686,7 @@ static const struct file_operations bm_status_operations = {
 
 static const struct super_operations s_ops = {
 	.statfs		= simple_statfs,
-	.clear_inode	= bm_clear_inode,
+	.evict_inode	= bm_evict_inode,
 };
 
 static int bm_fill_super(struct super_block * sb, void * data, int silent)

fs/block_dev.c

@@ -172,9 +172,8 @@ blkdev_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
 	struct file *file = iocb->ki_filp;
 	struct inode *inode = file->f_mapping->host;
 
-	return blockdev_direct_IO_no_locking_newtrunc(rw, iocb, inode,
-				I_BDEV(inode), iov, offset, nr_segs,
-				blkdev_get_blocks, NULL);
+	return __blockdev_direct_IO(rw, iocb, inode, I_BDEV(inode), iov, offset,
+				    nr_segs, blkdev_get_blocks, NULL, NULL, 0);
 }
 
 int __sync_blockdev(struct block_device *bdev, int wait)
@@ -309,9 +308,8 @@ static int blkdev_write_begin(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned flags,
 			struct page **pagep, void **fsdata)
 {
-	*pagep = NULL;
-	return block_write_begin_newtrunc(file, mapping, pos, len, flags,
-				pagep, fsdata, blkdev_get_block);
+	return block_write_begin(mapping, pos, len, flags, pagep,
+				 blkdev_get_block);
 }
 
 static int blkdev_write_end(struct file *file, struct address_space *mapping,
@@ -428,10 +426,13 @@ static inline void __bd_forget(struct inode *inode)
 	inode->i_mapping = &inode->i_data;
 }
 
-static void bdev_clear_inode(struct inode *inode)
+static void bdev_evict_inode(struct inode *inode)
 {
 	struct block_device *bdev = &BDEV_I(inode)->bdev;
 	struct list_head *p;
+	truncate_inode_pages(&inode->i_data, 0);
+	invalidate_inode_buffers(inode); /* is it needed here? */
+	end_writeback(inode);
 	spin_lock(&bdev_lock);
 	while ( (p = bdev->bd_inodes.next) != &bdev->bd_inodes ) {
 		__bd_forget(list_entry(p, struct inode, i_devices));
@@ -445,7 +446,7 @@ static const struct super_operations bdev_sops = {
 	.alloc_inode = bdev_alloc_inode,
 	.destroy_inode = bdev_destroy_inode,
 	.drop_inode = generic_delete_inode,
-	.clear_inode = bdev_clear_inode,
+	.evict_inode = bdev_evict_inode,
 };
 
 static int bd_get_sb(struct file_system_type *fs_type,

fs/btrfs/ctree.h

@@ -2389,13 +2389,13 @@ unsigned long btrfs_force_ra(struct address_space *mapping,
 			      pgoff_t offset, pgoff_t last_index);
 int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf);
 int btrfs_readpage(struct file *file, struct page *page);
-void btrfs_delete_inode(struct inode *inode);
+void btrfs_evict_inode(struct inode *inode);
 void btrfs_put_inode(struct inode *inode);
 int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc);
 void btrfs_dirty_inode(struct inode *inode);
 struct inode *btrfs_alloc_inode(struct super_block *sb);
 void btrfs_destroy_inode(struct inode *inode);
-void btrfs_drop_inode(struct inode *inode);
+int btrfs_drop_inode(struct inode *inode);
 int btrfs_init_cachep(void);
 void btrfs_destroy_cachep(void);
 long btrfs_ioctl_trans_end(struct file *file);

fs/btrfs/inode.c

@@ -2938,7 +2938,6 @@ int btrfs_unlink_subvol(struct btrfs_trans_handle *trans,
 	dir->i_mtime = dir->i_ctime = CURRENT_TIME;
 	ret = btrfs_update_inode(trans, root, dir);
 	BUG_ON(ret);
-	dir->i_sb->s_dirt = 1;
 
 	btrfs_free_path(path);
 	return 0;
@@ -3656,17 +3655,19 @@ static int btrfs_setattr(struct dentry *dentry, struct iattr *attr)
 		if (err)
 			return err;
 	}
-	attr->ia_valid &= ~ATTR_SIZE;
 
-	if (attr->ia_valid)
-		err = inode_setattr(inode, attr);
+	if (attr->ia_valid) {
+		setattr_copy(inode, attr);
+		mark_inode_dirty(inode);
+
+		if (attr->ia_valid & ATTR_MODE)
+			err = btrfs_acl_chmod(inode);
+	}
 
-	if (!err && ((attr->ia_valid & ATTR_MODE)))
-		err = btrfs_acl_chmod(inode);
 	return err;
 }
 
-void btrfs_delete_inode(struct inode *inode)
+void btrfs_evict_inode(struct inode *inode)
 {
 	struct btrfs_trans_handle *trans;
 	struct btrfs_root *root = BTRFS_I(inode)->root;
@@ -3674,10 +3675,14 @@ void btrfs_delete_inode(struct inode *inode)
 	int ret;
 
 	truncate_inode_pages(&inode->i_data, 0);
+	if (inode->i_nlink && btrfs_root_refs(&root->root_item) != 0)
+		goto no_delete;
+
 	if (is_bad_inode(inode)) {
 		btrfs_orphan_del(NULL, inode);
 		goto no_delete;
 	}
+	/* do we really want it for ->i_nlink > 0 and zero btrfs_root_refs? */
 	btrfs_wait_ordered_range(inode, 0, (u64)-1);
 
 	if (root->fs_info->log_root_recovering) {
@@ -3727,7 +3732,7 @@ void btrfs_delete_inode(struct inode *inode)
 	btrfs_end_transaction(trans, root);
 	btrfs_btree_balance_dirty(root, nr);
 no_delete:
-	clear_inode(inode);
+	end_writeback(inode);
 	return;
 }
 
@@ -3858,7 +3863,7 @@ again:
 			p = &parent->rb_right;
 		else {
 			WARN_ON(!(entry->vfs_inode.i_state &
-				  (I_WILL_FREE | I_FREEING | I_CLEAR)));
+				  (I_WILL_FREE | I_FREEING)));
 			rb_erase(parent, &root->inode_tree);
 			RB_CLEAR_NODE(parent);
 			spin_unlock(&root->inode_lock);
@@ -3937,7 +3942,7 @@ again:
 			if (atomic_read(&inode->i_count) > 1)
 				d_prune_aliases(inode);
 			/*
-			 * btrfs_drop_inode will remove it from
+			 * btrfs_drop_inode will have it removed from
 			 * the inode cache when its usage count
 			 * hits zero.
 			 */
@@ -6331,13 +6336,14 @@ free:
 	kmem_cache_free(btrfs_inode_cachep, BTRFS_I(inode));
 }
 
-void btrfs_drop_inode(struct inode *inode)
+int btrfs_drop_inode(struct inode *inode)
 {
 	struct btrfs_root *root = BTRFS_I(inode)->root;
-	if (inode->i_nlink > 0 && btrfs_root_refs(&root->root_item) == 0)
-		generic_delete_inode(inode);
+
+	if (btrfs_root_refs(&root->root_item) == 0)
+		return 1;
 	else
-		generic_drop_inode(inode);
+		return generic_drop_inode(inode);
 }
 
 static void init_once(void *foo)

fs/btrfs/super.c

@@ -797,7 +797,7 @@ static int btrfs_unfreeze(struct super_block *sb)
 
 static const struct super_operations btrfs_super_ops = {
 	.drop_inode	= btrfs_drop_inode,
-	.delete_inode	= btrfs_delete_inode,
+	.evict_inode	= btrfs_evict_inode,
 	.put_super	= btrfs_put_super,
 	.sync_fs	= btrfs_sync_fs,
 	.show_options	= btrfs_show_options,

fs/buffer.c

@@ -1833,9 +1833,10 @@ void page_zero_new_buffers(struct page *page, unsigned from, unsigned to)
 }
 EXPORT_SYMBOL(page_zero_new_buffers);
 
-static int __block_prepare_write(struct inode *inode, struct page *page,
-		unsigned from, unsigned to, get_block_t *get_block)
+int block_prepare_write(struct page *page, unsigned from, unsigned to,
+		get_block_t *get_block)
 {
+	struct inode *inode = page->mapping->host;
 	unsigned block_start, block_end;
 	sector_t block;
 	int err = 0;
@@ -1908,10 +1909,13 @@ static int __block_prepare_write(struct inode *inode, struct page *page,
 		if (!buffer_uptodate(*wait_bh))
 			err = -EIO;
 	}
-	if (unlikely(err))
+	if (unlikely(err)) {
 		page_zero_new_buffers(page, from, to);
+		ClearPageUptodate(page);
+	}
 	return err;
 }
+EXPORT_SYMBOL(block_prepare_write);
 
 static int __block_commit_write(struct inode *inode, struct page *page,
 		unsigned from, unsigned to)
@@ -1948,90 +1952,41 @@ static int __block_commit_write(struct inode *inode, struct page *page,
 	return 0;
 }
 
-/*
- * Filesystems implementing the new truncate sequence should use the
- * _newtrunc postfix variant which won't incorrectly call vmtruncate.
- * The filesystem needs to handle block truncation upon failure.
- */
-int block_write_begin_newtrunc(struct file *file, struct address_space *mapping,
-			loff_t pos, unsigned len, unsigned flags,
-			struct page **pagep, void **fsdata,
-			get_block_t *get_block)
+int __block_write_begin(struct page *page, loff_t pos, unsigned len,
+		get_block_t *get_block)
 {
-	struct inode *inode = mapping->host;
-	int status = 0;
-	struct page *page;
-	pgoff_t index;
-	unsigned start, end;
-	int ownpage = 0;
-
-	index = pos >> PAGE_CACHE_SHIFT;
-	start = pos & (PAGE_CACHE_SIZE - 1);
-	end = start + len;
-
-	page = *pagep;
-	if (page == NULL) {
-		ownpage = 1;
-		page = grab_cache_page_write_begin(mapping, index, flags);
-		if (!page) {
-			status = -ENOMEM;
-			goto out;
-		}
-		*pagep = page;
-	} else
-		BUG_ON(!PageLocked(page));
-
-	status = __block_prepare_write(inode, page, start, end, get_block);
-	if (unlikely(status)) {
-		ClearPageUptodate(page);
+	unsigned start = pos & (PAGE_CACHE_SIZE - 1);
 
-		if (ownpage) {
-			unlock_page(page);
-			page_cache_release(page);
-			*pagep = NULL;
-		}
-	}
-
-out:
-	return status;
+	return block_prepare_write(page, start, start + len, get_block);
 }
-EXPORT_SYMBOL(block_write_begin_newtrunc);
+EXPORT_SYMBOL(__block_write_begin);
 
 /*
  * block_write_begin takes care of the basic task of block allocation and
  * bringing partial write blocks uptodate first.
  *
- * If *pagep is not NULL, then block_write_begin uses the locked page
- * at *pagep rather than allocating its own. In this case, the page will
- * not be unlocked or deallocated on failure.
+ * The filesystem needs to handle block truncation upon failure.
  */
-int block_write_begin(struct file *file, struct address_space *mapping,
-			loff_t pos, unsigned len, unsigned flags,
-			struct page **pagep, void **fsdata,
-			get_block_t *get_block)
+int block_write_begin(struct address_space *mapping, loff_t pos, unsigned len,
+		unsigned flags, struct page **pagep, get_block_t *get_block)
 {
-	int ret;
+	pgoff_t index = pos >> PAGE_CACHE_SHIFT;
+	struct page *page;
+	int status;
 
-	ret = block_write_begin_newtrunc(file, mapping, pos, len, flags,
-					pagep, fsdata, get_block);
+	page = grab_cache_page_write_begin(mapping, index, flags);
+	if (!page)
+		return -ENOMEM;
 
-	/*
-	 * prepare_write() may have instantiated a few blocks
-	 * outside i_size.  Trim these off again. Don't need
-	 * i_size_read because we hold i_mutex.
-	 *
-	 * Filesystems which pass down their own page also cannot
-	 * call into vmtruncate here because it would lead to lock
-	 * inversion problems (*pagep is locked). This is a further
-	 * example of where the old truncate sequence is inadequate.
-	 */
-	if (unlikely(ret) && *pagep == NULL) {
-		loff_t isize = mapping->host->i_size;
-		if (pos + len > isize)
-			vmtruncate(mapping->host, isize);
+	status = __block_write_begin(page, pos, len, get_block);
+	if (unlikely(status)) {
+		unlock_page(page);
+		page_cache_release(page);
+		page = NULL;
 	}
 
-	return ret;
+	*pagep = page;
+	return status;
 }
 EXPORT_SYMBOL(block_write_begin);
 
@@ -2351,7 +2306,7 @@ out:
  * For moronic filesystems that do not allow holes in file.
  * We may have to extend the file.
  */
-int cont_write_begin_newtrunc(struct file *file, struct address_space *mapping,
+int cont_write_begin(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned flags,
 			struct page **pagep, void **fsdata,
 			get_block_t *get_block, loff_t *bytes)
@@ -2363,7 +2318,7 @@ int cont_write_begin_newtrunc(struct file *file, struct address_space *mapping,
 
 	err = cont_expand_zero(file, mapping, pos, bytes);
 	if (err)
-		goto out;
+		return err;
 
 	zerofrom = *bytes & ~PAGE_CACHE_MASK;
 	if (pos+len > *bytes && zerofrom & (blocksize-1)) {
@@ -2371,44 +2326,10 @@ int cont_write_begin_newtrunc(struct file *file, struct address_space *mapping,
 		(*bytes)++;
 	}
 
-	*pagep = NULL;
-	err = block_write_begin_newtrunc(file, mapping, pos, len,
-				flags, pagep, fsdata, get_block);
-out:
-	return err;
-}
-EXPORT_SYMBOL(cont_write_begin_newtrunc);
-
-int cont_write_begin(struct file *file, struct address_space *mapping,
-			loff_t pos, unsigned len, unsigned flags,
-			struct page **pagep, void **fsdata,
-			get_block_t *get_block, loff_t *bytes)
-{
-	int ret;
-
-	ret = cont_write_begin_newtrunc(file, mapping, pos, len, flags,
-					pagep, fsdata, get_block, bytes);
-	if (unlikely(ret)) {
-		loff_t isize = mapping->host->i_size;
-		if (pos + len > isize)
-			vmtruncate(mapping->host, isize);
-	}
-
-	return ret;
+	return block_write_begin(mapping, pos, len, flags, pagep, get_block);
 }
 EXPORT_SYMBOL(cont_write_begin);
 
-int block_prepare_write(struct page *page, unsigned from, unsigned to,
-			get_block_t *get_block)
-{
-	struct inode *inode = page->mapping->host;
-	int err = __block_prepare_write(inode, page, from, to, get_block);
-	if (err)
-		ClearPageUptodate(page);
-	return err;
-}
-EXPORT_SYMBOL(block_prepare_write);
-
 int block_commit_write(struct page *page, unsigned from, unsigned to)
 {
 	struct inode *inode = page->mapping->host;
@@ -2510,11 +2431,11 @@ static void attach_nobh_buffers(struct page *page, struct buffer_head *head)
 }
 
 /*
- * Filesystems implementing the new truncate sequence should use the
- * _newtrunc postfix variant which won't incorrectly call vmtruncate.
+ * On entry, the page is fully not uptodate.
+ * On exit the page is fully uptodate in the areas outside (from,to)
  * The filesystem needs to handle block truncation upon failure.
  */
-int nobh_write_begin_newtrunc(struct file *file, struct address_space *mapping,
+int nobh_write_begin(struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned flags,
 			struct page **pagep, void **fsdata,
 			get_block_t *get_block)
@@ -2547,8 +2468,8 @@ int nobh_write_begin_newtrunc(struct file *file, struct address_space *mapping,
 		unlock_page(page);
 		page_cache_release(page);
 		*pagep = NULL;
-		return block_write_begin_newtrunc(file, mapping, pos, len,
-					flags, pagep, fsdata, get_block);
+		return block_write_begin(mapping, pos, len, flags, pagep,
+					 get_block);
 	}
 
 	if (PageMappedToDisk(page))
@@ -2654,35 +2575,6 @@ out_release:
 
 	return ret;
 }
-EXPORT_SYMBOL(nobh_write_begin_newtrunc);
-
-/*
- * On entry, the page is fully not uptodate.
- * On exit the page is fully uptodate in the areas outside (from,to)
- */
-int nobh_write_begin(struct file *file, struct address_space *mapping,
-			loff_t pos, unsigned len, unsigned flags,
-			struct page **pagep, void **fsdata,
-			get_block_t *get_block)
-{
-	int ret;
-
-	ret = nobh_write_begin_newtrunc(file, mapping, pos, len, flags,
-					pagep, fsdata, get_block);
-
-	/*
-	 * prepare_write() may have instantiated a few blocks
-	 * outside i_size.  Trim these off again. Don't need
-	 * i_size_read because we hold i_mutex.
-	 */
-	if (unlikely(ret)) {
-		loff_t isize = mapping->host->i_size;
-		if (pos + len > isize)
-			vmtruncate(mapping->host, isize);
-	}
-
-	return ret;
-}
 EXPORT_SYMBOL(nobh_write_begin);
 
 int nobh_write_end(struct file *file, struct address_space *mapping,

fs/cachefiles/bind.c

@@ -146,7 +146,7 @@ static int cachefiles_daemon_add_cache(struct cachefiles_cache *cache)
 		goto error_unsupported;
 
 	/* get the cache size and blocksize */
-	ret = vfs_statfs(root, &stats);
+	ret = vfs_statfs(&path, &stats);
 	if (ret < 0)
 		goto error_unsupported;
 

fs/cachefiles/daemon.c

@@ -683,6 +683,10 @@ int cachefiles_has_space(struct cachefiles_cache *cache,
 			 unsigned fnr, unsigned bnr)
 {
 	struct kstatfs stats;
+	struct path path = {
+		.mnt	= cache->mnt,
+		.dentry	= cache->mnt->mnt_root,
+	};
 	int ret;
 
 	//_enter("{%llu,%llu,%llu,%llu,%llu,%llu},%u,%u",
@@ -697,7 +701,7 @@ int cachefiles_has_space(struct cachefiles_cache *cache,
 	/* find out how many pages of blockdev are available */
 	memset(&stats, 0, sizeof(stats));
 
-	ret = vfs_statfs(cache->mnt->mnt_root, &stats);
+	ret = vfs_statfs(&path, &stats);
 	if (ret < 0) {
 		if (ret == -EIO)
 			cachefiles_io_error(cache, "statfs failed");

fs/cifs/cifsfs.c

@@ -329,8 +329,10 @@ cifs_destroy_inode(struct inode *inode)
 }
 
 static void
-cifs_clear_inode(struct inode *inode)
+cifs_evict_inode(struct inode *inode)
 {
+	truncate_inode_pages(&inode->i_data, 0);
+	end_writeback(inode);
 	cifs_fscache_release_inode_cookie(inode);
 }
 
@@ -479,14 +481,13 @@ static int cifs_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-void cifs_drop_inode(struct inode *inode)
+static int cifs_drop_inode(struct inode *inode)
 {
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 
-	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
-		return generic_drop_inode(inode);
-
-	return generic_delete_inode(inode);
+	/* no serverino => unconditional eviction */
+	return !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) ||
+		generic_drop_inode(inode);
 }
 
 static const struct super_operations cifs_super_ops = {
@@ -495,7 +496,7 @@ static const struct super_operations cifs_super_ops = {
 	.alloc_inode = cifs_alloc_inode,
 	.destroy_inode = cifs_destroy_inode,
 	.drop_inode	= cifs_drop_inode,
-	.clear_inode	= cifs_clear_inode,
+	.evict_inode	= cifs_evict_inode,
 /*	.delete_inode	= cifs_delete_inode,  */  /* Do not need above
 	function unless later we add lazy close of inodes or unless the
 	kernel forgets to call us with the same number of releases (closes)

fs/cifs/inode.c

@@ -1698,26 +1698,16 @@ static int cifs_truncate_page(struct address_space *mapping, loff_t from)
 	return rc;
 }
 
-static int cifs_vmtruncate(struct inode *inode, loff_t offset)
+static void cifs_setsize(struct inode *inode, loff_t offset)
 {
 	loff_t oldsize;
-	int err;
 
 	spin_lock(&inode->i_lock);
-	err = inode_newsize_ok(inode, offset);
-	if (err) {
-		spin_unlock(&inode->i_lock);
-		goto out;
-	}
-
 	oldsize = inode->i_size;
 	i_size_write(inode, offset);
 	spin_unlock(&inode->i_lock);
+
 	truncate_pagecache(inode, oldsize, offset);
-	if (inode->i_op->truncate)
-		inode->i_op->truncate(inode);
-out:
-	return err;
 }
 
 static int
@@ -1790,7 +1780,7 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
 
 	if (rc == 0) {
 		cifsInode->server_eof = attrs->ia_size;
-		rc = cifs_vmtruncate(inode, attrs->ia_size);
+		cifs_setsize(inode, attrs->ia_size);
 		cifs_truncate_page(inode->i_mapping, inode->i_size);
 	}
 
@@ -1815,14 +1805,12 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
 
 	xid = GetXid();
 
-	if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
-		/* check if we have permission to change attrs */
-		rc = inode_change_ok(inode, attrs);
-		if (rc < 0)
-			goto out;
-		else
-			rc = 0;
-	}
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
+		attrs->ia_valid |= ATTR_FORCE;
+
+	rc = inode_change_ok(inode, attrs);
+	if (rc < 0)
+		goto out;
 
 	full_path = build_path_from_dentry(direntry);
 	if (full_path == NULL) {
@@ -1908,18 +1896,24 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
 					CIFS_MOUNT_MAP_SPECIAL_CHR);
 	}
 
-	if (!rc) {
-		rc = inode_setattr(inode, attrs);
+	if (rc)
+		goto out;
 
