Merge branch 'block-2.6.24' of git://git.kernel.dk/data/git/linux-2.6-block

* 'block-2.6.24' of git://git.kernel.dk/data/git/linux-2.6-block: (37 commits)
  [BLOCK] Fix failing compile with BLK_DEV_IO_TRACE=n
  compat_ioctl: move floppy handlers to block/compat_ioctl.c
  compat_ioctl: move cdrom handlers to block/compat_ioctl.c
  compat_ioctl: move BLKPG handling to block/compat_ioctl.c
  compat_ioctl: move hdio calls to block/compat_ioctl.c
  compat_ioctl: handle blk_trace ioctls
  compat_ioctl: add compat_blkdev_driver_ioctl()
  compat_ioctl: move common block ioctls to compat_blkdev_ioctl
  Sysace: Don't enable IRQ until after interrupt handler is registered
  Sysace: sparse fixes
  Sysace: Minor coding convention fixup
  drivers/block/umem: use DRIVER_NAME where appropriate
  drivers/block/umem: trim trailing whitespace
  drivers/block/umem: minor cleanups
  drivers/block/umem: use dev_printk()
  drivers/block/umem: move private include away from include/linux
  Sysace: Labels in C code should not be indented.
  Sysace: Add of_platform_bus binding
  Sysace: Move IRQ handler registration to occur after FSM is initialized
  Sysace: minor rework and cleanup changes
  ...

Documentation/block/biodoc.txt

@@ -477,9 +477,9 @@ With this multipage bio design:
   the same bi_io_vec array, but with the index and size accordingly modified)
 - A linked list of bios is used as before for unrelated merges (*) - this
   avoids reallocs and makes independent completions easier to handle.
-- Code that traverses the req list needs to make a distinction between
-  segments of a request (bio_for_each_segment) and the distinct completion
-  units/bios (rq_for_each_bio).
+- Code that traverses the req list can find all the segments of a bio
+  by using rq_for_each_segment.  This handles the fact that a request
+  has multiple bios, each of which can have multiple segments.
 - Drivers which can't process a large bio in one shot can use the bi_idx
   field to keep track of the next bio_vec entry to process.
   (e.g a 1MB bio_vec needs to be handled in max 128kB chunks for IDE)
@@ -664,14 +664,14 @@ in lvm or md.
 
 3.2.1 Traversing segments and completion units in a request
 
-The macros bio_for_each_segment() and rq_for_each_bio() should be used for
-traversing the bios in the request list (drivers should avoid directly
-trying to do it themselves). Using these helpers should also make it easier
-to cope with block changes in the future.
+The macro rq_for_each_segment() should be used for traversing the bios
+in the request list (drivers should avoid directly trying to do it
+themselves). Using these helpers should also make it easier to cope
+with block changes in the future.
 
-	rq_for_each_bio(bio, rq)
-		bio_for_each_segment(bio_vec, bio, i)
-			/* bio_vec is now current segment */
+	struct req_iterator iter;
+	rq_for_each_segment(bio_vec, rq, iter)
+		/* bio_vec is now current segment */
 
 I/O completion callbacks are per-bio rather than per-segment, so drivers
 that traverse bio chains on completion need to keep that in mind. Drivers

Documentation/block/ioprio.txt

@@ -86,8 +86,15 @@ extern int sys_ioprio_get(int, int);
 #error "Unsupported arch"
 #endif
 
-_syscall3(int, ioprio_set, int, which, int, who, int, ioprio);
-_syscall2(int, ioprio_get, int, which, int, who);
+static inline int ioprio_set(int which, int who, int ioprio)
+{
+	return syscall(__NR_ioprio_set, which, who, ioprio);
+}
+
+static inline int ioprio_get(int which, int who)
+{
+	return syscall(__NR_ioprio_get, which, who);
+}
 
 enum {
 	IOPRIO_CLASS_NONE,

MAINTAINERS

@@ -4156,6 +4156,13 @@ W:	http://oss.sgi.com/projects/xfs
 T:	git git://oss.sgi.com:8090/xfs/xfs-2.6.git
 S:	Supported
 
+XILINX SYSTEMACE DRIVER
+P:	Grant Likely
+M:	grant.likely@secretlab.ca
+W:	http://www.secretlab.ca/
+L:	linux-kernel@vger.kernel.org
+S:	Maintained
+
 XILINX UARTLITE SERIAL DRIVER
 P:	Peter Korsgaard
 M:	jacmet@sunsite.dk

block/Makefile

@@ -11,3 +11,4 @@ obj-$(CONFIG_IOSCHED_DEADLINE)	+= deadline-iosched.o
 obj-$(CONFIG_IOSCHED_CFQ)	+= cfq-iosched.o
 
 obj-$(CONFIG_BLK_DEV_IO_TRACE)	+= blktrace.o
+obj-$(CONFIG_COMPAT)		+= compat_ioctl.o

block/blktrace.c

@@ -312,33 +312,26 @@ static struct rchan_callbacks blk_relay_callbacks = {
 /*
  * Setup everything required to start tracing
  */
-static int blk_trace_setup(struct request_queue *q, struct block_device *bdev,
-			   char __user *arg)
+int do_blk_trace_setup(struct request_queue *q, struct block_device *bdev,
+			struct blk_user_trace_setup *buts)
 {
-	struct blk_user_trace_setup buts;
 	struct blk_trace *old_bt, *bt = NULL;
 	struct dentry *dir = NULL;
 	char b[BDEVNAME_SIZE];
 	int ret, i;
 
-	if (copy_from_user(&buts, arg, sizeof(buts)))
-		return -EFAULT;
-
-	if (!buts.buf_size || !buts.buf_nr)
+	if (!buts->buf_size || !buts->buf_nr)
 		return -EINVAL;
 
-	strcpy(buts.name, bdevname(bdev, b));
+	strcpy(buts->name, bdevname(bdev, b));
 
 	/*
 	 * some device names have larger paths - convert the slashes
 	 * to underscores for this to