-		/* force revalidate when any of these times are set since some
-		   of the fs types (eg ext3, fat) do not have fine enough
-		   time granularity to match protocol, and we do not have a
-		   a way (yet) to query the server fs's time granularity (and
-		   whether it rounds times down).
-		*/
-		if (!rc && (attrs->ia_valid & (ATTR_MTIME | ATTR_CTIME)))
-			cifsInode->time = 0;
-	}
+	if ((attrs->ia_valid & ATTR_SIZE) &&
+	    attrs->ia_size != i_size_read(inode))
+		truncate_setsize(inode, attrs->ia_size);
+
+	setattr_copy(inode, attrs);
+	mark_inode_dirty(inode);
+
+	/* force revalidate when any of these times are set since some
+	   of the fs types (eg ext3, fat) do not have fine enough
+	   time granularity to match protocol, and we do not have a
+	   a way (yet) to query the server fs's time granularity (and
+	   whether it rounds times down).
+	*/
+	if (attrs->ia_valid & (ATTR_MTIME | ATTR_CTIME))
+		cifsInode->time = 0;
 out:
 	kfree(args);
 	kfree(full_path);
@@ -1944,14 +1938,13 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
 	cFYI(1, "setattr on file %s attrs->iavalid 0x%x",
 		 direntry->d_name.name, attrs->ia_valid);
 
-	if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
-		/* check if we have permission to change attrs */
-		rc = inode_change_ok(inode, attrs);
-		if (rc < 0) {
-			FreeXid(xid);
-			return rc;
-		} else
-			rc = 0;
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
+		attrs->ia_valid |= ATTR_FORCE;
+
+	rc = inode_change_ok(inode, attrs);
+	if (rc < 0) {
+		FreeXid(xid);
+		return rc;
 	}
 
 	full_path = build_path_from_dentry(direntry);
@@ -2059,8 +2052,17 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
 
 	/* do not need local check to inode_check_ok since the server does
 	   that */
-	if (!rc)
-		rc = inode_setattr(inode, attrs);
+	if (rc)
+		goto cifs_setattr_exit;
+
+	if ((attrs->ia_valid & ATTR_SIZE) &&
+	    attrs->ia_size != i_size_read(inode))
+		truncate_setsize(inode, attrs->ia_size);
+
+	setattr_copy(inode, attrs);
+	mark_inode_dirty(inode);
+	return 0;
+
 cifs_setattr_exit:
 	kfree(full_path);
 	FreeXid(xid);

fs/coda/inode.c

@@ -35,7 +35,7 @@
 #include "coda_int.h"
 
 /* VFS super_block ops */
-static void coda_clear_inode(struct inode *);
+static void coda_evict_inode(struct inode *);
 static void coda_put_super(struct super_block *);
 static int coda_statfs(struct dentry *dentry, struct kstatfs *buf);
 
@@ -93,7 +93,7 @@ static const struct super_operations coda_super_operations =
 {
 	.alloc_inode	= coda_alloc_inode,
 	.destroy_inode	= coda_destroy_inode,
-	.clear_inode	= coda_clear_inode,
+	.evict_inode	= coda_evict_inode,
 	.put_super	= coda_put_super,
 	.statfs		= coda_statfs,
 	.remount_fs	= coda_remount,
@@ -224,8 +224,10 @@ static void coda_put_super(struct super_block *sb)
 	printk("Coda: Bye bye.\n");
 }
 
-static void coda_clear_inode(struct inode *inode)
+static void coda_evict_inode(struct inode *inode)
 {
+	truncate_inode_pages(&inode->i_data, 0);
+	end_writeback(inode);
 	coda_cache_clear_inode(inode);
 }
 

fs/compat.c

@@ -267,7 +267,7 @@ asmlinkage long compat_sys_statfs(const char __user *pathname, struct compat_sta
 	error = user_path(pathname, &path);
 	if (!error) {
 		struct kstatfs tmp;
-		error = vfs_statfs(path.dentry, &tmp);
+		error = vfs_statfs(&path, &tmp);
 		if (!error)
 			error = put_compat_statfs(buf, &tmp);
 		path_put(&path);
@@ -285,7 +285,7 @@ asmlinkage long compat_sys_fstatfs(unsigned int fd, struct compat_statfs __user
 	file = fget(fd);
 	if (!file)
 		goto out;
-	error = vfs_statfs(file->f_path.dentry, &tmp);
+	error = vfs_statfs(&file->f_path, &tmp);
 	if (!error)
 		error = put_compat_statfs(buf, &tmp);
 	fput(file);
@@ -335,7 +335,7 @@ asmlinkage long compat_sys_statfs64(const char __user *pathname, compat_size_t s
 	error = user_path(pathname, &path);
 	if (!error) {
 		struct kstatfs tmp;
-		error = vfs_statfs(path.dentry, &tmp);
+		error = vfs_statfs(&path, &tmp);
 		if (!error)
 			error = put_compat_statfs64(buf, &tmp);
 		path_put(&path);
@@ -356,7 +356,7 @@ asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, struct c
 	file = fget(fd);
 	if (!file)
 		goto out;
-	error = vfs_statfs(file->f_path.dentry, &tmp);
+	error = vfs_statfs(&file->f_path, &tmp);
 	if (!error)
 		error = put_compat_statfs64(buf, &tmp);
 	fput(file);
@@ -379,7 +379,7 @@ asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u)
 	sb = user_get_super(new_decode_dev(dev));
 	if (!sb)
 		return -EINVAL;
-	err = vfs_statfs(sb->s_root, &sbuf);
+	err = statfs_by_dentry(sb->s_root, &sbuf);
 	drop_super(sb);
 	if (err)
 		return err;

fs/cramfs/inode.c

@@ -39,66 +39,55 @@ static DEFINE_MUTEX(read_mutex);
 #define CRAMINO(x)	(((x)->offset && (x)->size)?(x)->offset<<2:1)
 #define OFFSET(x)	((x)->i_ino)
 
-
-static int cramfs_iget5_test(struct inode *inode, void *opaque)
-{
-	struct cramfs_inode *cramfs_inode = opaque;
-	return inode->i_ino == CRAMINO(cramfs_inode) && inode->i_ino != 1;
-}
-
-static int cramfs_iget5_set(struct inode *inode, void *opaque)
+static void setup_inode(struct inode *inode, struct cramfs_inode * cramfs_inode)
 {
-	struct cramfs_inode *cramfs_inode = opaque;
-	inode->i_ino = CRAMINO(cramfs_inode);
-	return 0;
+	static struct timespec zerotime;
+	inode->i_mode = cramfs_inode->mode;
+	inode->i_uid = cramfs_inode->uid;
+	inode->i_size = cramfs_inode->size;
+	inode->i_blocks = (cramfs_inode->size - 1) / 512 + 1;
+	inode->i_gid = cramfs_inode->gid;
+	/* Struct copy intentional */
+	inode->i_mtime = inode->i_atime = inode->i_ctime = zerotime;
+	/* inode->i_nlink is left 1 - arguably wrong for directories,
+	   but it's the best we can do without reading the directory
+	   contents.  1 yields the right result in GNU find, even
+	   without -noleaf option. */
+	if (S_ISREG(inode->i_mode)) {
+		inode->i_fop = &generic_ro_fops;
+		inode->i_data.a_ops = &cramfs_aops;
+	} else if (S_ISDIR(inode->i_mode)) {
+		inode->i_op = &cramfs_dir_inode_operations;
+		inode->i_fop = &cramfs_directory_operations;
+	} else if (S_ISLNK(inode->i_mode)) {
+		inode->i_op = &page_symlink_inode_operations;
+		inode->i_data.a_ops = &cramfs_aops;
+	} else {
+		init_special_inode(inode, inode->i_mode,
+			old_decode_dev(cramfs_inode->size));
+	}
 }
 
 static struct inode *get_cramfs_inode(struct super_block *sb,
 				struct cramfs_inode * cramfs_inode)
 {
-	struct inode *inode = iget5_locked(sb, CRAMINO(cramfs_inode),
-					    cramfs_iget5_test, cramfs_iget5_set,
-					    cramfs_inode);
-	static struct timespec zerotime;
-
-	if (inode && (inode->i_state & I_NEW)) {
-		inode->i_mode = cramfs_inode->mode;
-		inode->i_uid = cramfs_inode->uid;
-		inode->i_size = cramfs_inode->size;
-		inode->i_blocks = (cramfs_inode->size - 1) / 512 + 1;
-		inode->i_gid = cramfs_inode->gid;
-		/* Struct copy intentional */
-		inode->i_mtime = inode->i_atime = inode->i_ctime = zerotime;
-		/* inode->i_nlink is left 1 - arguably wrong for directories,
-		   but it's the best we can do without reading the directory
-		   contents.  1 yields the right result in GNU find, even
-		   without -noleaf option. */
-		if (S_ISREG(inode->i_mode)) {
-			inode->i_fop = &generic_ro_fops;
-			inode->i_data.a_ops = &cramfs_aops;
-		} else if (S_ISDIR(inode->i_mode)) {
-			inode->i_op = &cramfs_dir_inode_operations;
-			inode->i_fop = &cramfs_directory_operations;
-		} else if (S_ISLNK(inode->i_mode)) {
-			inode->i_op = &page_symlink_inode_operations;
-			inode->i_data.a_ops = &cramfs_aops;
-		} else {
-			init_special_inode(inode, inode->i_mode,
-				old_decode_dev(cramfs_inode->size));
+	struct inode *inode;
+	if (CRAMINO(cramfs_inode) == 1) {
+		inode = new_inode(sb);
+		if (inode) {
+			inode->i_ino = 1;
+			setup_inode(inode, cramfs_inode);
+		}
+	} else {
+		inode = iget_locked(sb, CRAMINO(cramfs_inode));
+		if (inode) {
+			setup_inode(inode, cramfs_inode);
+			unlock_new_inode(inode);
 		}
-		unlock_new_inode(inode);
 	}
 	return inode;
 }
 
-static void cramfs_drop_inode(struct inode *inode)
-{
-	if (inode->i_ino == 1)
-		generic_delete_inode(inode);
-	else
-		generic_drop_inode(inode);
-}
-
 /*
  * We have our own block cache: don't fill up the buffer cache
  * with the rom-image, because the way the filesystem is set
@@ -542,7 +531,6 @@ static const struct super_operations cramfs_ops = {
 	.put_super	= cramfs_put_super,
 	.remount_fs	= cramfs_remount,
 	.statfs		= cramfs_statfs,
-	.drop_inode	= cramfs_drop_inode,
 };
 
 static int cramfs_get_sb(struct file_system_type *fs_type,

fs/dcache.c

@@ -536,7 +536,7 @@ restart:
  */
 static void prune_dcache(int count)
 {
-	struct super_block *sb, *n;
+	struct super_block *sb, *p = NULL;
 	int w_count;
 	int unused = dentry_stat.nr_unused;
 	int prune_ratio;
@@ -550,7 +550,7 @@ static void prune_dcache(int count)
 	else
 		prune_ratio = unused / count;
 	spin_lock(&sb_lock);
-	list_for_each_entry_safe(sb, n, &super_blocks, s_list) {
+	list_for_each_entry(sb, &super_blocks, s_list) {
 		if (list_empty(&sb->s_instances))
 			continue;
 		if (sb->s_nr_dentry_unused == 0)
@@ -590,14 +590,16 @@ static void prune_dcache(int count)
 			up_read(&sb->s_umount);
 		}
 		spin_lock(&sb_lock);
-		/* lock was dropped, must reset next */
-		list_safe_reset_next(sb, n, s_list);
+		if (p)
+			__put_super(p);
 		count -= pruned;
-		__put_super(sb);
+		p = sb;
 		/* more work left to do? */
 		if (count <= 0)
 			break;
 	}
+	if (p)
+		__put_super(p);
 	spin_unlock(&sb_lock);
 	spin_unlock(&dcache_lock);
 }
@@ -2049,16 +2051,12 @@ char *dynamic_dname(struct dentry *dentry, char *buffer, int buflen,
 /*
  * Write full pathname from the root of the filesystem into the buffer.
  */
-char *dentry_path(struct dentry *dentry, char *buf, int buflen)
+char *__dentry_path(struct dentry *dentry, char *buf, int buflen)
 {
 	char *end = buf + buflen;
 	char *retval;
 
-	spin_lock(&dcache_lock);
 	prepend(&end, &buflen, "\0", 1);
-	if (d_unlinked(dentry) &&
-		(prepend(&end, &buflen, "//deleted", 9) != 0))
-			goto Elong;
 	if (buflen < 1)
 		goto Elong;
 	/* Get '/' right */
@@ -2076,7 +2074,28 @@ char *dentry_path(struct dentry *dentry, char *buf, int buflen)
 		retval = end;
 		dentry = parent;
 	}
+	return retval;
+Elong:
+	return ERR_PTR(-ENAMETOOLONG);
+}
+EXPORT_SYMBOL(__dentry_path);
+
+char *dentry_path(struct dentry *dentry, char *buf, int buflen)
+{
+	char *p = NULL;
+	char *retval;
+
+	spin_lock(&dcache_lock);
+	if (d_unlinked(dentry)) {
+		p = buf + buflen;
+		if (prepend(&p, &buflen, "//deleted", 10) != 0)
+			goto Elong;
+		buflen++;
+	}
+	retval = __dentry_path(dentry, buf, buflen);
 	spin_unlock(&dcache_lock);
+	if (!IS_ERR(retval) && p)
+		*p = '/';	/* restore '/' overriden with '\0' */
 	return retval;
 Elong:
 	spin_unlock(&dcache_lock);

fs/direct-io.c

@@ -1136,8 +1136,27 @@ direct_io_worker(int rw, struct kiocb *iocb, struct inode *inode,
 	return ret;
 }
 
+/*
+ * This is a library function for use by filesystem drivers.
+ *
+ * The locking rules are governed by the flags parameter:
+ *  - if the flags value contains DIO_LOCKING we use a fancy locking
+ *    scheme for dumb filesystems.
+ *    For writes this function is called under i_mutex and returns with
+ *    i_mutex held, for reads, i_mutex is not held on entry, but it is
+ *    taken and dropped again before returning.
+ *    For reads and writes i_alloc_sem is taken in shared mode and released
+ *    on I/O completion (which may happen asynchronously after returning to
+ *    the caller).
+ *
+ *  - if the flags value does NOT contain DIO_LOCKING we don't use any
+ *    internal locking but rather rely on the filesystem to synchronize
+ *    direct I/O reads/writes versus each other and truncate.
+ *    For reads and writes both i_mutex and i_alloc_sem are not held on
+ *    entry and are never taken.
+ */
 ssize_t
-__blockdev_direct_IO_newtrunc(int rw, struct kiocb *iocb, struct inode *inode,
+__blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
 	struct block_device *bdev, const struct iovec *iov, loff_t offset, 
 	unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
 	dio_submit_t submit_io,	int flags)
@@ -1233,57 +1252,4 @@ __blockdev_direct_IO_newtrunc(int rw, struct kiocb *iocb, struct inode *inode,
 out:
 	return retval;
 }
-EXPORT_SYMBOL(__blockdev_direct_IO_newtrunc);
-
-/*
- * This is a library function for use by filesystem drivers.
- *
- * The locking rules are governed by the flags parameter:
- *  - if the flags value contains DIO_LOCKING we use a fancy locking
- *    scheme for dumb filesystems.
- *    For writes this function is called under i_mutex and returns with
- *    i_mutex held, for reads, i_mutex is not held on entry, but it is
- *    taken and dropped again before returning.
- *    For reads and writes i_alloc_sem is taken in shared mode and released
- *    on I/O completion (which may happen asynchronously after returning to
- *    the caller).
- *
- *  - if the flags value does NOT contain DIO_LOCKING we don't use any
- *    internal locking but rather rely on the filesystem to synchronize
- *    direct I/O reads/writes versus each other and truncate.
- *    For reads and writes both i_mutex and i_alloc_sem are not held on
- *    entry and are never taken.
- */
-ssize_t
-__blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
-	struct block_device *bdev, const struct iovec *iov, loff_t offset,
-	unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
-	dio_submit_t submit_io,	int flags)
-{
-	ssize_t retval;
-
-	retval = __blockdev_direct_IO_newtrunc(rw, iocb, inode, bdev, iov,
-			offset, nr_segs, get_block, end_io, submit_io, flags);
-	/*
-	 * In case of error extending write may have instantiated a few
-	 * blocks outside i_size. Trim these off again for DIO_LOCKING.
-	 * NOTE: DIO_NO_LOCK/DIO_OWN_LOCK callers have to handle this in
-	 * their own manner. This is a further example of where the old
-	 * truncate sequence is inadequate.
-	 *
-	 * NOTE: filesystems with their own locking have to handle this
-	 * on their own.
-	 */
-	if (flags & DIO_LOCKING) {
-		if (unlikely((rw & WRITE) && retval < 0)) {
-			loff_t isize = i_size_read(inode);
-			loff_t end = offset + iov_length(iov, nr_segs);
-
-			if (end > isize)
-				vmtruncate(inode, isize);
-		}
-	}
-
-	return retval;
-}
 EXPORT_SYMBOL(__blockdev_direct_IO);

fs/drop_caches.c

@@ -18,7 +18,7 @@ static void drop_pagecache_sb(struct super_block *sb, void *unused)
 
 	spin_lock(&inode_lock);
 	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
-		if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE|I_NEW))
+		if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW))
 			continue;
 		if (inode->i_mapping->nrpages == 0)
 			continue;

fs/ecryptfs/inode.c

@@ -804,10 +804,20 @@ static int truncate_upper(struct dentry *dentry, struct iattr *ia,
 		size_t num_zeros = (PAGE_CACHE_SIZE
 				    - (ia->ia_size & ~PAGE_CACHE_MASK));
 
+
+		/*
+		 * XXX(truncate) this should really happen at the begginning
+		 * of ->setattr.  But the code is too messy to that as part
+		 * of a larger patch.  ecryptfs is also totally missing out
+		 * on the inode_change_ok check at the beginning of
+		 * ->setattr while would include this.
+		 */
+		rc = inode_newsize_ok(inode, ia->ia_size);
+		if (rc)
+			goto out;
+
 		if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
-			rc = simple_setsize(inode, ia->ia_size);
-			if (rc)
-				goto out;
+			truncate_setsize(inode, ia->ia_size);
 			lower_ia->ia_size = ia->ia_size;
 			lower_ia->ia_valid |= ATTR_SIZE;
 			goto out;
@@ -830,7 +840,7 @@ static int truncate_upper(struct dentry *dentry, struct iattr *ia,
 				goto out;
 			}
 		}
-		simple_setsize(inode, ia->ia_size);
+		truncate_setsize(inode, ia->ia_size);
 		rc = ecryptfs_write_inode_size_to_metadata(inode);
 		if (rc) {
 			printk(KERN_ERR	"Problem with "

fs/ecryptfs/super.c

@@ -118,11 +118,15 @@ void ecryptfs_init_inode(struct inode *inode, struct inode *lower_inode)
  */
 static int ecryptfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 {
-	return vfs_statfs(ecryptfs_dentry_to_lower(dentry), buf);
+	struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);
+
+	if (!lower_dentry->d_sb->s_op->statfs)
+		return -ENOSYS;
+	return lower_dentry->d_sb->s_op->statfs(lower_dentry, buf);
 }
 
 /**
- * ecryptfs_clear_inode
+ * ecryptfs_evict_inode
  * @inode - The ecryptfs inode
  *
  * Called by iput() when the inode reference count reached zero
@@ -131,8 +135,10 @@ static int ecryptfs_statfs(struct dentry *dentry, struct kstatfs *buf)
  * on the inode free list. We use this to drop out reference to the
  * lower inode.
  */
-static void ecryptfs_clear_inode(struct inode *inode)
+static void ecryptfs_evict_inode(struct inode *inode)
 {
+	truncate_inode_pages(&inode->i_data, 0);
+	end_writeback(inode);
 	iput(ecryptfs_inode_to_lower(inode));
 }
 
@@ -184,6 +190,6 @@ const struct super_operations ecryptfs_sops = {
 	.drop_inode = generic_delete_inode,
 	.statfs = ecryptfs_statfs,
 	.remount_fs = NULL,
-	.clear_inode = ecryptfs_clear_inode,
+	.evict_inode = ecryptfs_evict_inode,
 	.show_options = ecryptfs_show_options
 };

fs/exofs/exofs.h

@@ -256,7 +256,6 @@ static inline int exofs_oi_read(struct exofs_i_info *oi,
 }
 
 /* inode.c               */
-void exofs_truncate(struct inode *inode);
 int exofs_setattr(struct dentry *, struct iattr *);
 int exofs_write_begin(struct file *file, struct address_space *mapping,
 		loff_t pos, unsigned len, unsigned flags,
@@ -264,7 +263,7 @@ int exofs_write_begin(struct file *file, struct address_space *mapping,
 extern struct inode *exofs_iget(struct super_block *, unsigned long);
 struct inode *exofs_new_inode(struct inode *, int);
 extern int exofs_write_inode(struct inode *, struct writeback_control *wbc);
-extern void exofs_delete_inode(struct inode *);
+extern void exofs_evict_inode(struct inode *);
 
 /* dir.c:                */
 int exofs_add_link(struct dentry *, struct inode *);

fs/exofs/file.c

@@ -86,6 +86,5 @@ const struct file_operations exofs_file_operations = {
 };
 
 const struct inode_operations exofs_file_inode_operations = {
-	.truncate	= exofs_truncate,
 	.setattr	= exofs_setattr,
 };

fs/exofs/inode.c

@@ -697,6 +697,13 @@ static int exofs_writepage(struct page *page, struct writeback_control *wbc)
 	return write_exec(&pcol);
 }
 
+/* i_mutex held using inode->i_size directly */
+static void _write_failed(struct inode *inode, loff_t to)
+{
+	if (to > inode->i_size)
+		truncate_pagecache(inode, to, inode->i_size);
+}
+
 int exofs_write_begin(struct file *file, struct address_space *mapping,
 		loff_t pos, unsigned len, unsigned flags,
 		struct page **pagep, void **fsdata)
@@ -710,7 +717,7 @@ int exofs_write_begin(struct file *file, struct address_space *mapping,
 					 fsdata);
 		if (ret) {
 			EXOFS_DBGMSG("simple_write_begin faild\n");
-			return ret;
+			goto out;
 		}
 
 		page = *pagep;
@@ -725,6 +732,9 @@ int exofs_write_begin(struct file *file, struct address_space *mapping,
 			EXOFS_DBGMSG("__readpage_filler faild\n");
 		}
 	}
+out:
+	if (unlikely(ret))
+		_write_failed(mapping->host, pos + len);
 
 	return ret;
 }
@@ -750,6 +760,10 @@ static int exofs_write_end(struct file *file, struct address_space *mapping,
 	int ret;
 
 	ret = simple_write_end(file, mapping,pos, len, copied, page, fsdata);
+	if (unlikely(ret))
+		_write_failed(inode, pos + len);
+
+	/* TODO: once simple_write_end marks inode dirty remove */
 	if (i_size != inode->i_size)
 		mark_inode_dirty(inode);
 	return ret;
@@ -808,87 +822,55 @@ static inline int exofs_inode_is_fast_symlink(struct inode *inode)
 	return S_ISLNK(inode->i_mode) && (oi->i_data[0] != 0);
 }
 
-/*
- * get_block_t - Fill in a buffer_head
- * An OSD takes care of block allocation so we just fake an allocation by
- * putting in the inode's sector_t in the buffer_head.
- * TODO: What about the case of create==0 and @iblock does not exist in the
- * object?
- */
-static int exofs_get_block(struct inode *inode, sector_t iblock,
-		    struct buffer_head *bh_result, int create)
-{
-	map_bh(bh_result, inode->i_sb, iblock);
-	return 0;
-}
-
 const struct osd_attr g_attr_logical_length = ATTR_DEF(
 	OSD_APAGE_OBJECT_INFORMATION, OSD_ATTR_OI_LOGICAL_LENGTH, 8);
 
-static int _do_truncate(struct inode *inode)
+static int _do_truncate(struct inode *inode, loff_t newsize)
 {
 	struct exofs_i_info *oi = exofs_i(inode);
-	loff_t isize = i_size_read(inode);
 	int ret;
 
 	inode->i_mtime = inode->i_ctime = CURRENT_TIME;
 
-	nobh_truncate_page(inode->i_mapping, isize, exofs_get_block);
+	ret = exofs_oi_truncate(oi, (u64)newsize);
+	if (likely(!ret))
+		truncate_setsize(inode, newsize);
 
-	ret = exofs_oi_truncate(oi, (u64)isize);
-	EXOFS_DBGMSG("(0x%lx) size=0x%llx\n", inode->i_ino, isize);
+	EXOFS_DBGMSG("(0x%lx) size=0x%llx ret=>%d\n",
+		     inode->i_ino, newsize, ret);
 	return ret;
 }
 
 /*
- * Truncate a file to the specified size - all we have to do is set the size
- * attribute.  We make sure the object exists first.
- */
-void exofs_truncate(struct inode *inode)
-{
-	struct exofs_i_info *oi = exofs_i(inode);
-	int ret;
-
-	if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)
-	     || S_ISLNK(inode->i_mode)))
-		return;
-	if (exofs_inode_is_fast_symlink(inode))
-		return;
-	if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
-		return;
-
-	/* if we are about to truncate an object, and it hasn't been
-	 * created yet, wait
-	 */
-	if (unlikely(wait_obj_created(oi)))
-		goto fail;
-
-	ret = _do_truncate(inode);
-	if (ret)
-		goto fail;
-
-out:
-	mark_inode_dirty(inode);
-	return;
-fail:
-	make_bad_inode(inode);
-	goto out;
-}
-
-/*
- * Set inode attributes - just call generic functions.
+ * Set inode attributes - update size attribute on OSD if needed,
+ *                        otherwise just call generic functions.
  */
 int exofs_setattr(struct dentry *dentry, struct iattr *iattr)
 {
 	struct inode *inode = dentry->d_inode;
 	int error;
 
+	/* if we are about to modify an object, and it hasn't been
+	 * created yet, wait
+	 */
+	error = wait_obj_created(exofs_i(inode));
+	if (unlikely(error))
+		return error;
+
 	error = inode_change_ok(inode, iattr);
-	if (error)
+	if (unlikely(error))
 		return error;
 
-	error = inode_setattr(inode, iattr);
-	return error;
+	if ((iattr->ia_valid & ATTR_SIZE) &&
+	    iattr->ia_size != i_size_read(inode)) {
+		error = _do_truncate(inode, iattr->ia_size);
+		if (unlikely(error))
+			return error;
+	}
+
+	setattr_copy(inode, iattr);
+	mark_inode_dirty(inode);
+	return 0;
 }
 
 static const struct osd_attr g_attr_inode_file_layout = ATTR_DEF(
@@ -1325,7 +1307,7 @@ static void delete_done(struct exofs_io_state *ios, void *p)
  * from the OSD here.  We make sure the object was created before we try and
  * delete it.
  */
-void exofs_delete_inode(struct inode *inode)
+void exofs_evict_inode(struct inode *inode)
 {
 	struct exofs_i_info *oi = exofs_i(inode);
 	struct super_block *sb = inode->i_sb;
@@ -1335,30 +1317,27 @@ void exofs_delete_inode(struct inode *inode)
 
 	truncate_inode_pages(&inode->i_data, 0);
 
-	if (is_bad_inode(inode))
+	/* TODO: should do better here */
+	if (inode->i_nlink || is_bad_inode(inode))
 		goto no_delete;
 
-	mark_inode_dirty(inode);
-	exofs_update_inode(inode, inode_needs_sync(inode));
-
 	inode->i_size = 0;
-	if (inode->i_blocks)
-		exofs_truncate(inode);
+	end_writeback(inode);
 
-	clear_inode(inode);
+	/* if we are deleting an obj that hasn't been created yet, wait */
+	if (!obj_created(oi)) {
+		BUG_ON(!obj_2bcreated(oi));
+		wait_event(oi->i_wq, obj_created(oi));
+		/* ignore the error attempt a remove anyway */
+	}
 
+	/* Now Remove the OSD objects */
 	ret = exofs_get_io_state(&sbi->layout, &ios);
 	if (unlikely(ret)) {
 		EXOFS_ERR("%s: exofs_get_io_state failed\n", __func__);
 		return;
 	}
 
-	/* if we are deleting an obj that hasn't been created yet, wait */
-	if (!obj_created(oi)) {
-		BUG_ON(!obj_2bcreated(oi));
-		wait_event(oi->i_wq, obj_created(oi));
-	}
-
 	ios->obj.id = exofs_oi_objno(oi);
 	ios->done = delete_done;
 	ios->private = sbi;
@@ -1374,5 +1353,5 @@ void exofs_delete_inode(struct inode *inode)
 	return;
 
 no_delete:
-	clear_inode(inode);
+	end_writeback(inode);
 }

fs/exofs/super.c

@@ -743,7 +743,7 @@ static const struct super_operations exofs_sops = {
 	.alloc_inode    = exofs_alloc_inode,
 	.destroy_inode  = exofs_destroy_inode,
 	.write_inode    = exofs_write_inode,
-	.delete_inode   = exofs_delete_inode,
+	.evict_inode    = exofs_evict_inode,
 	.put_super      = exofs_put_super,
 	.write_super    = exofs_write_super,
 	.sync_fs	= exofs_sync_fs,

fs/ext2/balloc.c

@@ -571,7 +571,7 @@ do_more:
 error_return:
 	brelse(bitmap_bh);
 	release_blocks(sb, freed);
-	dquot_free_block(inode, freed);
+	dquot_free_block_nodirty(inode, freed);
 }
 
 /**
@@ -1418,7 +1418,8 @@ allocated:
 
 	*errp = 0;
 	brelse(bitmap_bh);
-	dquot_free_block(inode, *count-num);
+	dquot_free_block_nodirty(inode, *count-num);
+	mark_inode_dirty(inode);
 	*count = num;
 	return ret_block;
 
@@ -1428,8 +1429,10 @@ out:
 	/*
 	 * Undo the block allocation
 	 */
-	if (!performed_allocation)
-		dquot_free_block(inode, *count);
+	if (!performed_allocation) {
+		dquot_free_block_nodirty(inode, *count);
+		mark_inode_dirty(inode);
+	}
 	brelse(bitmap_bh);
 	return 0;
 }

fs/ext2/dir.c

@@ -448,6 +448,11 @@ ino_t ext2_inode_by_name(struct inode *dir, struct qstr *child)
 	return res;
 }
 
+static int ext2_prepare_chunk(struct page *page, loff_t pos, unsigned len)
+{
+	return __block_write_begin(page, pos, len, ext2_get_block);
+}
+
 /* Releases the page */
 void ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
 		   struct page *page, struct inode *inode, int update_times)
@@ -458,8 +463,7 @@ void ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
 	int err;
 
 	lock_page(page);
-	err = __ext2_write_begin(NULL, page->mapping, pos, len,
-				AOP_FLAG_UNINTERRUPTIBLE, &page, NULL);
+	err = ext2_prepare_chunk(page, pos, len);
 	BUG_ON(err);
 	de->inode = cpu_to_le32(inode->i_ino);
 	ext2_set_de_type(de, inode);
@@ -542,8 +546,7 @@ int ext2_add_link (struct dentry *dentry, struct inode *inode)
 got_it:
 	pos = page_offset(page) +
 		(char*)de - (char*)page_address(page);
-	err = __ext2_write_begin(NULL, page->mapping, pos, rec_len, 0,
-							&page, NULL);
+	err = ext2_prepare_chunk(page, pos, rec_len);
 	if (err)
 		goto out_unlock;
 	if (de->inode) {
@@ -576,8 +579,7 @@ out_unlock:
  */
 int ext2_delete_entry (struct ext2_dir_entry_2 * dir, struct page * page )
 {
-	struct address_space *mapping = page->mapping;
-	struct inode *inode = mapping->host;
+	struct inode *inode = page->mapping->host;
 	char *kaddr = page_address(page);
 	unsigned from = ((char*)dir - kaddr) & ~(ext2_chunk_size(inode)-1);
 	unsigned to = ((char *)dir - kaddr) +
@@ -601,8 +603,7 @@ int ext2_delete_entry (struct ext2_dir_entry_2 * dir, struct page * page )
 		from = (char*)pde - (char*)page_address(page);
 	pos = page_offset(page) + from;
 	lock_page(page);
-	err = __ext2_write_begin(NULL, page->mapping, pos, to - from, 0,
-							&page, NULL);
+	err = ext2_prepare_chunk(page, pos, to - from);
 	BUG_ON(err);
 	if (pde)
 		pde->rec_len = ext2_rec_len_to_disk(to - from);
@@ -621,8 +622,7 @@ out:
  */
 int ext2_make_empty(struct inode *inode, struct inode *parent)
 {
-	struct address_space *mapping = inode->i_mapping;
-	struct page *page = grab_cache_page(mapping, 0);
+	struct page *page = grab_cache_page(inode->i_mapping, 0);
 	unsigned chunk_size = ext2_chunk_size(inode);
 	struct ext2_dir_entry_2 * de;
 	int err;
@@ -631,8 +631,7 @@ int ext2_make_empty(struct inode *inode, struct inode *parent)
 	if (!page)
 		return -ENOMEM;
 
-	err = __ext2_write_begin(NULL, page->mapping, 0, chunk_size, 0,
-							&page, NULL);
+	err = ext2_prepare_chunk(page, 0, chunk_size);
 	if (err) {
 		unlock_page(page);
 		goto fail;

fs/ext2/ext2.h

@@ -119,7 +119,7 @@ extern unsigned long ext2_count_free (struct buffer_head *, unsigned);
 /* inode.c */
 extern struct inode *ext2_iget (struct super_block *, unsigned long);
 extern int ext2_write_inode (struct inode *, struct writeback_control *);
-extern void ext2_delete_inode (struct inode *);
+extern void ext2_evict_inode(struct inode *);
 extern int ext2_sync_inode (struct inode *);
 extern int ext2_get_block(struct inode *, sector_t, struct buffer_head *, int);
 extern int ext2_setattr (struct dentry *, struct iattr *);
@@ -127,9 +127,6 @@ extern void ext2_set_inode_flags(struct inode *inode);
 extern void ext2_get_inode_flags(struct ext2_inode_info *);
 extern int ext2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		       u64 start, u64 len);
-int __ext2_write_begin(struct file *file, struct address_space *mapping,
-		loff_t pos, unsigned len, unsigned flags,
-		struct page **pagep, void **fsdata);
 
 /* ioctl.c */
 extern long ext2_ioctl(struct file *, unsigned int, unsigned long);

fs/ext2/ialloc.c

@@ -118,19 +118,14 @@ void ext2_free_inode (struct inode * inode)
 	 * Note: we must free any quota before locking the superblock,
 	 * as writing the quota to disk may need the lock as well.
 	 */
-	if (!is_bad_inode(inode)) {
-		/* Quota is already initialized in iput() */
-		ext2_xattr_delete_inode(inode);
-		dquot_free_inode(inode);
-		dquot_drop(inode);
-	}
+	/* Quota is already initialized in iput() */
+	ext2_xattr_delete_inode(inode);
+	dquot_free_inode(inode);
+	dquot_drop(inode);
 
 	es = EXT2_SB(sb)->s_es;
 	is_directory = S_ISDIR(inode->i_mode);
 
-	/* Do this BEFORE marking the inode not in use or returning an error */
-	clear_inode (inode);
-
 	if (ino < EXT2_FIRST_INO(sb) ||
 	    ino > le32_to_cpu(es->s_inodes_count)) {
 		ext2_error (sb, "ext2_free_inode",

fs/ext2/inode.c

@@ -69,26 +69,42 @@ static void ext2_write_failed(struct address_space *mapping, loff_t to)
 /*
  * Called at the last iput() if i_nlink is zero.
  */
-void ext2_delete_inode (struct inode * inode)
+void ext2_evict_inode(struct inode * inode)
 {
-	if (!is_bad_inode(inode))
+	struct ext2_block_alloc_info *rsv;
+	int want_delete = 0;
+
+	if (!inode->i_nlink && !is_bad_inode(inode)) {
+		want_delete = 1;
 		dquot_initialize(inode);
+	} else {
+		dquot_drop(inode);
+	}
+
 	truncate_inode_pages(&inode->i_data, 0);
 
-	if (is_bad_inode(inode))
-		goto no_delete;
-	EXT2_I(inode)->i_dtime	= get_seconds();
-	mark_inode_dirty(inode);
-	__ext2_write_inode(inode, inode_needs_sync(inode));
+	if (want_delete) {
+		/* set dtime */
+		EXT2_I(inode)->i_dtime	= get_seconds();
+		mark_inode_dirty(inode);
+		__ext2_write_inode(inode, inode_needs_sync(inode));
+		/* truncate to 0 */
+		inode->i_size = 0;
+		if (inode->i_blocks)
+			ext2_truncate_blocks(inode, 0);
+	}
 
-	inode->i_size = 0;
-	if (inode->i_blocks)
-		ext2_truncate_blocks(inode, 0);
-	ext2_free_inode (inode);
+	invalidate_inode_buffers(inode);
+	end_writeback(inode);
 
-	return;
-no_delete:
-	clear_inode(inode);	/* We must guarantee clearing of inode... */
+	ext2_discard_reservation(inode);
+	rsv = EXT2_I(inode)->i_block_alloc_info;
+	EXT2_I(inode)->i_block_alloc_info = NULL;
+	if (unlikely(rsv))
+		kfree(rsv);
+
+	if (want_delete)
+		ext2_free_inode(inode);
 }
 
 typedef struct {
@@ -423,6 +439,8 @@ static int ext2_alloc_blocks(struct inode *inode,
 failed_out:
 	for (i = 0; i <index; i++)
 		ext2_free_blocks(inode, new_blocks[i], 1);
+	if (index)
+		mark_inode_dirty(inode);
 	return ret;
 }
 
@@ -765,14 +783,6 @@ ext2_readpages(struct file *file, struct address_space *mapping,
 	return mpage_readpages(mapping, pages, nr_pages, ext2_get_block);
 }
 
-int __ext2_write_begin(struct file *file, struct address_space *mapping,
-		loff_t pos, unsigned len, unsigned flags,
-		struct page **pagep, void **fsdata)
-{
-	return block_write_begin_newtrunc(file, mapping, pos, len, flags,
-					pagep, fsdata, ext2_get_block);
-}
-
 static int
 ext2_write_begin(struct file *file, struct address_space *mapping,
 		loff_t pos, unsigned len, unsigned flags,
@@ -780,8 +790,8 @@ ext2_write_begin(struct file *file, struct address_space *mapping,
 {
 	int ret;
 
-	*pagep = NULL;
-	ret = __ext2_write_begin(file, mapping, pos, len, flags, pagep, fsdata);
+	ret = block_write_begin(mapping, pos, len, flags, pagep,
+				ext2_get_block);
 	if (ret < 0)
 		ext2_write_failed(mapping, pos + len);
 	return ret;
@@ -806,13 +816,8 @@ ext2_nobh_write_begin(struct file *file, struct address_space *mapping,
 {
 	int ret;
 
-	/*
-	 * Dir-in-pagecache still uses ext2_write_begin. Would have to rework
-	 * directory handling code to pass around offsets rather than struct
-	 * pages in order to make this work easily.
-	 */
-	ret = nobh_write_begin_newtrunc(file, mapping, pos, len, flags, pagep,
-						fsdata, ext2_get_block);
+	ret = nobh_write_begin(mapping, pos, len, flags, pagep, fsdata,
+			       ext2_get_block);
 	if (ret < 0)
 		ext2_write_failed(mapping, pos + len);
 	return ret;
@@ -838,7 +843,7 @@ ext2_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
 	struct inode *inode = mapping->host;
 	ssize_t ret;
 
-	ret = blockdev_direct_IO_newtrunc(rw, iocb, inode, inode->i_sb->s_bdev,
+	ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev,
 				iov, offset, nr_segs, ext2_get_block, NULL);
 	if (ret < 0 && (rw & WRITE))
 		ext2_write_failed(mapping, offset + iov_length(iov, nr_segs));
@@ -1006,8 +1011,8 @@ static inline void ext2_free_data(struct inode *inode, __le32 *p, __le32 *q)
 			else if (block_to_free == nr - count)
 				count++;
 			else {
-				mark_inode_dirty(inode);
 				ext2_free_blocks (inode, block_to_free, count);
+				mark_inode_dirty(inode);
 			free_this:
 				block_to_free = nr;
 				count = 1;
@@ -1015,8 +1020,8 @@ static inline void ext2_free_data(struct inode *inode, __le32 *p, __le32 *q)
 		}
 	}
 	if (count > 0) {
-		mark_inode_dirty(inode);
 		ext2_free_blocks (inode, block_to_free, count);
+		mark_inode_dirty(inode);
 	}
 }
 
@@ -1169,15 +1174,10 @@ static void ext2_truncate_blocks(struct inode *inode, loff_t offset)
 	__ext2_truncate_blocks(inode, offset);
 }
 
-int ext2_setsize(struct inode *inode, loff_t newsize)
+static int ext2_setsize(struct inode *inode, loff_t newsize)
 {
-	loff_t oldsize;
 	int error;
 
-	error = inode_newsize_ok(inode, newsize);
-	if (error)
-		return error;
-
 	if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
 	    S_ISLNK(inode->i_mode)))
 		return -EINVAL;
@@ -1197,10 +1197,7 @@ int ext2_setsize(struct inode *inode, loff_t newsize)
 	if (error)
 		return error;
 
-	oldsize = inode->i_size;
-	i_size_write(inode, newsize);
-	truncate_pagecache(inode, oldsize, newsize);
-
+	truncate_setsize(inode, newsize);
 	__ext2_truncate_blocks(inode, newsize);
 
 	inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
@@ -1557,7 +1554,7 @@ int ext2_setattr(struct dentry *dentry, struct iattr *iattr)
 		if (error)
 			return error;
 	}
-	generic_setattr(inode, iattr);
+	setattr_copy(inode, iattr);
 	if (iattr->ia_valid & ATTR_MODE)
 		error = ext2_acl_chmod(inode);
 	mark_inode_dirty(inode);

fs/ext2/super.c

@@ -195,17 +195,6 @@ static void destroy_inodecache(void)
 	kmem_cache_destroy(ext2_inode_cachep);
 }
 
-static void ext2_clear_inode(struct inode *inode)
-{
-	struct ext2_block_alloc_info *rsv = EXT2_I(inode)->i_block_alloc_info;
-
-	dquot_drop(inode);
-	ext2_discard_reservation(inode);
-	EXT2_I(inode)->i_block_alloc_info = NULL;
-	if (unlikely(rsv))
-		kfree(rsv);
-}
-
 static int ext2_show_options(struct seq_file *seq, struct vfsmount *vfs)
 {
 	struct super_block *sb = vfs->mnt_sb;
@@ -299,13 +288,12 @@ static const struct super_operations ext2_sops = {
 	.alloc_inode	= ext2_alloc_inode,
 	.destroy_inode	= ext2_destroy_inode,
 	.write_inode	= ext2_write_inode,
-	.delete_inode	= ext2_delete_inode,
+	.evict_inode	= ext2_evict_inode,
 	.put_super	= ext2_put_super,
 	.write_super	= ext2_write_super,
 	.sync_fs	= ext2_sync_fs,
 	.statfs		= ext2_statfs,
 	.remount_fs	= ext2_remount,
-	.clear_inode	= ext2_clear_inode,
 	.show_options	= ext2_show_options,
 #ifdef CONFIG_QUOTA
 	.quota_read	= ext2_quota_read,

fs/ext2/xattr.c

@@ -674,6 +674,7 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
 			new_bh = sb_getblk(sb, block);
 			if (!new_bh) {
 				ext2_free_blocks(inode, block, 1);
+				mark_inode_dirty(inode);
 				error = -EIO;
 				goto cleanup;
 			}
@@ -703,8 +704,10 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
 		 * written (only some dirty data were not) so we just proceed
 		 * as if nothing happened and cleanup the unused block */
 		if (error && error != -ENOSPC) {
-			if (new_bh && new_bh != old_bh)
-				dquot_free_block(inode, 1);
+			if (new_bh && new_bh != old_bh) {
+				dquot_free_block_nodirty(inode, 1);
+				mark_inode_dirty(inode);
+			}
 			goto cleanup;
 		}
 	} else
@@ -727,6 +730,7 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
 				mb_cache_entry_free(ce);
 			ea_bdebug(old_bh, "freeing");
 			ext2_free_blocks(inode, old_bh->b_blocknr, 1);
+			mark_inode_dirty(inode);
 			/* We let our caller release old_bh, so we
 			 * need to duplicate the buffer before. */
 			get_bh(old_bh);
@@ -736,7 +740,8 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
 			le32_add_cpu(&HDR(old_bh)->h_refcount, -1);
 			if (ce)
 				mb_cache_entry_release(ce);
-			dquot_free_block(inode, 1);
+			dquot_free_block_nodirty(inode, 1);
+			mark_inode_dirty(inode);
 			mark_buffer_dirty(old_bh);
 			ea_bdebug(old_bh, "refcount now=%d",
 				le32_to_cpu(HDR(old_bh)->h_refcount));
@@ -799,7 +804,7 @@ ext2_xattr_delete_inode(struct inode *inode)
 		mark_buffer_dirty(bh);
 		if (IS_SYNC(inode))
 			sync_dirty_buffer(bh);
-		dquot_free_block(inode, 1);
+		dquot_free_block_nodirty(inode, 1);
 	}
 	EXT2_I(inode)->i_file_acl = 0;
 
@@ -838,7 +843,7 @@ ext2_xattr_cache_insert(struct buffer_head *bh)
 	ce = mb_cache_entry_alloc(ext2_xattr_cache, GFP_NOFS);
 	if (!ce)
 		return -ENOMEM;
-	error = mb_cache_entry_insert(ce, bh->b_bdev, bh->b_blocknr, &hash);
+	error = mb_cache_entry_insert(ce, bh->b_bdev, bh->b_blocknr, hash);
 	if (error) {
 		mb_cache_entry_free(ce);
 		if (error == -EBUSY) {
@@ -912,8 +917,8 @@ ext2_xattr_cache_find(struct inode *inode, struct ext2_xattr_header *header)
 		return NULL;  /* never share */
 	ea_idebug(inode, "looking for cached blocks [%x]", (int)hash);
 again:
-	ce = mb_cache_entry_find_first(ext2_xattr_cache, 0,
-				       inode->i_sb->s_bdev, hash);
+	ce = mb_cache_entry_find_first(ext2_xattr_cache, inode->i_sb->s_bdev,
+				       hash);
 	while (ce) {
 		struct buffer_head *bh;
 
@@ -945,7 +950,7 @@ again:
 			unlock_buffer(bh);
 			brelse(bh);
 		}
-		ce = mb_cache_entry_find_next(ce, 0, inode->i_sb->s_bdev, hash);
+		ce = mb_cache_entry_find_next(ce, inode->i_sb->s_bdev, hash);
 	}
 	return NULL;
 }
@@ -1021,9 +1026,7 @@ static void ext2_xattr_rehash(struct ext2_xattr_header *header,
 int __init
 init_ext2_xattr(void)
 {
-	ext2_xattr_cache = mb_cache_create("ext2_xattr", NULL,
-		sizeof(struct mb_cache_entry) +
-		sizeof(((struct mb_cache_entry *) 0)->e_indexes[0]), 1, 6);
+	ext2_xattr_cache = mb_cache_create("ext2_xattr", 6);
 	if (!ext2_xattr_cache)
 		return -ENOMEM;
 	return 0;

fs/ext3/ialloc.c

@@ -119,20 +119,8 @@ void ext3_free_inode (handle_t *handle, struct inode * inode)
 	ino = inode->i_ino;
 	ext3_debug ("freeing inode %lu\n", ino);
 
-	/*
-	 * Note: we must free any quota before locking the superblock,
-	 * as writing the quota to disk may need the lock as well.
-	 */
-	dquot_initialize(inode);
-	ext3_xattr_delete_inode(handle, inode);
-	dquot_free_inode(inode);
-	dquot_drop(inode);
-
 	is_directory = S_ISDIR(inode->i_mode);
 
-	/* Do this BEFORE marking the inode not in use or returning an error */
-	clear_inode (inode);
-
 	es = EXT3_SB(sb)->s_es;
 	if (ino < EXT3_FIRST_INO(sb) || ino > le32_to_cpu(es->s_inodes_count)) {
 		ext3_error (sb, "ext3_free_inode",

fs/ext3/inode.c

@@ -190,18 +190,28 @@ static int truncate_restart_transaction(handle_t *handle, struct inode *inode)
 }
 
 /*
- * Called at the last iput() if i_nlink is zero.
+ * Called at inode eviction from icache
  */
-void ext3_delete_inode (struct inode * inode)
+void ext3_evict_inode (struct inode *inode)
 {
+	struct ext3_block_alloc_info *rsv;
 	handle_t *handle;
+	int want_delete = 0;
 
-	if (!is_bad_inode(inode))
+	if (!inode->i_nlink && !is_bad_inode(inode)) {
 		dquot_initialize(inode);
+		want_delete = 1;
+	}
 
 	truncate_inode_pages(&inode->i_data, 0);
 
-	if (is_bad_inode(inode))
+	ext3_discard_reservation(inode);
+	rsv = EXT3_I(inode)->i_block_alloc_info;
+	EXT3_I(inode)->i_block_alloc_info = NULL;
+	if (unlikely(rsv))
+		kfree(rsv);
+
+	if (!want_delete)
 		goto no_delete;
 
 	handle = start_transaction(inode);
@@ -238,15 +248,22 @@ void ext3_delete_inode (struct inode * inode)
 	 * having errors), but we can't free the inode if the mark_dirty
 	 * fails.
 	 */
-	if (ext3_mark_inode_dirty(handle, inode))
-		/* If that failed, just do the required in-core inode clear. */
-		clear_inode(inode);
-	else
+	if (ext3_mark_inode_dirty(handle, inode)) {
+		/* If that failed, just dquot_drop() and be done with that */
+		dquot_drop(inode);
+		end_writeback(inode);
+	} else {
+		ext3_xattr_delete_inode(handle, inode);
+		dquot_free_inode(inode);
+		dquot_drop(inode);
+		end_writeback(inode);
 		ext3_free_inode(handle, inode);
+	}
 	ext3_journal_stop(handle);
 	return;
 no_delete:
-	clear_inode(inode);	/* We must guarantee clearing of inode... */
+	end_writeback(inode);
+	dquot_drop(inode);
 }
 
 typedef struct {
@@ -1212,8 +1229,7 @@ retry:
 		ret = PTR_ERR(handle);
 		goto out;
 	}
-	ret = block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
-							ext3_get_block);
+	ret = __block_write_begin(page, pos, len, ext3_get_block);
 	if (ret)
 		goto write_begin_failed;
 
@@ -1798,6 +1814,17 @@ retry:
 	ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
 				 offset, nr_segs,
 				 ext3_get_block, NULL);
+	/*
+	 * In case of error extending write may have instantiated a few
+	 * blocks outside i_size. Trim these off again.
+	 */
+	if (unlikely((rw & WRITE) && ret < 0)) {
+		loff_t isize = i_size_read(inode);
+		loff_t end = offset + iov_length(iov, nr_segs);
+
+		if (end > isize)
+			vmtruncate(inode, isize);
+	}
 	if (ret == -ENOSPC && ext3_should_retry_alloc(inode->i_sb, &retries))
 		goto retry;
 
@@ -2560,7 +2587,7 @@ out_stop:
 	 * If this was a simple ftruncate(), and the file will remain alive
 	 * then we need to clear up the orphan record which we created above.
 	 * However, if this was a real unlink then we were called by
-	 * ext3_delete_inode(), and we allow that function to clean up the
+	 * ext3_evict_inode(), and we allow that function to clean up the
 	 * orphan info for us.
 	 */
 	if (inode->i_nlink)
@@ -3204,9 +3231,17 @@ int ext3_setattr(struct dentry *dentry, struct iattr *attr)
 		ext3_journal_stop(handle);
 	}
 
-	rc = inode_setattr(inode, attr);
+	if ((attr->ia_valid & ATTR_SIZE) &&
+	    attr->ia_size != i_size_read(inode)) {
+		rc = vmtruncate(inode, attr->ia_size);
+		if (rc)
+			goto err_out;
+	}
+
+	setattr_copy(inode, attr);
+	mark_inode_dirty(inode);
 
-	if (!rc && (ia_valid & ATTR_MODE))
+	if (ia_valid & ATTR_MODE)
 		rc = ext3_acl_chmod(inode);
 
 err_out:

fs/ext3/super.c

@@ -527,17 +527,6 @@ static void destroy_inodecache(void)
 	kmem_cache_destroy(ext3_inode_cachep);
 }
 
-static void ext3_clear_inode(struct inode *inode)
-{
-	struct ext3_block_alloc_info *rsv = EXT3_I(inode)->i_block_alloc_info;
-
-	dquot_drop(inode);
-	ext3_discard_reservation(inode);
-	EXT3_I(inode)->i_block_alloc_info = NULL;
-	if (unlikely(rsv))
-		kfree(rsv);
-}
-
 static inline void ext3_show_quota_options(struct seq_file *seq, struct super_block *sb)
 {
 #if defined(CONFIG_QUOTA)
@@ -780,14 +769,13 @@ static const struct super_operations ext3_sops = {
 	.destroy_inode	= ext3_destroy_inode,
 	.write_inode	= ext3_write_inode,
 	.dirty_inode	= ext3_dirty_inode,
-	.delete_inode	= ext3_delete_inode,
+	.evict_inode	= ext3_evict_inode,
 	.put_super	= ext3_put_super,
 	.sync_fs	= ext3_sync_fs,
 	.freeze_fs	= ext3_freeze,
 	.unfreeze_fs	= ext3_unfreeze,
 	.statfs		= ext3_statfs,
 	.remount_fs	= ext3_remount,
-	.clear_inode	= ext3_clear_inode,
 	.show_options	= ext3_show_options,
 #ifdef CONFIG_QUOTA
 	.quota_read	= ext3_quota_read,

fs/ext3/xattr.c

@@ -1139,7 +1139,7 @@ ext3_xattr_cache_insert(struct buffer_head *bh)
 		ea_bdebug(bh, "out of memory");
 		return;
 	}
-	error = mb_cache_entry_insert(ce, bh->b_bdev, bh->b_blocknr, &hash);
+	error = mb_cache_entry_insert(ce, bh->b_bdev, bh->b_blocknr, hash);
 	if (error) {
 		mb_cache_entry_free(ce);
 		if (error == -EBUSY) {
@@ -1211,8 +1211,8 @@ ext3_xattr_cache_find(struct inode *inode, struct ext3_xattr_header *header,
 		return NULL;  /* never share */
 	ea_idebug(inode, "looking for cached blocks [%x]", (int)hash);
 again:
-	ce = mb_cache_entry_find_first(ext3_xattr_cache, 0,
-				       inode->i_sb->s_bdev, hash);
+	ce = mb_cache_entry_find_first(ext3_xattr_cache, inode->i_sb->s_bdev,
+				       hash);
 	while (ce) {
 		struct buffer_head *bh;
 
@@ -1237,7 +1237,7 @@ again:
 			return bh;
 		}
 		brelse(bh);
-		ce = mb_cache_entry_find_next(ce, 0, inode->i_sb->s_bdev, hash);
+		ce = mb_cache_entry_find_next(ce, inode->i_sb->s_bdev, hash);
 	}
 	return NULL;
 }
@@ -1313,9 +1313,7 @@ static void ext3_xattr_rehash(struct ext3_xattr_header *header,
 int __init
 init_ext3_xattr(void)
 {
-	ext3_xattr_cache = mb_cache_create("ext3_xattr", NULL,
-		sizeof(struct mb_cache_entry) +
-		sizeof(((struct mb_cache_entry *) 0)->e_indexes[0]), 1, 6);
+	ext3_xattr_cache = mb_cache_create("ext3_xattr", 6);
 	if (!ext3_xattr_cache)
 		return -ENOMEM;
 	return 0;

fs/ext4/ext4.h

@@ -1643,7 +1643,8 @@ extern int  ext4_write_inode(struct inode *, struct writeback_control *);
 extern int  ext4_setattr(struct dentry *, struct iattr *);
 extern int  ext4_getattr(struct vfsmount *mnt, struct dentry *dentry,
 				struct kstat *stat);
-extern void ext4_delete_inode(struct inode *);
+extern void ext4_evict_inode(struct inode *);
+extern void ext4_clear_inode(struct inode *);
 extern int  ext4_sync_inode(handle_t *, struct inode *);
 extern void ext4_dirty_inode(struct inode *);
 extern int ext4_change_inode_journal_flag(struct inode *, int);

fs/ext4/ialloc.c

@@ -222,7 +222,7 @@ void ext4_free_inode(handle_t *handle, struct inode *inode)
 	is_directory = S_ISDIR(inode->i_mode);
 
 	/* Do this BEFORE marking the inode not in use or returning an error */
-	clear_inode(inode);
+	ext4_clear_inode(inode);
 
 	es = EXT4_SB(sb)->s_es;
 	if (ino < EXT4_FIRST_INO(sb) || ino > le32_to_cpu(es->s_inodes_count)) {

fs/ext4/inode.c

@@ -167,11 +167,16 @@ int ext4_truncate_restart_trans(handle_t *handle, struct inode *inode,
 /*
  * Called at the last iput() if i_nlink is zero.
  */
-void ext4_delete_inode(struct inode *inode)
+void ext4_evict_inode(struct inode *inode)
 {
 	handle_t *handle;
 	int err;
 
+	if (inode->i_nlink) {
+		truncate_inode_pages(&inode->i_data, 0);
+		goto no_delete;
+	}
+
 	if (!is_bad_inode(inode))
 		dquot_initialize(inode);
 
@@ -246,13 +251,13 @@ void ext4_delete_inode(struct inode *inode)
 	 */
 	if (ext4_mark_inode_dirty(handle, inode))
 		/* If that failed, just do the required in-core inode clear. */
-		clear_inode(inode);
+		ext4_clear_inode(inode);
 	else
 		ext4_free_inode(handle, inode);
 	ext4_journal_stop(handle);
 	return;
 no_delete:
-	clear_inode(inode);	/* We must guarantee clearing of inode... */
+	ext4_clear_inode(inode);	/* We must guarantee clearing of inode... */
 }
 
 typedef struct {
@@ -1602,11 +1607,9 @@ retry:
 	*pagep = page;
 
 	if (ext4_should_dioread_nolock(inode))
-		ret = block_write_begin(file, mapping, pos, len, flags, pagep,
-				fsdata, ext4_get_block_write);
+		ret = __block_write_begin(page, pos, len, ext4_get_block_write);
 	else
-		ret = block_write_begin(file, mapping, pos, len, flags, pagep,
-				fsdata, ext4_get_block);
+		ret = __block_write_begin(page, pos, len, ext4_get_block);
 
 	if (!ret && ext4_should_journal_data(inode)) {
 		ret = walk_page_buffers(handle, page_buffers(page),
@@ -1617,7 +1620,7 @@ retry:
 		unlock_page(page);
 		page_cache_release(page);
 		/*
-		 * block_write_begin may have instantiated a few blocks
+		 * __block_write_begin may have instantiated a few blocks
 		 * outside i_size.  Trim these off again. Don't need
 		 * i_size_read because we hold i_mutex.
 		 *
@@ -3205,8 +3208,7 @@ retry:
 	}
 	*pagep = page;
 
-	ret = block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
-				ext4_da_get_block_prep);
+	ret = __block_write_begin(page, pos, len, ext4_da_get_block_prep);
 	if (ret < 0) {
 		unlock_page(page);
 		ext4_journal_stop(handle);
@@ -3565,15 +3567,24 @@ static ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb,
 
 retry:
 	if (rw == READ && ext4_should_dioread_nolock(inode))
-		ret = blockdev_direct_IO_no_locking(rw, iocb, inode,
+		ret = __blockdev_direct_IO(rw, iocb, inode,
 				 inode->i_sb->s_bdev, iov,
 				 offset, nr_segs,
-				 ext4_get_block, NULL);
-	else
+				 ext4_get_block, NULL, NULL, 0);
+	else {
 		ret = blockdev_direct_IO(rw, iocb, inode,
 				 inode->i_sb->s_bdev, iov,
 				 offset, nr_segs,
 				 ext4_get_block, NULL);
+
+		if (unlikely((rw & WRITE) && ret < 0)) {
+			loff_t isize = i_size_read(inode);
+			loff_t end = offset + iov_length(iov, nr_segs);
+
+			if (end > isize)
+				vmtruncate(inode, isize);
+		}
+	}
 	if (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
 		goto retry;
 
@@ -5536,11 +5547,19 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
 			ext4_truncate(inode);
 	}
 
-	rc = inode_setattr(inode, attr);
+	if ((attr->ia_valid & ATTR_SIZE) &&
+	    attr->ia_size != i_size_read(inode))
+		rc = vmtruncate(inode, attr->ia_size);
 
-	/* If inode_setattr's call to ext4_truncate failed to get a
-	 * transaction handle at all, we need to clean up the in-core
-	 * orphan list manually. */
+	if (!rc) {
+		setattr_copy(inode, attr);
+		mark_inode_dirty(inode);
+	}
+
+	/*
+	 * If the call to ext4_truncate failed to get a transaction handle at
+	 * all, we need to clean up the in-core orphan list manually.
+	 */
 	if (inode->i_nlink)
 		ext4_orphan_del(NULL, inode);
 

fs/ext4/super.c

@@ -868,8 +868,10 @@ static void destroy_inodecache(void)
 	kmem_cache_destroy(ext4_inode_cachep);
 }
 
-static void ext4_clear_inode(struct inode *inode)
+void ext4_clear_inode(struct inode *inode)
 {
+	invalidate_inode_buffers(inode);
+	end_writeback(inode);
 	dquot_drop(inode);
 	ext4_discard_preallocations(inode);
 	if (EXT4_JOURNAL(inode))
@@ -1158,14 +1160,13 @@ static const struct super_operations ext4_sops = {
 	.destroy_inode	= ext4_destroy_inode,
 	.write_inode	= ext4_write_inode,
 	.dirty_inode	= ext4_dirty_inode,
-	.delete_inode	= ext4_delete_inode,
+	.evict_inode	= ext4_evict_inode,
 	.put_super	= ext4_put_super,
 	.sync_fs	= ext4_sync_fs,
 	.freeze_fs	= ext4_freeze,
 	.unfreeze_fs	= ext4_unfreeze,
 	.statfs		= ext4_statfs,
 	.remount_fs	= ext4_remount,
-	.clear_inode	= ext4_clear_inode,
 	.show_options	= ext4_show_options,
 #ifdef CONFIG_QUOTA
 	.quota_read	= ext4_quota_read,
@@ -1179,12 +1180,11 @@ static const struct super_operations ext4_nojournal_sops = {
 	.destroy_inode	= ext4_destroy_inode,
 	.write_inode	= ext4_write_inode,
 	.dirty_inode	= ext4_dirty_inode,
-	.delete_inode	= ext4_delete_inode,
+	.evict_inode	= ext4_evict_inode,
 	.write_super	= ext4_write_super,
 	.put_super	= ext4_put_super,
 	.statfs		= ext4_statfs,
 	.remount_fs	= ext4_remount,
-	.clear_inode	= ext4_clear_inode,
 	.show_options	= ext4_show_options,
 #ifdef CONFIG_QUOTA
 	.quota_read	= ext4_quota_read,

fs/ext4/xattr.c

@@ -1417,7 +1417,7 @@ ext4_xattr_cache_insert(struct buffer_head *bh)
 		ea_bdebug(bh, "out of memory");
 		return;
 	}
-	error = mb_cache_entry_insert(ce, bh->b_bdev, bh->b_blocknr, &hash);
+	error = mb_cache_entry_insert(ce, bh->b_bdev, bh->b_blocknr, hash);
 	if (error) {
 		mb_cache_entry_free(ce);
 		if (error == -EBUSY) {
@@ -1489,8 +1489,8 @@ ext4_xattr_cache_find(struct inode *inode, struct ext4_xattr_header *header,
 		return NULL;  /* never share */
 	ea_idebug(inode, "looking for cached blocks [%x]", (int)hash);
 again:
-	ce = mb_cache_entry_find_first(ext4_xattr_cache, 0,
-				       inode->i_sb->s_bdev, hash);
+	ce = mb_cache_entry_find_first(ext4_xattr_cache, inode->i_sb->s_bdev,
+				       hash);
 	while (ce) {
 		struct buffer_head *bh;
 
@@ -1514,7 +1514,7 @@ again:
 			return bh;
 		}
 		brelse(bh);
-		ce = mb_cache_entry_find_next(ce, 0, inode->i_sb->s_bdev, hash);
+		ce = mb_cache_entry_find_next(ce, inode->i_sb->s_bdev, hash);
 	}
 	return NULL;
 }
@@ -1590,9 +1590,7 @@ static void ext4_xattr_rehash(struct ext4_xattr_header *header,
 int __init
 init_ext4_xattr(void)
 {
-	ext4_xattr_cache = mb_cache_create("ext4_xattr", NULL,
-		sizeof(struct mb_cache_entry) +
-		sizeof(((struct mb_cache_entry *) 0)->e_indexes[0]), 1, 6);
+	ext4_xattr_cache = mb_cache_create("ext4_xattr", 6);
 	if (!ext4_xattr_cache)
 		return -ENOMEM;
 	return 0;

fs/fat/fat.h

@@ -306,7 +306,6 @@ extern long fat_generic_ioctl(struct file *filp, unsigned int cmd,
 extern const struct file_operations fat_file_operations;
 extern const struct inode_operations fat_file_inode_operations;
 extern int fat_setattr(struct dentry * dentry, struct iattr * attr);
-extern int fat_setsize(struct inode *inode, loff_t offset);
 extern void fat_truncate_blocks(struct inode *inode, loff_t offset);
 extern int fat_getattr(struct vfsmount *mnt, struct dentry *dentry,
 		       struct kstat *stat);

fs/fat/file.c

@@ -364,18 +364,6 @@ static int fat_allow_set_time(struct msdos_sb_info *sbi, struct inode *inode)
 	return 0;
 }
 
-int fat_setsize(struct inode *inode, loff_t offset)
-{
-	int error;
-
-	error = simple_setsize(inode, offset);
-	if (error)
-		return error;
-	fat_truncate_blocks(inode, offset);
-
-	return error;
-}
-
 #define TIMES_SET_FLAGS	(ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
 /* valid file mode bits */
 #define FAT_VALID_MODE	(S_IFREG | S_IFDIR | S_IRWXUGO)
@@ -387,21 +375,6 @@ int fat_setattr(struct dentry *dentry, struct iattr *attr)
 	unsigned int ia_valid;
 	int error;
 
-	/*
-	 * Expand the file. Since inode_setattr() updates ->i_size
-	 * before calling the ->truncate(), but FAT needs to fill the
-	 * hole before it. XXX: this is no longer true with new truncate
-	 * sequence.
-	 */
-	if (attr->ia_valid & ATTR_SIZE) {
-		if (attr->ia_size > inode->i_size) {
-			error = fat_cont_expand(inode, attr->ia_size);
-			if (error || attr->ia_valid == ATTR_SIZE)
-				goto out;
-			attr->ia_valid &= ~ATTR_SIZE;
-		}
-	}
-
 	/* Check for setting the inode time. */
 	ia_valid = attr->ia_valid;
 	if (ia_valid & TIMES_SET_FLAGS) {
@@ -417,6 +390,21 @@ int fat_setattr(struct dentry *dentry, struct iattr *attr)
 		goto out;
 	}
 
+	/*
+	 * Expand the file. Since inode_setattr() updates ->i_size
+	 * before calling the ->truncate(), but FAT needs to fill the
+	 * hole before it. XXX: this is no longer true with new truncate
+	 * sequence.
+	 */
+	if (attr->ia_valid & ATTR_SIZE) {
+		if (attr->ia_size > inode->i_size) {
+			error = fat_cont_expand(inode, attr->ia_size);
+			if (error || attr->ia_valid == ATTR_SIZE)
+				goto out;
+			attr->ia_valid &= ~ATTR_SIZE;
+		}
+	}
+
 	if (((attr->ia_valid & ATTR_UID) &&
 	     (attr->ia_uid != sbi->options.fs_uid)) ||
 	    ((attr->ia_valid & ATTR_GID) &&
@@ -441,12 +429,11 @@ int fat_setattr(struct dentry *dentry, struct iattr *attr)
 	}
 
 	if (attr->ia_valid & ATTR_SIZE) {
-		error = fat_setsize(inode, attr->ia_size);
-		if (error)
-			goto out;
+		truncate_setsize(inode, attr->ia_size);
+		fat_truncate_blocks(inode, attr->ia_size);
 	}
 
-	generic_setattr(inode, attr);
+	setattr_copy(inode, attr);
 	mark_inode_dirty(inode);
 out:
 	return error;

fs/fat/inode.c

@@ -159,7 +159,7 @@ static int fat_write_begin(struct file *file, struct address_space *mapping,
 	int err;
 
 	*pagep = NULL;
-	err = cont_write_begin_newtrunc(file, mapping, pos, len, flags,
+	err = cont_write_begin(file, mapping, pos, len, flags,
 				pagep, fsdata, fat_get_block,
 				&MSDOS_I(mapping->host)->mmu_private);
 	if (err < 0)
@@ -212,8 +212,8 @@ static ssize_t fat_direct_IO(int rw, struct kiocb *iocb,
 	 * FAT need to use the DIO_LOCKING for avoiding the race
 	 * condition of fat_get_block() and ->truncate().
 	 */
-	ret = blockdev_direct_IO_newtrunc(rw, iocb, inode, inode->i_sb->s_bdev,
-				iov, offset, nr_segs, fat_get_block, NULL);
+	ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev,
+				 iov, offset, nr_segs, fat_get_block, NULL);
 	if (ret < 0 && (rw & WRITE))
 		fat_write_failed(mapping, offset + iov_length(iov, nr_segs));
 
@@ -263,7 +263,7 @@ static const struct address_space_operations fat_aops = {
  *			check if the location is still valid and retry if it
  *			isn't. Otherwise we do changes.
  *		5. Spinlock is used to protect hash/unhash/location check/lookup
- *		6. fat_clear_inode() unhashes the F-d-c entry.
+ *		6. fat_evict_inode() unhashes the F-d-c entry.
  *		7. lookup() and readdir() do igrab() if they find a F-d-c entry
  *			and consider negative result as cache miss.
  */
@@ -448,16 +448,15 @@ out:
 
 EXPORT_SYMBOL_GPL(fat_build_inode);
 
-static void fat_delete_inode(struct inode *inode)
+static void fat_evict_inode(struct inode *inode)
 {
 	truncate_inode_pages(&inode->i_data, 0);
-	inode->i_size = 0;
-	fat_truncate_blocks(inode, 0);
-	clear_inode(inode);
-}
-
-static void fat_clear_inode(struct inode *inode)
-{
+	if (!inode->i_nlink) {
+		inode->i_size = 0;
+		fat_truncate_blocks(inode, 0);
+	}
+	invalidate_inode_buffers(inode);
+	end_writeback(inode);
 	fat_cache_inval_inode(inode);
 	fat_detach(inode);
 }
@@ -674,12 +673,11 @@ static const struct super_operations fat_sops = {
 	.alloc_inode	= fat_alloc_inode,
 	.destroy_inode	= fat_destroy_inode,
 	.write_inode	= fat_write_inode,
-	.delete_inode	= fat_delete_inode,
+	.evict_inode	= fat_evict_inode,
 	.put_super	= fat_put_super,
 	.write_super	= fat_write_super,
 	.sync_fs	= fat_sync_fs,
 	.statfs		= fat_statfs,
-	.clear_inode	= fat_clear_inode,
 	.remount_fs	= fat_remount,
 
 	.show_options	= fat_show_options,

fs/freevxfs/vxfs_extern.h

@@ -63,7 +63,7 @@ extern void			vxfs_put_fake_inode(struct inode *);
 extern struct vxfs_inode_info *	vxfs_blkiget(struct super_block *, u_long, ino_t);
 extern struct vxfs_inode_info *	vxfs_stiget(struct super_block *, ino_t);
 extern struct inode *		vxfs_iget(struct super_block *, ino_t);
-extern void			vxfs_clear_inode(struct inode *);
+extern void			vxfs_evict_inode(struct inode *);
 
 /* vxfs_lookup.c */
 extern const struct inode_operations	vxfs_dir_inode_ops;

fs/freevxfs/vxfs_inode.c

@@ -337,15 +337,17 @@ vxfs_iget(struct super_block *sbp, ino_t ino)
 }
 
 /**
- * vxfs_clear_inode - remove inode from main memory
+ * vxfs_evict_inode - remove inode from main memory
  * @ip:		inode to discard.
  *
  * Description:
- *  vxfs_clear_inode() is called on the final iput and frees the private
+ *  vxfs_evict_inode() is called on the final iput and frees the private
  *  inode area.
  */
 void
-vxfs_clear_inode(struct inode *ip)
+vxfs_evict_inode(struct inode *ip)
 {
+	truncate_inode_pages(&ip->i_data, 0);
+	end_writeback(ip);
 	kmem_cache_free(vxfs_inode_cachep, ip->i_private);
 }

fs/freevxfs/vxfs_super.c

@@ -61,7 +61,7 @@ static int		vxfs_statfs(struct dentry *, struct kstatfs *);
 static int		vxfs_remount(struct super_block *, int *, char *);
 
 static const struct super_operations vxfs_super_ops = {
-	.clear_inode =		vxfs_clear_inode,
+	.evict_inode =		vxfs_evict_inode,
 	.put_super =		vxfs_put_super,
 	.statfs =		vxfs_statfs,
 	.remount_fs =		vxfs_remount,

fs/fs-writeback.c

@@ -352,7 +352,7 @@ writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
 
 	spin_lock(&inode_lock);
 	inode->i_state &= ~I_SYNC;
-	if (!(inode->i_state & (I_FREEING | I_CLEAR))) {
+	if (!(inode->i_state & I_FREEING)) {
 		if ((inode->i_state & I_DIRTY_PAGES) && wbc->for_kupdate) {
 			/*
 			 * More pages get dirtied by a fast dirtier.
@@ -499,7 +499,7 @@ static int writeback_sb_inodes(struct super_block *sb, struct bdi_writeback *wb,
 		if (inode_dirtied_after(inode, wbc->wb_start))
 			return 1;
 
-		BUG_ON(inode->i_state & (I_FREEING | I_CLEAR));
+		BUG_ON(inode->i_state & I_FREEING);
 		__iget(inode);
 		pages_skipped = wbc->pages_skipped;
 		writeback_single_inode(inode, wbc);
@@ -936,7 +936,7 @@ void __mark_inode_dirty(struct inode *inode, int flags)
 			if (hlist_unhashed(&inode->i_hash))
 				goto out;
 		}
-		if (inode->i_state & (I_FREEING|I_CLEAR))
+		if (inode->i_state & I_FREEING)
 			goto out;
 
 		/*
@@ -1002,7 +1002,7 @@ static void wait_sb_inodes(struct super_block *sb)
 	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
 		struct address_space *mapping;
 
-		if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE|I_NEW))
+		if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW))
 			continue;
 		mapping = inode->i_mapping;
 		if (mapping->nrpages == 0)

fs/fuse/dir.c

@@ -1270,21 +1270,18 @@ static int fuse_do_setattr(struct dentry *entry, struct iattr *attr,
 	if (!fuse_allow_task(fc, current))
 		return -EACCES;
 
-	if (fc->flags & FUSE_DEFAULT_PERMISSIONS) {
-		err = inode_change_ok(inode, attr);
-		if (err)
-			return err;
-	}
+	if (!(fc->flags & FUSE_DEFAULT_PERMISSIONS))
+		attr->ia_valid |= ATTR_FORCE;
+
+	err = inode_change_ok(inode, attr);
+	if (err)
+		return err;
 
 	if ((attr->ia_valid & ATTR_OPEN) && fc->atomic_o_trunc)
 		return 0;
 
-	if (attr->ia_valid & ATTR_SIZE) {
-		err = inode_newsize_ok(inode, attr->ia_size);
-		if (err)
-			return err;
+	if (attr->ia_valid & ATTR_SIZE)
 		is_truncate = true;
-	}
 
 	req = fuse_get_req(fc);
 	if (IS_ERR(req))

fs/fuse/inode.c

@@ -122,8 +122,10 @@ void fuse_send_forget(struct fuse_conn *fc, struct fuse_req *req,
 	fuse_request_send_noreply(fc, req);
 }
 
-static void fuse_clear_inode(struct inode *inode)
+static void fuse_evict_inode(struct inode *inode)
 {
+	truncate_inode_pages(&inode->i_data, 0);
+	end_writeback(inode);
 	if (inode->i_sb->s_flags & MS_ACTIVE) {
 		struct fuse_conn *fc = get_fuse_conn(inode);
 		struct fuse_inode *fi = get_fuse_inode(inode);
@@ -736,7 +738,7 @@ static const struct export_operations fuse_export_operations = {
 static const struct super_operations fuse_super_operations = {
 	.alloc_inode    = fuse_alloc_inode,
 	.destroy_inode  = fuse_destroy_inode,
-	.clear_inode	= fuse_clear_inode,
+	.evict_inode	= fuse_evict_inode,
 	.drop_inode	= generic_delete_inode,
 	.remount_fs	= fuse_remount_fs,
 	.put_super	= fuse_put_super,

fs/gfs2/aops.c

@@ -697,12 +697,12 @@ out:
 	page_cache_release(page);
 
 	/*
-	 * XXX(hch): the call below should probably be replaced with
+	 * XXX(truncate): the call below should probably be replaced with
 	 * a call to the gfs2-specific truncate blocks helper to actually
 	 * release disk blocks..
 	 */
 	if (pos + len > ip->i_inode.i_size)
-		simple_setsize(&ip->i_inode, ip->i_inode.i_size);
+		truncate_setsize(&ip->i_inode, ip->i_inode.i_size);
 out_endtrans:
 	gfs2_trans_end(sdp);
 out_trans_fail:
@@ -1042,9 +1042,9 @@ static ssize_t gfs2_direct_IO(int rw, struct kiocb *iocb,
 	if (rv != 1)
 		goto out; /* dio not valid, fall back to buffered i/o */
 
-	rv = blockdev_direct_IO_no_locking(rw, iocb, inode, inode->i_sb->s_bdev,
-					   iov, offset, nr_segs,
-					   gfs2_get_block_direct, NULL);
+	rv = __blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
+				  offset, nr_segs, gfs2_get_block_direct,
+				  NULL, NULL, 0);
 out:
 	gfs2_glock_dq_m(1, &gh);
 	gfs2_holder_uninit(&gh);

fs/gfs2/inode.c

@@ -84,7 +84,7 @@ static int iget_skip_test(struct inode *inode, void *opaque)
 	struct gfs2_skip_data *data = opaque;
 
 	if (ip->i_no_addr == data->no_addr) {
-		if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)){
+		if (inode->i_state & (I_FREEING|I_WILL_FREE)){
 			data->skipped = 1;
 			return 0;
 		}
@@ -991,18 +991,29 @@ fail:
 
 static int __gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
 {
+	struct inode *inode = &ip->i_inode;
 	struct buffer_head *dibh;
 	int error;
 
 	error = gfs2_meta_inode_buffer(ip, &dibh);
-	if (!error) {
-		error = inode_setattr(&ip->i_inode, attr);
-		gfs2_assert_warn(GFS2_SB(&ip->i_inode), !error);
-		gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-		gfs2_dinode_out(ip, dibh->b_data);
-		brelse(dibh);
+	if (error)
+		return error;
+
+	if ((attr->ia_valid & ATTR_SIZE) &&
+	    attr->ia_size != i_size_read(inode)) {
+		error = vmtruncate(inode, attr->ia_size);
+		if (error)
+			return error;
 	}
-	return error;
+
+	setattr_copy(inode, attr);
+	mark_inode_dirty(inode);
+
+	gfs2_assert_warn(GFS2_SB(inode), !error);
+	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+	gfs2_dinode_out(ip, dibh->b_data);
+	brelse(dibh);
+	return 0;
 }
 
 /**

fs/gfs2/ops_inode.c

@@ -1072,7 +1072,7 @@ int gfs2_permission(struct inode *inode, int mask)
 }
 
 /*
- * XXX: should be changed to have proper ordering by opencoding simple_setsize
+ * XXX(truncate): the truncate_setsize calls should be moved to the end.
  */
 static int setattr_size(struct inode *inode, struct iattr *attr)
 {
@@ -1084,10 +1084,8 @@ static int setattr_size(struct inode *inode, struct iattr *attr)
 		error = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks);
 		if (error)
 			return error;
-		error = simple_setsize(inode, attr->ia_size);
+		truncate_setsize(inode, attr->ia_size);
 		gfs2_trans_end(sdp);
-		if (error) 
-			return error;
 	}
 
 	error = gfs2_truncatei(ip, attr->ia_size);
@@ -1136,8 +1134,16 @@ static int setattr_chown(struct inode *inode, struct iattr *attr)
 	if (error)
 		goto out_end_trans;
 
-	error = inode_setattr(inode, attr);
-	gfs2_assert_warn(sdp, !error);
+	if ((attr->ia_valid & ATTR_SIZE) &&
+	    attr->ia_size != i_size_read(inode)) {
+		int error;
+
+		error = vmtruncate(inode, attr->ia_size);
+		gfs2_assert_warn(sdp, !error);
+	}
+
+	setattr_copy(inode, attr);
+	mark_inode_dirty(inode);
 
 	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
 	gfs2_dinode_out(ip, dibh->b_data);

fs/gfs2/super.c

@@ -1188,7 +1188,7 @@ static int gfs2_remount_fs(struct super_block *sb, int *flags, char *data)
  * node for later deallocation.
  */
 
-static void gfs2_drop_inode(struct inode *inode)
+static int gfs2_drop_inode(struct inode *inode)
 {
 	struct gfs2_inode *ip = GFS2_I(inode);
 
@@ -1197,26 +1197,7 @@ static void gfs2_drop_inode(struct inode *inode)
 		if (gl && test_bit(GLF_DEMOTE, &gl->gl_flags))
 			clear_nlink(inode);
 	}
-	generic_drop_inode(inode);
-}
-
-/**
- * gfs2_clear_inode - Deallocate an inode when VFS is done with it
- * @inode: The VFS inode
- *
- */
-
-static void gfs2_clear_inode(struct inode *inode)
-{
-	struct gfs2_inode *ip = GFS2_I(inode);
-
-	ip->i_gl->gl_object = NULL;
-	gfs2_glock_put(ip->i_gl);
-	ip->i_gl = NULL;
-	if (ip->i_iopen_gh.gh_gl) {
-		ip->i_iopen_gh.gh_gl->gl_object = NULL;
-		gfs2_glock_dq_uninit(&ip->i_iopen_gh);
-	}
+	return generic_drop_inode(inode);
 }
 
 static int is_ancestor(const struct dentry *d1, const struct dentry *d2)
@@ -1344,13 +1325,16 @@ static int gfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
  * is safe, just less efficient.
  */
 
-static void gfs2_delete_inode(struct inode *inode)
+static void gfs2_evict_inode(struct inode *inode)
 {
 	struct gfs2_sbd *sdp = inode->i_sb->s_fs_info;
 	struct gfs2_inode *ip = GFS2_I(inode);
 	struct gfs2_holder gh;
 	int error;
 
+	if (inode->i_nlink)
+		goto out;
+
 	error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
 	if (unlikely(error)) {
 		gfs2_glock_dq_uninit(&ip->i_iopen_gh);
@@ -1404,10 +1388,18 @@ out_unlock:
 	gfs2_holder_uninit(&ip->i_iopen_gh);
 	gfs2_glock_dq_uninit(&gh);
 	if (error && error != GLR_TRYFAILED && error != -EROFS)
-		fs_warn(sdp, "gfs2_delete_inode: %d\n", error);
+		fs_warn(sdp, "gfs2_evict_inode: %d\n", error);
 out:
 	truncate_inode_pages(&inode->i_data, 0);
-	clear_inode(inode);
+	end_writeback(inode);
+
+	ip->i_gl->gl_object = NULL;
+	gfs2_glock_put(ip->i_gl);
+	ip->i_gl = NULL;
+	if (ip->i_iopen_gh.gh_gl) {
+		ip->i_iopen_gh.gh_gl->gl_object = NULL;
+		gfs2_glock_dq_uninit(&ip->i_iopen_gh);
+	}
 }
 
 static struct inode *gfs2_alloc_inode(struct super_block *sb)
@@ -1431,14 +1423,13 @@ const struct super_operations gfs2_super_ops = {
 	.alloc_inode		= gfs2_alloc_inode,
 	.destroy_inode		= gfs2_destroy_inode,
 	.write_inode		= gfs2_write_inode,
-	.delete_inode		= gfs2_delete_inode,
+	.evict_inode		= gfs2_evict_inode,
 	.put_super		= gfs2_put_super,
 	.sync_fs		= gfs2_sync_fs,
 	.freeze_fs 		= gfs2_freeze,
 	.unfreeze_fs		= gfs2_unfreeze,
 	.statfs			= gfs2_statfs,
 	.remount_fs		= gfs2_remount_fs,
-	.clear_inode		= gfs2_clear_inode,
 	.drop_inode		= gfs2_drop_inode,
 	.show_options		= gfs2_show_options,
 };

fs/gfs2/xattr.c

@@ -1296,6 +1296,7 @@ fail:
 
 int gfs2_xattr_acl_chmod(struct gfs2_inode *ip, struct iattr *attr, char *data)
 {
+	struct inode *inode = &ip->i_inode;
 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
 	struct gfs2_ea_location el;
 	struct buffer_head *dibh;
@@ -1321,14 +1322,25 @@ int gfs2_xattr_acl_chmod(struct gfs2_inode *ip, struct iattr *attr, char *data)
 		return error;
 
 	error = gfs2_meta_inode_buffer(ip, &dibh);
-	if (!error) {
-		error = inode_setattr(&ip->i_inode, attr);
-		gfs2_assert_warn(GFS2_SB(&ip->i_inode), !error);
-		gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-		gfs2_dinode_out(ip, dibh->b_data);
-		brelse(dibh);
+	if (error)
+		goto out_trans_end;
+
+	if ((attr->ia_valid & ATTR_SIZE) &&
+	    attr->ia_size != i_size_read(inode)) {
+		int error;
+
+		error = vmtruncate(inode, attr->ia_size);
+		gfs2_assert_warn(GFS2_SB(inode), !error);
 	}
 
+	setattr_copy(inode, attr);
+	mark_inode_dirty(inode);
+
+	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+	gfs2_dinode_out(ip, dibh->b_data);
+	brelse(dibh);
+
+out_trans_end:
 	gfs2_trans_end(sdp);
 	return error;
 }

fs/hfs/hfs_fs.h

@@ -193,7 +193,7 @@ extern int hfs_inode_setattr(struct dentry *, struct iattr *);
 extern void hfs_inode_read_fork(struct inode *inode, struct hfs_extent *ext,
 			__be32 log_size, __be32 phys_size, u32 clump_size);
 extern struct inode *hfs_iget(struct super_block *, struct hfs_cat_key *, hfs_cat_rec *);
-extern void hfs_clear_inode(struct inode *);
+extern void hfs_evict_inode(struct inode *);
 extern void hfs_delete_inode(struct inode *);
 
 /* attr.c */

fs/hfs/inode.c

@@ -39,10 +39,19 @@ static int hfs_write_begin(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned flags,
 			struct page **pagep, void **fsdata)
 {
+	int ret;
+
 	*pagep = NULL;
-	return cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+	ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
 				hfs_get_block,
 				&HFS_I(mapping->host)->phys_size);
+	if (unlikely(ret)) {
+		loff_t isize = mapping->host->i_size;
+		if (pos + len > isize)
+			vmtruncate(mapping->host, isize);
+	}
+
+	return ret;
 }
 
 static sector_t hfs_bmap(struct address_space *mapping, sector_t block)
@@ -112,9 +121,24 @@ static ssize_t hfs_direct_IO(int rw, struct kiocb *iocb,
 {
 	struct file *file = iocb->ki_filp;
 	struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
+	ssize_t ret;
 
-	return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
+	ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
 				  offset, nr_segs, hfs_get_block, NULL);
+
+	/*
+	 * In case of error extending write may have instantiated a few
+	 * blocks outside i_size. Trim these off again.
+	 */
+	if (unlikely((rw & WRITE) && ret < 0)) {
+		loff_t isize = i_size_read(inode);
+		loff_t end = offset + iov_length(iov, nr_segs);
+
+		if (end > isize)
+			vmtruncate(inode, isize);
+	}
+
+	return ret;
 }
 
 static int hfs_writepages(struct address_space *mapping,
@@ -507,8 +531,10 @@ out:
 	return NULL;
 }
 
-void hfs_clear_inode(struct inode *inode)
+void hfs_evict_inode(struct inode *inode)
 {
+	truncate_inode_pages(&inode->i_data, 0);
+	end_writeback(inode);
 	if (HFS_IS_RSRC(inode) && HFS_I(inode)->rsrc_inode) {
 		HFS_I(HFS_I(inode)->rsrc_inode)->rsrc_inode = NULL;
 		iput(HFS_I(inode)->rsrc_inode);
@@ -588,13 +614,43 @@ int hfs_inode_setattr(struct dentry *dentry, struct iattr * attr)
 			attr->ia_mode = inode->i_mode & ~S_IWUGO;
 		attr->ia_mode &= S_ISDIR(inode->i_mode) ? ~hsb->s_dir_umask: ~hsb->s_file_umask;
 	}
-	error = inode_setattr(inode, attr);
-	if (error)
-		return error;
 
+	if ((attr->ia_valid & ATTR_SIZE) &&
+	    attr->ia_size != i_size_read(inode)) {
+		error = vmtruncate(inode, attr->ia_size);
+		if (error)
+			return error;
+	}
+
+	setattr_copy(inode, attr);
+	mark_inode_dirty(inode);
 	return 0;
 }
 
+static int hfs_file_fsync(struct file *filp, int datasync)
+{
+	struct inode *inode = filp->f_mapping->host;
+	struct super_block * sb;
+	int ret, err;
+
+	/* sync the inode to buffers */
+	ret = write_inode_now(inode, 0);
+
+	/* sync the superblock to buffers */
+	sb = inode->i_sb;
+	if (sb->s_dirt) {
+		lock_super(sb);
+		sb->s_dirt = 0;
+		if (!(sb->s_flags & MS_RDONLY))
+			hfs_mdb_commit(sb);
+		unlock_super(sb);
+	}
+	/* .. finally sync the buffers to disk */
+	err = sync_blockdev(sb->s_bdev);
+	if (!ret)
+		ret = err;
+	return ret;
+}
 
 static const struct file_operations hfs_file_operations = {
 	.llseek		= generic_file_llseek,
@@ -604,7 +660,7 @@ static const struct file_operations hfs_file_operations = {
 	.aio_write	= generic_file_aio_write,
 	.mmap		= generic_file_mmap,
 	.splice_read	= generic_file_splice_read,
-	.fsync		= file_fsync,
+	.fsync		= hfs_file_fsync,
 	.open		= hfs_file_open,
 	.release	= hfs_file_release,
 };

fs/hfs/super.c

@@ -181,7 +181,7 @@ static const struct super_operations hfs_super_operations = {
 	.alloc_inode	= hfs_alloc_inode,
 	.destroy_inode	= hfs_destroy_inode,
 	.write_inode	= hfs_write_inode,
-	.clear_inode	= hfs_clear_inode,
+	.evict_inode	= hfs_evict_inode,
 	.put_super	= hfs_put_super,
 	.write_super	= hfs_write_super,
 	.sync_fs	= hfs_sync_fs,

fs/hfsplus/hfsplus_fs.h

@@ -351,6 +351,7 @@ int hfsplus_show_options(struct seq_file *, struct vfsmount *);
 
 /* super.c */
 struct inode *hfsplus_iget(struct super_block *, unsigned long);
+int hfsplus_sync_fs(struct super_block *sb, int wait);
 
 /* tables.c */
 extern u16 hfsplus_case_fold_table[];

fs/hfsplus/inode.c

@@ -31,10 +31,19 @@ static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned flags,
 			struct page **pagep, void **fsdata)
 {
+	int ret;
+
 	*pagep = NULL;
-	return cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+	ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
 				hfsplus_get_block,
 				&HFSPLUS_I(mapping->host).phys_size);
+	if (unlikely(ret)) {
+		loff_t isize = mapping->host->i_size;
+		if (pos + len > isize)
+			vmtruncate(mapping->host, isize);
+	}
+
+	return ret;
 }
 
 static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
@@ -105,9 +114,24 @@ static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb,
 {
 	struct file *file = iocb->ki_filp;
 	struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
+	ssize_t ret;
 
-	return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
+	ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
 				  offset, nr_segs, hfsplus_get_block, NULL);
+
+	/*
+	 * In case of error extending write may have instantiated a few
+	 * blocks outside i_size. Trim these off again.
+	 */
+	if (unlikely((rw & WRITE) && ret < 0)) {
+		loff_t isize = i_size_read(inode);
+		loff_t end = offset + iov_length(iov, nr_segs);
+
+		if (end > isize)
+			vmtruncate(inode, isize);
+	}
+
+	return ret;
 }
 
 static int hfsplus_writepages(struct address_space *mapping,
@@ -266,9 +290,56 @@ static int hfsplus_file_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
+static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
+{
+	struct inode *inode = dentry->d_inode;
+	int error;
+
+	error = inode_change_ok(inode, attr);
+	if (error)
+		return error;
+
+	if ((attr->ia_valid & ATTR_SIZE) &&
+	    attr->ia_size != i_size_read(inode)) {
+		error = vmtruncate(inode, attr->ia_size);
+		if (error)
+			return error;
+	}
+
+	setattr_copy(inode, attr);
+	mark_inode_dirty(inode);
+	return 0;
+}
+
+static int hfsplus_file_fsync(struct file *filp, int datasync)
+{
+	struct inode *inode = filp->f_mapping->host;
+	struct super_block * sb;
+	int ret, err;
+
+	/* sync the inode to buffers */
+	ret = write_inode_now(inode, 0);
+
+	/* sync the superblock to buffers */
+	sb = inode->i_sb;
+	if (sb->s_dirt) {
+		if (!(sb->s_flags & MS_RDONLY))
+			hfsplus_sync_fs(sb, 1);
+		else
+			sb->s_dirt = 0;
+	}
+
+	/* .. finally sync the buffers to disk */
+	err = sync_blockdev(sb->s_bdev);
+	if (!ret)
+		ret = err;
+	return ret;
+}
+
 static const struct inode_operations hfsplus_file_inode_operations = {
 	.lookup		= hfsplus_file_lookup,
 	.truncate	= hfsplus_file_truncate,
+	.setattr	= hfsplus_setattr,
 	.setxattr	= hfsplus_setxattr,
 	.getxattr	= hfsplus_getxattr,
 	.listxattr	= hfsplus_listxattr,
@@ -282,7 +353,7 @@ static const struct file_operations hfsplus_file_operations = {
 	.aio_write	= generic_file_aio_write,
 	.mmap		= generic_file_mmap,
 	.splice_read	= generic_file_splice_read,
-	.fsync		= file_fsync,
+	.fsync		= hfsplus_file_fsync,
 	.open		= hfsplus_file_open,
 	.release	= hfsplus_file_release,
 	.unlocked_ioctl = hfsplus_ioctl,

fs/hfsplus/super.c

@@ -145,16 +145,18 @@ static int hfsplus_write_inode(struct inode *inode,
 	return ret;
 }
 
-static void hfsplus_clear_inode(struct inode *inode)
+static void hfsplus_evict_inode(struct inode *inode)
 {
-	dprint(DBG_INODE, "hfsplus_clear_inode: %lu\n", inode->i_ino);
+	dprint(DBG_INODE, "hfsplus_evict_inode: %lu\n", inode->i_ino);
+	truncate_inode_pages(&inode->i_data, 0);
+	end_writeback(inode);
 	if (HFSPLUS_IS_RSRC(inode)) {
 		HFSPLUS_I(HFSPLUS_I(inode).rsrc_inode).rsrc_inode = NULL;
 		iput(HFSPLUS_I(inode).rsrc_inode);
 	}
 }
 
-static int hfsplus_sync_fs(struct super_block *sb, int wait)
+int hfsplus_sync_fs(struct super_block *sb, int wait)
 {
 	struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr;
 
@@ -293,7 +295,7 @@ static const struct super_operations hfsplus_sops = {
 	.alloc_inode	= hfsplus_alloc_inode,
 	.destroy_inode	= hfsplus_destroy_inode,
 	.write_inode	= hfsplus_write_inode,
-	.clear_inode	= hfsplus_clear_inode,
+	.evict_inode	= hfsplus_evict_inode,
 	.put_super	= hfsplus_put_super,
 	.write_super	= hfsplus_write_super,
 	.sync_fs	= hfsplus_sync_fs,

fs/hostfs/hostfs.h

@@ -53,18 +53,28 @@ struct hostfs_iattr {
 	struct timespec	ia_ctime;
 };
 
-extern int stat_file(const char *path, unsigned long long *inode_out,
-		     int *mode_out, int *nlink_out, int *uid_out, int *gid_out,
-		     unsigned long long *size_out, struct timespec *atime_out,
-		     struct timespec *mtime_out, struct timespec *ctime_out,
-		     int *blksize_out, unsigned long long *blocks_out, int fd);
+struct hostfs_stat {
+	unsigned long long ino;
+	unsigned int mode;
+	unsigned int nlink;
+	unsigned int uid;
+	unsigned int gid;
+	unsigned long long size;
+	struct timespec atime, mtime, ctime;
+	unsigned int blksize;
+	unsigned long long blocks;
+	unsigned int maj;
+	unsigned int min;
+};
+
+extern int stat_file(const char *path, struct hostfs_stat *p, int fd);
 extern int access_file(char *path, int r, int w, int x);
 extern int open_file(char *path, int r, int w, int append);
-extern int file_type(const char *path, int *maj, int *min);
 extern void *open_dir(char *path, int *err_out);
 extern char *read_dir(void *stream, unsigned long long *pos,
 		      unsigned long long *ino_out, int *len_out);
 extern void close_file(void *stream);
+extern int replace_file(int oldfd, int fd);
 extern void close_dir(void *stream);
 extern int read_file(int fd, unsigned long long *offset, char *buf, int len);
 extern int write_file(int fd, unsigned long long *offset, const char *buf,

fs/hostfs/hostfs_kern.c

@@ -14,12 +14,12 @@
 #include <linux/slab.h>
 #include <linux/seq_file.h>
 #include <linux/mount.h>
+#include <linux/namei.h>
 #include "hostfs.h"
 #include "init.h"
 #include "kern.h"
 
 struct hostfs_inode_info {
-	char *host_filename;
 	int fd;
 	fmode_t mode;
 	struct inode vfs_inode;
@@ -49,7 +49,7 @@ static int append = 0;
 
 static const struct inode_operations hostfs_iops;
 static const struct inode_operations hostfs_dir_iops;
-static const struct address_space_operations hostfs_link_aops;
+static const struct inode_operations hostfs_link_iops;
 
 #ifndef MODULE
 static int __init hostfs_args(char *options, int *add)
@@ -90,71 +90,58 @@ __uml_setup("hostfs=", hostfs_args,
 );
 #endif
 
-static char *dentry_name(struct dentry *dentry, int extra)
+static char *__dentry_name(struct dentry *dentry, char *name)
 {
-	struct dentry *parent;
-	char *root, *name;
-	int len;
-
-	len = 0;
-	parent = dentry;
-	while (parent->d_parent != parent) {
-		len += parent->d_name.len + 1;
-		parent = parent->d_parent;
-	}
+	char *p = __dentry_path(dentry, name, PATH_MAX);
+	char *root;
+	size_t len;
 
-	root = HOSTFS_I(parent->d_inode)->host_filename;
-	len += strlen(root);
-	name = kmalloc(len + extra + 1, GFP_KERNEL);
-	if (name == NULL)
-		return NULL;
+	spin_unlock(&dcache_lock);
 
-	name[len] = '\0';
-	parent = dentry;
-	while (parent->d_parent != parent) {
-		len -= parent->d_name.len + 1;
-		name[len] = '/';
-		strncpy(&name[len + 1], parent->d_name.name,
-			parent->d_name.len);
-		parent = parent->d_parent;
+	root = dentry->d_sb->s_fs_info;
+	len = strlen(root);
+	if (IS_ERR(p)) {
+		__putname(name);
+		return NULL;
+	}
+	strncpy(name, root, PATH_MAX);
+	if (len > p - name) {
+		__putname(name);
+		return NULL;
+	}
+	if (p > name + len) {
+		char *s = name + len;
+		while ((*s++ = *p++) != '\0')
+			;
 	}
-	strncpy(name, root, strlen(root));
 	return name;
 }
 
-static char *inode_name(struct inode *ino, int extra)
+static char *dentry_name(struct dentry *dentry)
 {
-	struct dentry *dentry;
+	char *name = __getname();
+	if (!name)
+		return NULL;
 
-	dentry = list_entry(ino->i_dentry.next, struct dentry, d_alias);
-	return dentry_name(dentry, extra);
+	spin_lock(&dcache_lock);
+	return __dentry_name(dentry, name); /* will unlock */
 }
 
-static int read_name(struct inode *ino, char *name)
+static char *inode_name(struct inode *ino)
 {
-	/*
-	 * The non-int inode fields are copied into ints by stat_file and
-	 * then copied into the inode because passing the actual pointers
-	 * in and having them treated as int * breaks on big-endian machines
-	 */
-	int err;
-	int i_mode, i_nlink, i_blksize;
-	unsigned long long i_size;
-	unsigned long long i_ino;
-	unsigned long long i_blocks;
-
-	err = stat_file(name, &i_ino, &i_mode, &i_nlink, &ino->i_uid,
-			&ino->i_gid, &i_size, &ino->i_atime, &ino->i_mtime,
-			&ino->i_ctime, &i_blksize, &i_blocks, -1);
-	if (err)
-		return err;
+	struct dentry *dentry;
+	char *name = __getname();
+	if (!name)
+		return NULL;
 
-	ino->i_ino = i_ino;
-	ino->i_mode = i_mode;
-	ino->i_nlink = i_nlink;
-	ino->i_size = i_size;
-	ino->i_blocks = i_blocks;
-	return 0;
+	spin_lock(&dcache_lock);
+	if (list_empty(&ino->i_dentry)) {
+		spin_unlock(&dcache_lock);
+		__putname(name);
+		return NULL;
+	}
+	dentry = list_first_entry(&ino->i_dentry, struct dentry, d_alias);
+	return __dentry_name(dentry, name); /* will unlock */
 }
 
 static char *follow_link(char *link)
@@ -205,53 +192,11 @@ static char *follow_link(char *link)
 	return ERR_PTR(n);
 }
 
-static int hostfs_read_inode(struct inode *ino)
-{
-	char *name;
-	int err = 0;
-
-	/*
-	 * Unfortunately, we are called from iget() when we don't have a dentry
-	 * allocated yet.
-	 */
-	if (list_empty(&ino->i_dentry))
-		goto out;
-
-	err = -ENOMEM;
-	name = inode_name(ino, 0);
-	if (name == NULL)
-		goto out;
-
-	if (file_type(name, NULL, NULL) == OS_TYPE_SYMLINK) {
-		name = follow_link(name);
-		if (IS_ERR(name)) {
-			err = PTR_ERR(name);
-			goto out;
-		}
-	}
-
-	err = read_name(ino, name);
-	kfree(name);
- out:
-	return err;
-}
-
 static struct inode *hostfs_iget(struct super_block *sb)
 {
-	struct inode *inode;
-	long ret;
-
-	inode = iget_locked(sb, 0);
+	struct inode *inode = new_inode(sb);
 	if (!inode)
 		return ERR_PTR(-ENOMEM);
-	if (inode->i_state & I_NEW) {
-		ret = hostfs_read_inode(inode);
-		if (ret < 0) {
-			iget_failed(inode);
-			return ERR_PTR(ret);
-		}
-		unlock_new_inode(inode);
-	}
 	return inode;
 }
 
@@ -269,7 +214,7 @@ int hostfs_statfs(struct dentry *dentry, struct kstatfs *sf)
 	long long f_files;
 	long long f_ffree;
 
-	err = do_statfs(HOSTFS_I(dentry->d_sb->s_root->d_inode)->host_filename,
+	err = do_statfs(dentry->d_sb->s_fs_info,
 			&sf->f_bsize, &f_blocks, &f_bfree, &f_bavail, &f_files,
 			&f_ffree, &sf->f_fsid, sizeof(sf->f_fsid),
 			&sf->f_namelen, sf->f_spare);
@@ -288,47 +233,32 @@ static struct inode *hostfs_alloc_inode(struct super_block *sb)
 {
 	struct hostfs_inode_info *hi;
 
-	hi = kmalloc(sizeof(*hi), GFP_KERNEL);
+	hi = kzalloc(sizeof(*hi), GFP_KERNEL);
 	if (hi == NULL)
 		return NULL;
-
-	*hi = ((struct hostfs_inode_info) { .host_filename	= NULL,
-					    .fd			= -1,
-					    .mode		= 0 });
+	hi->fd = -1;
 	inode_init_once(&hi->vfs_inode);
 	return &hi->vfs_inode;
 }
 
-static void hostfs_delete_inode(struct inode *inode)
+static void hostfs_evict_inode(struct inode *inode)
 {
 	truncate_inode_pages(&inode->i_data, 0);
+	end_writeback(inode);
 	if (HOSTFS_I(inode)->fd != -1) {
 		close_file(&HOSTFS_I(inode)->fd);
 		HOSTFS_I(inode)->fd = -1;
 	}
-	clear_inode(inode);
 }
 
 static void hostfs_destroy_inode(struct inode *inode)
 {
-	kfree(HOSTFS_I(inode)->host_filename);
-
-	/*
-	 * XXX: This should not happen, probably. The check is here for
-	 * additional safety.
-	 */
-	if (HOSTFS_I(inode)->fd != -1) {
-		close_file(&HOSTFS_I(inode)->fd);
-		printk(KERN_DEBUG "Closing host fd in .destroy_inode\n");
-	}
-
 	kfree(HOSTFS_I(inode));
 }
 
 static int hostfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
 {
-	struct inode *root = vfs->mnt_sb->s_root->d_inode;
-	const char *root_path = HOSTFS_I(root)->host_filename;
+	const char *root_path = vfs->mnt_sb->s_fs_info;
 	size_t offset = strlen(root_ino) + 1;
 
 	if (strlen(root_path) > offset)
@@ -339,9 +269,8 @@ static int hostfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
 
 static const struct super_operations hostfs_sbops = {
 	.alloc_inode	= hostfs_alloc_inode,
-	.drop_inode	= generic_delete_inode,
-	.delete_inode   = hostfs_delete_inode,
 	.destroy_inode	= hostfs_destroy_inode,
+	.evict_inode	= hostfs_evict_inode,
 	.statfs		= hostfs_statfs,
 	.show_options	= hostfs_show_options,
 };
@@ -353,11 +282,11 @@ int hostfs_readdir(struct file *file, void *ent, filldir_t filldir)
 	unsigned long long next, ino;
 	int error, len;
 
-	name = dentry_name(file->f_path.dentry, 0);
+	name = dentry_name(file->f_path.dentry);
 	if (name == NULL)
 		return -ENOMEM;
 	dir = open_dir(name, &error);
-	kfree(name);
+	__putname(name);
 	if (dir == NULL)
 		return -error;
 	next = file->f_pos;
@@ -373,40 +302,59 @@ int hostfs_readdir(struct file *file, void *ent, filldir_t filldir)
 
 int hostfs_file_open(struct inode *ino, struct file *file)
 {
+	static DEFINE_MUTEX(open_mutex);
 	char *name;
 	fmode_t mode = 0;
+	int err;
 	int r = 0, w = 0, fd;
 
 	mode = file->f_mode & (FMODE_READ | FMODE_WRITE);
 	if ((mode & HOSTFS_I(ino)->mode) == mode)
 		return 0;
 
-	/*
-	 * The file may already have been opened, but with the wrong access,
-	 * so this resets things and reopens the file with the new access.
-	 */
-	if (HOSTFS_I(ino)->fd != -1) {
-		close_file(&HOSTFS_I(ino)->fd);
-		HOSTFS_I(ino)->fd = -1;
-	}
+	mode |= HOSTFS_I(ino)->mode;
 
-	HOSTFS_I(ino)->mode |= mode;
-	if (HOSTFS_I(ino)->mode & FMODE_READ)
+retry:
+	if (mode & FMODE_READ)
 		r = 1;
-	if (HOSTFS_I(ino)->mode & FMODE_WRITE)
+	if (mode & FMODE_WRITE)
 		w = 1;
 	if (w)
 		r = 1;
 
-	name = dentry_name(file->f_path.dentry, 0);
+	name = dentry_name(file->f_path.dentry);
 	if (name == NULL)
 		return -ENOMEM;
 
 	fd = open_file(name, r, w, append);
-	kfree(name);
+	__putname(name);
 	if (fd < 0)
 		return fd;
-	FILE_HOSTFS_I(file)->fd = fd;
+
+	mutex_lock(&open_mutex);
+	/* somebody else had handled it first? */
+	if ((mode & HOSTFS_I(ino)->mode) == mode) {
+		mutex_unlock(&open_mutex);
+		return 0;
+	}
+	if ((mode | HOSTFS_I(ino)->mode) != mode) {
+		mode |= HOSTFS_I(ino)->mode;
+		mutex_unlock(&open_mutex);
+		close_file(&fd);
+		goto retry;
+	}
+	if (HOSTFS_I(ino)->fd == -1) {
+		HOSTFS_I(ino)->fd = fd;
+	} else {
+		err = replace_file(fd, HOSTFS_I(ino)->fd);
+		close_file(&fd);
+		if (err < 0) {
+			mutex_unlock(&open_mutex);
+			return err;
+		}
+	}
+	HOSTFS_I(ino)->mode = mode;
+	mutex_unlock(&open_mutex);
 
 	return 0;
 }
@@ -544,54 +492,50 @@ static const struct address_space_operations hostfs_aops = {
 	.write_end	= hostfs_write_end,
 };
 
-static int init_inode(struct inode *inode, struct dentry *dentry)
+static int read_name(struct inode *ino, char *name)
 {
-	char *name;
-	int type, err = -ENOMEM;
-	int maj, min;
-	dev_t rdev = 0;
+	dev_t rdev;
+	struct hostfs_stat st;
+	int err = stat_file(name, &st, -1);
+	if (err)
+		return err;
 
-	if (dentry) {
-		name = dentry_name(dentry, 0);
-		if (name == NULL)
-			goto out;
-		type = file_type(name, &maj, &min);
-		/* Reencode maj and min with the kernel encoding.*/
-		rdev = MKDEV(maj, min);
-		kfree(name);
-	}
-	else type = OS_TYPE_DIR;
+	/* Reencode maj and min with the kernel encoding.*/
+	rdev = MKDEV(st.maj, st.min);
 
-	err = 0;
-	if (type == OS_TYPE_SYMLINK)
-		inode->i_op = &page_symlink_inode_operations;
-	else if (type == OS_TYPE_DIR)
-		inode->i_op = &hostfs_dir_iops;
-	else inode->i_op = &hostfs_iops;
-
-	if (type == OS_TYPE_DIR) inode->i_fop = &hostfs_dir_fops;
-	else inode->i_fop = &hostfs_file_fops;
-
-	if (type == OS_TYPE_SYMLINK)
-		inode->i_mapping->a_ops = &hostfs_link_aops;
-	else inode->i_mapping->a_ops = &hostfs_aops;
-
-	switch (type) {
-	case OS_TYPE_CHARDEV:
-		init_special_inode(inode, S_IFCHR, rdev);
+	switch (st.mode & S_IFMT) {
+	case S_IFLNK:
+		ino->i_op = &hostfs_link_iops;
 		break;
-	case OS_TYPE_BLOCKDEV:
-		init_special_inode(inode, S_IFBLK, rdev);
+	case S_IFDIR:
+		ino->i_op = &hostfs_dir_iops;
+		ino->i_fop = &hostfs_dir_fops;
 		break;
-	case OS_TYPE_FIFO:
-		init_special_inode(inode, S_IFIFO, 0);
+	case S_IFCHR:
+	case S_IFBLK:
+	case S_IFIFO:
+	case S_IFSOCK:
+		init_special_inode(ino, st.mode & S_IFMT, rdev);
+		ino->i_op = &hostfs_iops;
 		break;
-	case OS_TYPE_SOCK:
-		init_special_inode(inode, S_IFSOCK, 0);
-		break;
-	}
- out:
-	return err;
+
+	default:
+		ino->i_op = &hostfs_iops;
+		ino->i_fop = &hostfs_file_fops;
+		ino->i_mapping->a_ops = &hostfs_aops;
+	}
+
+	ino->i_ino = st.ino;
+	ino->i_mode = st.mode;
+	ino->i_nlink = st.nlink;
+	ino->i_uid = st.uid;
+	ino->i_gid = st.gid;
+	ino->i_atime = st.atime;
+	ino->i_mtime = st.mtime;
+	ino->i_ctime = st.ctime;
+	ino->i_size = st.size;
+	ino->i_blocks = st.blocks;
+	return 0;
 }
 
 int hostfs_create(struct inode *dir, struct dentry *dentry, int mode,
@@ -607,12 +551,8 @@ int hostfs_create(struct inode *dir, struct dentry *dentry, int mode,
 		goto out;
 	}
 
-	error = init_inode(inode, dentry);
-	if (error)
-		goto out_put;
-
 	error = -ENOMEM;
-	name = dentry_name(dentry, 0);
+	name = dentry_name(dentry);
 	if (name == NULL)
 		goto out_put;
 
@@ -622,9 +562,10 @@ int hostfs_create(struct inode *dir, struct dentry *dentry, int mode,
 			 mode & S_IROTH, mode & S_IWOTH, mode & S_IXOTH);
 	if (fd < 0)
 		error = fd;
-	else error = read_name(inode, name);
+	else
+		error = read_name(inode, name);
 
-	kfree(name);
+	__putname(name);
 	if (error)
 		goto out_put;
 
@@ -652,17 +593,14 @@ struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry,
 		goto out;
 	}
 
-	err = init_inode(inode, dentry);
-	if (err)
-		goto out_put;
-
 	err = -ENOMEM;
-	name = dentry_name(dentry, 0);
+	name = dentry_name(dentry);
 	if (name == NULL)
 		goto out_put;
 
 	err = read_name(inode, name);
-	kfree(name);
+
+	__putname(name);
 	if (err == -ENOENT) {
 		iput(inode);
 		inode = NULL;
@@ -680,36 +618,21 @@ struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry,
 	return ERR_PTR(err);
 }
 
-static char *inode_dentry_name(struct inode *ino, struct dentry *dentry)
-{
-	char *file;
-	int len;
-
-	file = inode_name(ino, dentry->d_name.len + 1);
-	if (file == NULL)
-		return NULL;
-	strcat(file, "/");
-	len = strlen(file);
-	strncat(file, dentry->d_name.name, dentry->d_name.len);
-	file[len + dentry->d_name.len] = '\0';
-	return file;
-}
-
 int hostfs_link(struct dentry *to, struct inode *ino, struct dentry *from)
 {
 	char *from_name, *to_name;
 	int err;
 
-	if ((from_name = inode_dentry_name(ino, from)) == NULL)
+	if ((from_name = dentry_name(from)) == NULL)
 		return -ENOMEM;
-	to_name = dentry_name(to, 0);
+	to_name = dentry_name(to);
 	if (to_name == NULL) {
-		kfree(from_name);
+		__putname(from_name);
 		return -ENOMEM;
 	}
 	err = link_file(to_name, from_name);
-	kfree(from_name);
-	kfree(to_name);
+	__putname(from_name);
+	__putname(to_name);
 	return err;
 }
 
@@ -718,13 +641,14 @@ int hostfs_unlink(struct inode *ino, struct dentry *dentry)
 	char *file;
 	int err;
 
-	if ((file = inode_dentry_name(ino, dentry)) == NULL)
-		return -ENOMEM;
 	if (append)
 		return -EPERM;
 
+	if ((file = dentry_name(dentry)) == NULL)
+		return -ENOMEM;
+
 	err = unlink_file(file);
-	kfree(file);
+	__putname(file);
 	return err;
 }
 
@@ -733,10 +657,10 @@ int hostfs_symlink(struct inode *ino, struct dentry *dentry, const char *to)
 	char *file;
 	int err;
 
-	if ((file = inode_dentry_name(ino, dentry)) == NULL)
+	if ((file = dentry_name(dentry)) == NULL)
 		return -ENOMEM;
 	err = make_symlink(file, to);
-	kfree(file);
+	__putname(file);
 	return err;
 }
 
@@ -745,10 +669,10 @@ int hostfs_mkdir(struct inode *ino, struct dentry *dentry, int mode)
 	char *file;
 	int err;
 
-	if ((file = inode_dentry_name(ino, dentry)) == NULL)
+	if ((file = dentry_name(dentry)) == NULL)
 		return -ENOMEM;
 	err = do_mkdir(file, mode);
-	kfree(file);
+	__putname(file);
 	return err;
 }
 
@@ -757,10 +681,10 @@ int hostfs_rmdir(struct inode *ino, struct dentry *dentry)
 	char *file;
 	int err;
 
-	if ((file = inode_dentry_name(ino, dentry)) == NULL)
+	if ((file = dentry_name(dentry)) == NULL)
 		return -ENOMEM;
 	err = do_rmdir(file);
-	kfree(file);
+	__putname(file);
 	return err;
 }
 
@@ -776,22 +700,20 @@ int hostfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
 		goto out;
 	}
 
-	err = init_inode(inode, dentry);
-	if (err)
-		goto out_put;
-
 	err = -ENOMEM;
-	name = dentry_name(dentry, 0);
+	name = dentry_name(dentry);
 	if (name == NULL)
 		goto out_put;
 
 	init_special_inode(inode, mode, dev);
 	err = do_mknod(name, mode, MAJOR(dev), MINOR(dev));
-	if (err)
+	if (!err)
 		goto out_free;
 
 	err = read_name(inode, name);
-	kfree(name);
+	__putname(name);
+	if (err)
+		goto out_put;
 	if (err)
 		goto out_put;
 
@@ -799,7 +721,7 @@ int hostfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
 	return 0;
 
  out_free:
-	kfree(name);
+	__putname(name);
  out_put:
 	iput(inode);
  out:
@@ -812,15 +734,15 @@ int hostfs_rename(struct inode *from_ino, struct dentry *from,
 	char *from_name, *to_name;
 	int err;
 
-	if ((from_name = inode_dentry_name(from_ino, from)) == NULL)
+	if ((from_name = dentry_name(from)) == NULL)
 		return -ENOMEM;
-	if ((to_name = inode_dentry_name(to_ino, to)) == NULL) {
-		kfree(from_name);
+	if ((to_name = dentry_name(to)) == NULL) {
+		__putname(from_name);
 		return -ENOMEM;
 	}
 	err = rename_file(from_name, to_name);
-	kfree(from_name);
-	kfree(to_name);
+	__putname(from_name);
+	__putname(to_name);
 	return err;
 }
 
@@ -832,7 +754,7 @@ int hostfs_permission(struct inode *ino, int desired)
 	if (desired & MAY_READ) r = 1;
 	if (desired & MAY_WRITE) w = 1;
 	if (desired & MAY_EXEC) x = 1;
-	name = inode_name(ino, 0);
+	name = inode_name(ino);
 	if (name == NULL)
 		return -ENOMEM;
 
@@ -841,7 +763,7 @@ int hostfs_permission(struct inode *ino, int desired)
 		err = 0;
 	else
 		err = access_file(name, r, w, x);
-	kfree(name);
+	__putname(name);
 	if (!err)
 		err = generic_permission(ino, desired, NULL);
 	return err;
@@ -849,13 +771,14 @@ int hostfs_permission(struct inode *ino, int desired)
 
 int hostfs_setattr(struct dentry *dentry, struct iattr *attr)
 {
+	struct inode *inode = dentry->d_inode;
 	struct hostfs_iattr attrs;
 	char *name;
 	int err;
 
-	int fd = HOSTFS_I(dentry->d_inode)->fd;
+	int fd = HOSTFS_I(inode)->fd;
 
-	err = inode_change_ok(dentry->d_inode, attr);
+	err = inode_change_ok(inode, attr);
 	if (err)
 		return err;
 
@@ -897,15 +820,26 @@ int hostfs_setattr(struct dentry *dentry, struct iattr *attr)
 	if (attr->ia_valid & ATTR_MTIME_SET) {
 		attrs.ia_valid |= HOSTFS_ATTR_MTIME_SET;
 	}
-	name = dentry_name(dentry, 0);
+	name = dentry_name(dentry);
 	if (name == NULL)
 		return -ENOMEM;
 	err = set_attr(name, &attrs, fd);
-	kfree(name);
+	__putname(name);
 	if (err)
 		return err;
 
-	return inode_setattr(dentry->d_inode, attr);
+	if ((attr->ia_valid & ATTR_SIZE) &&
+	    attr->ia_size != i_size_read(inode)) {
+		int error;
+
+		error = vmtruncate(inode, attr->ia_size);
+		if (err)
+			return err;
+	}
+
+	setattr_copy(inode, attr);
+	mark_inode_dirty(inode);
+	return 0;
 }
 
 static const struct inode_operations hostfs_iops = {
@@ -935,32 +869,41 @@ static const struct inode_operations hostfs_dir_iops = {
 	.setattr	= hostfs_setattr,
 };
 
-int hostfs_link_readpage(struct file *file, struct page *page)
-{
-	char *buffer, *name;
-	int err;
-
-	buffer = kmap(page);
-	name = inode_name(page->mapping->host, 0);
-	if (name == NULL)
-		return -ENOMEM;
-	err = hostfs_do_readlink(name, buffer, PAGE_CACHE_SIZE);
-	kfree(name);
-	if (err == PAGE_CACHE_SIZE)
-		err = -E2BIG;
-	else if (err > 0) {
-		flush_dcache_page(page);
-		SetPageUptodate(page);
-		if (PageError(page)) ClearPageError(page);
-		err = 0;
+static void *hostfs_follow_link(struct dentry *dentry, struct nameidata *nd)
+{
+	char *link = __getname();
+	if (link) {
+		char *path = dentry_name(dentry);
+		int err = -ENOMEM;
+		if (path) {
+			int err = hostfs_do_readlink(path, link, PATH_MAX);
+			if (err == PATH_MAX)
+				err = -E2BIG;
+			__putname(path);
+		}
+		if (err < 0) {
+			__putname(link);
+			link = ERR_PTR(err);
+		}
+	} else {
+		link = ERR_PTR(-ENOMEM);
 	}
-	kunmap(page);
-	unlock_page(page);
-	return err;
+
+	nd_set_link(nd, link);
+	return NULL;
 }
 
-static const struct address_space_operations hostfs_link_aops = {
-	.readpage	= hostfs_link_readpage,
+static void hostfs_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie)
+{
+	char *s = nd_get_link(nd);
+	if (!IS_ERR(s))
+		__putname(s);
+}
+
+static const struct inode_operations hostfs_link_iops = {
+	.readlink	= generic_readlink,
+	.follow_link	= hostfs_follow_link,
+	.put_link	= hostfs_put_link,
 };
 
 static int hostfs_fill_sb_common(struct super_block *sb, void *d, int silent)
@@ -980,49 +923,41 @@ static int hostfs_fill_sb_common(struct super_block *sb, void *d, int silent)
 		req_root = "";
 
 	err = -ENOMEM;
-	host_root_path = kmalloc(strlen(root_ino) + 1
-				 + strlen(req_root) + 1, GFP_KERNEL);
+	sb->s_fs_info = host_root_path =
+		kmalloc(strlen(root_ino) + strlen(req_root) + 2, GFP_KERNEL);
 	if (host_root_path == NULL)
 		goto out;
 
 	sprintf(host_root_path, "%s/%s", root_ino, req_root);
 
-	root_inode = hostfs_iget(sb);
-	if (IS_ERR(root_inode)) {
-		err = PTR_ERR(root_inode);
-		goto out_free;
-	}
+	root_inode = new_inode(sb);
+	if (!root_inode)
+		goto out;
 
-	err = init_inode(root_inode, NULL);
+	err = read_name(root_inode, host_root_path);
 	if (err)
 		goto out_put;
 
-	HOSTFS_I(root_inode)->host_filename = host_root_path;
-	/*
-	 * Avoid that in the error path, iput(root_inode) frees again
-	 * host_root_path through hostfs_destroy_inode!
-	 */
-	host_root_path = NULL;
+	if (S_ISLNK(root_inode->i_mode)) {
+		char *name = follow_link(host_root_path);
+		if (IS_ERR(name))
+			err = PTR_ERR(name);
+		else
+			err = read_name(root_inode, name);
+		kfree(name);
+		if (err)
+			goto out_put;
+	}
 
 	err = -ENOMEM;
 	sb->s_root = d_alloc_root(root_inode);
 	if (sb->s_root == NULL)
 		goto out_put;
 
-	err = hostfs_read_inode(root_inode);
-	if (err) {
-		/* No iput in this case because the dput does that for us */
-		dput(sb->s_root);
-		sb->s_root = NULL;
-		goto out;
-	}
-
 	return 0;
 
 out_put:
 	iput(root_inode);
-out_free:
-	kfree(host_root_path);
 out:
 	return err;
 }
@@ -1034,11 +969,17 @@ static int hostfs_read_sb(struct file_system_type *type,
 	return get_sb_nodev(type, flags, data, hostfs_fill_sb_common, mnt);
 }
 
+static void hostfs_kill_sb(struct super_block *s)
+{
+	kill_anon_super(s);
+	kfree(s->s_fs_info);
+}
+
 static struct file_system_type hostfs_type = {
 	.owner 		= THIS_MODULE,
 	.name 		= "hostfs",
 	.get_sb 	= hostfs_read_sb,
-	.kill_sb	= kill_anon_super,
+	.kill_sb	= hostfs_kill_sb,
 	.fs_flags 	= 0,
 };
 

fs/hostfs/hostfs_user.c

@@ -19,11 +19,27 @@
 #include "user.h"
 #include <utime.h>
 
-int stat_file(const char *path, unsigned long long *inode_out, int *mode_out,
-	      int *nlink_out, int *uid_out, int *gid_out,
-	      unsigned long long *size_out, struct timespec *atime_out,
-	      struct timespec *mtime_out, struct timespec *ctime_out,
-	      int *blksize_out, unsigned long long *blocks_out, int fd)
+static void stat64_to_hostfs(const struct stat64 *buf, struct hostfs_stat *p)
+{
+	p->ino = buf->st_ino;
+	p->mode = buf->st_mode;
+	p->nlink = buf->st_nlink;
+	p->uid = buf->st_uid;
+	p->gid = buf->st_gid;
+	p->size = buf->st_size;
+	p->atime.tv_sec = buf->st_atime;
+	p->atime.tv_nsec = 0;
+	p->ctime.tv_sec = buf->st_ctime;
+	p->ctime.tv_nsec = 0;
+	p->mtime.tv_sec = buf->st_mtime;
+	p->mtime.tv_nsec = 0;
+	p->blksize = buf->st_blksize;
+	p->blocks = buf->st_blocks;
+	p->maj = os_major(buf->st_rdev);
+	p->min = os_minor(buf->st_rdev);
+}
+
+int stat_file(const char *path, struct hostfs_stat *p, int fd)
 {
 	struct stat64 buf;
 
@@ -33,68 +49,10 @@ int stat_file(const char *path, unsigned long long *inode_out, int *mode_out,
 	} else if (lstat64(path, &buf) < 0) {
 		return -errno;
 	}
-
-	if (inode_out != NULL)
-		*inode_out = buf.st_ino;
-	if (mode_out != NULL)
-		*mode_out = buf.st_mode;
-	if (nlink_out != NULL)
-		*nlink_out = buf.st_nlink;
-	if (uid_out != NULL)
-		*uid_out = buf.st_uid;
-	if (gid_out != NULL)
-		*gid_out = buf.st_gid;
-	if (size_out != NULL)
-		*size_out = buf.st_size;
-	if (atime_out != NULL) {
-		atime_out->tv_sec = buf.st_atime;
-		atime_out->tv_nsec = 0;
-	}
-	if (mtime_out != NULL) {
-		mtime_out->tv_sec = buf.st_mtime;
-		mtime_out->tv_nsec = 0;
-	}
-	if (ctime_out != NULL) {
-		ctime_out->tv_sec = buf.st_ctime;
-		ctime_out->tv_nsec = 0;
-	}
-	if (blksize_out != NULL)
-		*blksize_out = buf.st_blksize;
-	if (blocks_out != NULL)
-		*blocks_out = buf.st_blocks;
+	stat64_to_hostfs(&buf, p);
 	return 0;
 }
 
-int file_type(const char *path, int *maj, int *min)
-{
- 	struct stat64 buf;
-
-	if (lstat64(path, &buf) < 0)
-		return -errno;
-	/*
-	 * We cannot pass rdev as is because glibc and the kernel disagree
-	 * about its definition.
-	 */
-	if (maj != NULL)
-		*maj = major(buf.st_rdev);
-	if (min != NULL)
-		*min = minor(buf.st_rdev);
-
-	if (S_ISDIR(buf.st_mode))
-		return OS_TYPE_DIR;
-	else if (S_ISLNK(buf.st_mode))
-		return OS_TYPE_SYMLINK;
-	else if (S_ISCHR(buf.st_mode))
-		return OS_TYPE_CHARDEV;
-	else if (S_ISBLK(buf.st_mode))
-		return OS_TYPE_BLOCKDEV;
-	else if (S_ISFIFO(buf.st_mode))
-		return OS_TYPE_FIFO;
-	else if (S_ISSOCK(buf.st_mode))
-		return OS_TYPE_SOCK;
-	else return OS_TYPE_FILE;
-}
-
 int access_file(char *path, int r, int w, int x)
 {
 	int mode = 0;
@@ -202,6 +160,11 @@ int fsync_file(int fd, int datasync)
 	return 0;
 }
 
+int replace_file(int oldfd, int fd)
+{
+	return dup2(oldfd, fd);
+}
+
 void close_file(void *stream)
 {
 	close(*((int *) stream));
@@ -235,8 +198,8 @@ int file_create(char *name, int ur, int uw, int ux, int gr,
 
 int set_attr(const char *file, struct hostfs_iattr *attrs, int fd)
 {
+	struct hostfs_stat st;
 	struct timeval times[2];
-	struct timespec atime_ts, mtime_ts;
 	int err, ma;
 
 	if (attrs->ia_valid & HOSTFS_ATTR_MODE) {
@@ -279,15 +242,14 @@ int set_attr(const char *file, struct hostfs_iattr *attrs, int fd)
 	 */
 	ma = (HOSTFS_ATTR_ATIME_SET | HOSTFS_ATTR_MTIME_SET);
 	if (attrs->ia_valid & ma) {
-		err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
-				&atime_ts, &mtime_ts, NULL, NULL, NULL, fd);
+		err = stat_file(file, &st, fd);
 		if (err != 0)
 			return err;
 
-		times[0].tv_sec = atime_ts.tv_sec;
-		times[0].tv_usec = atime_ts.tv_nsec / 1000;
-		times[1].tv_sec = mtime_ts.tv_sec;
-		times[1].tv_usec = mtime_ts.tv_nsec / 1000;
+		times[0].tv_sec = st.atime.tv_sec;
+		times[0].tv_usec = st.atime.tv_nsec / 1000;
+		times[1].tv_sec = st.mtime.tv_sec;
+		times[1].tv_usec = st.mtime.tv_nsec / 1000;
 
 		if (attrs->ia_valid & HOSTFS_ATTR_ATIME_SET) {
 			times[0].tv_sec = attrs->ia_atime.tv_sec;
@@ -308,9 +270,9 @@ int set_attr(const char *file, struct hostfs_iattr *attrs, int fd)
 
 	/* Note: ctime is not handled */
 	if (attrs->ia_valid & (HOSTFS_ATTR_ATIME | HOSTFS_ATTR_MTIME)) {
-		err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
-				&attrs->ia_atime, &attrs->ia_mtime, NULL,
-				NULL, NULL, fd);
+		err = stat_file(file, &st, fd);
+		attrs->ia_atime = st.atime;
+		attrs->ia_mtime = st.mtime;
 		if (err != 0)
 			return err;
 	}
@@ -361,7 +323,7 @@ int do_mknod(const char *file, int mode, unsigned int major, unsigned int minor)
 {
 	int err;
 
-	err = mknod(file, mode, makedev(major, minor));
+	err = mknod(file, mode, os_makedev(major, minor));
 	if (err)
 		return -errno;
 	return 0;

fs/hpfs/file.c

@@ -97,10 +97,19 @@ static int hpfs_write_begin(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned flags,
 			struct page **pagep, void **fsdata)
 {
+	int ret;
+
 	*pagep = NULL;
-	return cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+	ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
 				hpfs_get_block,
 				&hpfs_i(mapping->host)->mmu_private);
+	if (unlikely(ret)) {
+		loff_t isize = mapping->host->i_size;
+		if (pos + len > isize)
+			vmtruncate(mapping->host, isize);
+	}
+
+	return ret;
 }
 
 static sector_t _hpfs_bmap(struct address_space *mapping, sector_t block)

fs/hpfs/hpfs_fn.h

@@ -281,7 +281,7 @@ void hpfs_write_inode(struct inode *);
 void hpfs_write_inode_nolock(struct inode *);
 int hpfs_setattr(struct dentry *, struct iattr *);
 void hpfs_write_if_changed(struct inode *);
-void hpfs_delete_inode(struct inode *);
+void hpfs_evict_inode(struct inode *);
 
 /* map.c */
 

fs/hpfs/inode.c

@@ -277,9 +277,15 @@ int hpfs_setattr(struct dentry *dentry, struct iattr *attr)
 	if (error)
 		goto out_unlock;
 
-	error = inode_setattr(inode, attr);
-	if (error)
-		goto out_unlock;
+	if ((attr->ia_valid & ATTR_SIZE) &&
+	    attr->ia_size != i_size_read(inode)) {
+		error = vmtruncate(inode, attr->ia_size);
+		if (error)
+			return error;
+	}
+
+	setattr_copy(inode, attr);
+	mark_inode_dirty(inode);
 
 	hpfs_write_inode(inode);
 
@@ -296,11 +302,13 @@ void hpfs_write_if_changed(struct inode *inode)
 		hpfs_write_inode(inode);
 }
 
-void hpfs_delete_inode(struct inode *inode)
+void hpfs_evict_inode(struct inode *inode)
 {
 	truncate_inode_pages(&inode->i_data, 0);
-	lock_kernel();
-	hpfs_remove_fnode(inode->i_sb, inode->i_ino);
-	unlock_kernel();
-	clear_inode(inode);
+	end_writeback(inode);
+	if (!inode->i_nlink) {
+		lock_kernel();
+		hpfs_remove_fnode(inode->i_sb, inode->i_ino);
+		unlock_kernel();
+	}
 }

fs/hpfs/super.c

@@ -450,7 +450,7 @@ static const struct super_operations hpfs_sops =
 {
 	.alloc_inode	= hpfs_alloc_inode,
 	.destroy_inode	= hpfs_destroy_inode,
-	.delete_inode	= hpfs_delete_inode,
+	.evict_inode	= hpfs_evict_inode,
 	.put_super	= hpfs_put_super,
 	.statfs		= hpfs_statfs,
 	.remount_fs	= hpfs_remount_fs,

fs/hppfs/hppfs.c

@@ -15,6 +15,7 @@
 #include <linux/slab.h>
 #include <linux/statfs.h>
 #include <linux/types.h>
+#include <linux/pid_namespace.h>
 #include <asm/uaccess.h>
 #include "os.h"
 
@@ -623,12 +624,11 @@ static struct inode *hppfs_alloc_inode(struct super_block *sb)
 	return &hi->vfs_inode;
 }
 
-void hppfs_delete_inode(struct inode *ino)
+void hppfs_evict_inode(struct inode *ino)
 {
+	end_writeback(ino);
 	dput(HPPFS_I(ino)->proc_dentry);
 	mntput(ino->i_sb->s_fs_info);
-
-	clear_inode(ino);
 }
 
 static void hppfs_destroy_inode(struct inode *inode)
@@ -639,7 +639,7 @@ static void hppfs_destroy_inode(struct inode *inode)
 static const struct super_operations hppfs_sbops = {
 	.alloc_inode	= hppfs_alloc_inode,
 	.destroy_inode	= hppfs_destroy_inode,
-	.delete_inode	= hppfs_delete_inode,
+	.evict_inode	= hppfs_evict_inode,
 	.statfs		= hppfs_statfs,
 };
 

fs/hugetlbfs/inode.c

@@ -371,27 +371,10 @@ static void truncate_hugepages(struct inode *inode, loff_t lstart)
 	hugetlb_unreserve_pages(inode, start, freed);
 }
 
-static void hugetlbfs_delete_inode(struct inode *inode)
+static void hugetlbfs_evict_inode(struct inode *inode)
 {
 	truncate_hugepages(inode, 0);
-	clear_inode(inode);
-}
-
-static void hugetlbfs_forget_inode(struct inode *inode) __releases(inode_lock)
-{
-	if (generic_detach_inode(inode)) {
-		truncate_hugepages(inode, 0);
-		clear_inode(inode);
-		destroy_inode(inode);
-	}
-}
-
-static void hugetlbfs_drop_inode(struct inode *inode)
-{
-	if (!inode->i_nlink)
-		generic_delete_inode(inode);
-	else
-		hugetlbfs_forget_inode(inode);
+	end_writeback(inode);
 }
 
 static inline void
@@ -448,19 +431,20 @@ static int hugetlbfs_setattr(struct dentry *dentry, struct iattr *attr)
 
 	error = inode_change_ok(inode, attr);
 	if (error)
-		goto out;
+		return error;
 
 	if (ia_valid & ATTR_SIZE) {
 		error = -EINVAL;
-		if (!(attr->ia_size & ~huge_page_mask(h)))
-			error = hugetlb_vmtruncate(inode, attr->ia_size);
+		if (attr->ia_size & ~huge_page_mask(h))
+			return -EINVAL;
+		error = hugetlb_vmtruncate(inode, attr->ia_size);
 		if (error)
-			goto out;
-		attr->ia_valid &= ~ATTR_SIZE;
+			return error;
 	}
-	error = inode_setattr(inode, attr);
-out:
-	return error;
+
+	setattr_copy(inode, attr);
+	mark_inode_dirty(inode);
+	return 0;
 }
 
 static struct inode *hugetlbfs_get_inode(struct super_block *sb, uid_t uid, 
@@ -712,9 +696,8 @@ static const struct inode_operations hugetlbfs_inode_operations = {
 static const struct super_operations hugetlbfs_ops = {
 	.alloc_inode    = hugetlbfs_alloc_inode,
 	.destroy_inode  = hugetlbfs_destroy_inode,
+	.evict_inode	= hugetlbfs_evict_inode,
 	.statfs		= hugetlbfs_statfs,
-	.delete_inode	= hugetlbfs_delete_inode,
-	.drop_inode	= hugetlbfs_drop_inode,
 	.put_super	= hugetlbfs_put_super,
 	.show_options	= generic_show_options,
 };

fs/inode.c

@@ -294,32 +294,34 @@ void __iget(struct inode *inode)
 	inodes_stat.nr_unused--;
 }
 
-/**
- * clear_inode - clear an inode
- * @inode: inode to clear
- *
- * This is called by the filesystem to tell us
- * that the inode is no longer useful. We just
- * terminate it with extreme prejudice.
- */
-void clear_inode(struct inode *inode)
+void end_writeback(struct inode *inode)
 {
 	might_sleep();
-	invalidate_inode_buffers(inode);
-
 	BUG_ON(inode->i_data.nrpages);
+	BUG_ON(!list_empty(&inode->i_data.private_list));
 	BUG_ON(!(inode->i_state & I_FREEING));
 	BUG_ON(inode->i_state & I_CLEAR);
 	inode_sync_wait(inode);
-	if (inode->i_sb->s_op->clear_inode)
-		inode->i_sb->s_op->clear_inode(inode);
+	inode->i_state = I_FREEING | I_CLEAR;
+}
+EXPORT_SYMBOL(end_writeback);
+
+static void evict(struct inode *inode)
+{
+	const struct super_operations *op = inode->i_sb->s_op;
+
+	if (op->evict_inode) {
+		op->evict_inode(inode);
+	} else {
+		if (inode->i_data.nrpages)
+			truncate_inode_pages(&inode->i_data, 0);
+		end_writeback(inode);
+	}
 	if (S_ISBLK(inode->i_mode) && inode->i_bdev)
 		bd_forget(inode);
 	if (S_ISCHR(inode->i_mode) && inode->i_cdev)
 		cd_forget(inode);
-	inode->i_state = I_CLEAR;
 }
-EXPORT_SYMBOL(clear_inode);
 
 /*
  * dispose_list - dispose of the contents of a local list
@@ -338,9 +340,7 @@ static void dispose_list(struct list_head *head)
 		inode = list_first_entry(head, struct inode, i_list);
 		list_del(&inode->i_list);
 
-		if (inode->i_data.nrpages)
-			truncate_inode_pages(&inode->i_data, 0);
-		clear_inode(inode);
+		evict(inode);
 
 		spin_lock(&inode_lock);
 		hlist_del_init(&inode->i_hash);
@@ -553,7 +553,7 @@ repeat:
 			continue;
 		if (!test(inode, data))
 			continue;
-		if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)) {
+		if (inode->i_state & (I_FREEING|I_WILL_FREE)) {
 			__wait_on_freeing_inode(inode);
 			goto repeat;
 		}
@@ -578,7 +578,7 @@ repeat:
 			continue;
 		if (inode->i_sb != sb)
 			continue;
-		if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)) {
+		if (inode->i_state & (I_FREEING|I_WILL_FREE)) {
 			__wait_on_freeing_inode(inode);
 			goto repeat;
 		}
@@ -840,7 +840,7 @@ EXPORT_SYMBOL(iunique);
 struct inode *igrab(struct inode *inode)
 {
 	spin_lock(&inode_lock);
-	if (!(inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)))
+	if (!(inode->i_state & (I_FREEING|I_WILL_FREE)))
 		__iget(inode);
 	else
 		/*
@@ -1089,7 +1089,7 @@ int insert_inode_locked(struct inode *inode)
 				continue;
 			if (old->i_sb != sb)
 				continue;
-			if (old->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE))
+			if (old->i_state & (I_FREEING|I_WILL_FREE))
 				continue;
 			break;
 		}
@@ -1128,7 +1128,7 @@ int insert_inode_locked4(struct inode *inode, unsigned long hashval,
 				continue;
 			if (!test(old, data))
 				continue;
-			if (old->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE))
+			if (old->i_state & (I_FREEING|I_WILL_FREE))
 				continue;
 			break;
 		}
@@ -1180,69 +1180,51 @@ void remove_inode_hash(struct inode *inode)
 }
 EXPORT_SYMBOL(remove_inode_hash);
 
+int generic_delete_inode(struct inode *inode)
+{
+	return 1;
+}
+EXPORT_SYMBOL(generic_delete_inode);
+
 /*
- * Tell the filesystem that this inode is no longer of any interest and should
- * be completely destroyed.
- *
- * We leave the inode in the inode hash table until *after* the filesystem's
- * ->delete_inode completes.  This ensures that an iget (such as nfsd might
- * instigate) will always find up-to-date information either in the hash or on
- * disk.
- *
- * I_FREEING is set so that no-one will take a new reference to the inode while
- * it is being deleted.
+ * Normal UNIX filesystem behaviour: delete the
+ * inode when the usage count drops to zero, and
+ * i_nlink is zero.
  */
-void generic_delete_inode(struct inode *inode)
+int generic_drop_inode(struct inode *inode)
 {
-	const struct super_operations *op = inode->i_sb->s_op;
-
-	list_del_init(&inode->i_list);
-	list_del_init(&inode->i_sb_list);
-	WARN_ON(inode->i_state & I_NEW);
-	inode->i_state |= I_FREEING;
-	inodes_stat.nr_inodes--;
-	spin_unlock(&inode_lock);
-
-	if (op->delete_inode) {
-		void (*delete)(struct inode *) = op->delete_inode;
-		/* Filesystems implementing their own
-		 * s_op->delete_inode are required to call
-		 * truncate_inode_pages and clear_inode()
-		 * internally */
-		delete(inode);
-	} else {
-		truncate_inode_pages(&inode->i_data, 0);
-		clear_inode(inode);
-	}
-	spin_lock(&inode_lock);
-	hlist_del_init(&inode->i_hash);
-	spin_unlock(&inode_lock);
-	wake_up_inode(inode);
-	BUG_ON(inode->i_state != I_CLEAR);
-	destroy_inode(inode);
+	return !inode->i_nlink || hlist_unhashed(&inode->i_hash);
 }
-EXPORT_SYMBOL(generic_delete_inode);
+EXPORT_SYMBOL_GPL(generic_drop_inode);
 
-/**
- *	generic_detach_inode - remove inode from inode lists
- *	@inode: inode to remove
- *
- *	Remove inode from inode lists, write it if it's dirty. This is just an
- *	internal VFS helper exported for hugetlbfs. Do not use!
+/*
+ * Called when we're dropping the last reference
+ * to an inode.
  *
- *	Returns 1 if inode should be completely destroyed.
+ * Call the FS "drop_inode()" function, defaulting to
+ * the legacy UNIX filesystem behaviour.  If it tells
+ * us to evict inode, do so.  Otherwise, retain inode
+ * in cache if fs is alive, sync and evict if fs is
+ * shutting down.
  */
-int generic_detach_inode(struct inode *inode)
+static void iput_final(struct inode *inode)
 {
 	struct super_block *sb = inode->i_sb;
+	const struct super_operations *op = inode->i_sb->s_op;
+	int drop;
 
-	if (!hlist_unhashed(&inode->i_hash)) {
+	if (op && op->drop_inode)
+		drop = op->drop_inode(inode);
+	else
+		drop = generic_drop_inode(inode);
+
+	if (!drop) {
 		if (!(inode->i_state & (I_DIRTY|I_SYNC)))
 			list_move(&inode->i_list, &inode_unused);
 		inodes_stat.nr_unused++;
 		if (sb->s_flags & MS_ACTIVE) {
 			spin_unlock(&inode_lock);
-			return 0;
+			return;
 		}
 		WARN_ON(inode->i_state & I_NEW);
 		inode->i_state |= I_WILL_FREE;
@@ -1260,56 +1242,15 @@ int generic_detach_inode(struct inode *inode)
 	inode->i_state |= I_FREEING;
 	inodes_stat.nr_inodes--;
 	spin_unlock(&inode_lock);
-	return 1;
-}
-EXPORT_SYMBOL_GPL(generic_detach_inode);
-
-static void generic_forget_inode(struct inode *inode)
-{
-	if (!generic_detach_inode(inode))
-		return;
-	if (inode->i_data.nrpages)
-		truncate_inode_pages(&inode->i_data, 0);
-	clear_inode(inode);
+	evict(inode);
+	spin_lock(&inode_lock);
+	hlist_del_init(&inode->i_hash);
+	spin_unlock(&inode_lock);
 	wake_up_inode(inode);
+	BUG_ON(inode->i_state != (I_FREEING | I_CLEAR));
 	destroy_inode(inode);
 }
 
-/*
- * Normal UNIX filesystem behaviour: delete the
- * inode when the usage count drops to zero, and
- * i_nlink is zero.
- */
-void generic_drop_inode(struct inode *inode)
-{
-	if (!inode->i_nlink)
-		generic_delete_inode(inode);
-	else
-		generic_forget_inode(inode);
-}
-EXPORT_SYMBOL_GPL(generic_drop_inode);
-
-/*
- * Called when we're dropping the last reference
- * to an inode.
- *
- * Call the FS "drop()" function, defaulting to
- * the legacy UNIX filesystem behaviour..
- *
- * NOTE! NOTE! NOTE! We're called with the inode lock
- * held, and the drop function is supposed to release
- * the lock!
- */
-static inline void iput_final(struct inode *inode)
-{
-	const struct super_operations *op = inode->i_sb->s_op;
-	void (*drop)(struct inode *) = generic_drop_inode;
-
-	if (op && op->drop_inode)
-		drop = op->drop_inode;
-	drop(inode);
-}
-
 /**
  *	iput	- put an inode
  *	@inode: inode to put
@@ -1322,7 +1263,7 @@ static inline void iput_final(struct inode *inode)
 void iput(struct inode *inode)
 {
 	if (inode) {
-		BUG_ON(inode->i_state == I_CLEAR);
+		BUG_ON(inode->i_state & I_CLEAR);
 
 		if (atomic_dec_and_lock(&inode->i_count, &inode_lock))
 			iput_final(inode);

fs/jffs2/dir.c

@@ -232,9 +232,7 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode,
 	return 0;
 
  fail:
-	make_bad_inode(inode);
-	unlock_new_inode(inode);
-	iput(inode);
+	iget_failed(inode);
 	jffs2_free_raw_inode(ri);
 	return ret;
 }
@@ -454,9 +452,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
 	return 0;
 
  fail:
-	make_bad_inode(inode);
-	unlock_new_inode(inode);
-	iput(inode);
+	iget_failed(inode);
 	return ret;
 }
 
@@ -601,9 +597,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
 	return 0;
 
  fail:
-	make_bad_inode(inode);
-	unlock_new_inode(inode);
-	iput(inode);
+	iget_failed(inode);
 	return ret;
 }
 
@@ -778,9 +772,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
 	return 0;
 
  fail:
-	make_bad_inode(inode);
-	unlock_new_inode(inode);
-	iput(inode);
+	iget_failed(inode);
 	return ret;
 }
 

fs/jffs2/fs.c

@@ -169,13 +169,13 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
 	mutex_unlock(&f->sem);
 	jffs2_complete_reservation(c);
 
-	/* We have to do the simple_setsize() without f->sem held, since
+	/* We have to do the truncate_setsize() without f->sem held, since
 	   some pages may be locked and waiting for it in readpage().
 	   We are protected from a simultaneous write() extending i_size
 	   back past iattr->ia_size, because do_truncate() holds the
 	   generic inode semaphore. */
 	if (ivalid & ATTR_SIZE && inode->i_size > iattr->ia_size) {
-		simple_setsize(inode, iattr->ia_size);
+		truncate_setsize(inode, iattr->ia_size);
 		inode->i_blocks = (inode->i_size + 511) >> 9;
 	}	
 
@@ -225,7 +225,7 @@ int jffs2_statfs(struct dentry *dentry, struct kstatfs *buf)
 }
 
 
-void jffs2_clear_inode (struct inode *inode)
+void jffs2_evict_inode (struct inode *inode)
 {
 	/* We can forget about this inode for now - drop all
 	 *  the nodelists associated with it, etc.
@@ -233,7 +233,9 @@ void jffs2_clear_inode (struct inode *inode)
 	struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
 	struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
 
-	D1(printk(KERN_DEBUG "jffs2_clear_inode(): ino #%lu mode %o\n", inode->i_ino, inode->i_mode));
+	D1(printk(KERN_DEBUG "jffs2_evict_inode(): ino #%lu mode %o\n", inode->i_ino, inode->i_mode));
+	truncate_inode_pages(&inode->i_data, 0);
+	end_writeback(inode);
 	jffs2_do_clear_inode(c, f);
 }
 

fs/jffs2/os-linux.h

@@ -171,7 +171,7 @@ extern const struct inode_operations jffs2_symlink_inode_operations;
 int jffs2_setattr (struct dentry *, struct iattr *);
 int jffs2_do_setattr (struct inode *, struct iattr *);
 struct inode *jffs2_iget(struct super_block *, unsigned long);
-void jffs2_clear_inode (struct inode *);
+void jffs2_evict_inode (struct inode *);
 void jffs2_dirty_inode(struct inode *inode);
 struct inode *jffs2_new_inode (struct inode *dir_i, int mode,
 			       struct jffs2_raw_inode *ri);

fs/jffs2/super.c

@@ -135,7 +135,7 @@ static const struct super_operations jffs2_super_operations =
 	.write_super =	jffs2_write_super,
 	.statfs =	jffs2_statfs,
 	.remount_fs =	jffs2_remount_fs,
-	.clear_inode =	jffs2_clear_inode,
+	.evict_inode =	jffs2_evict_inode,
 	.dirty_inode =	jffs2_dirty_inode,
 	.sync_fs =	jffs2_sync_fs,
 };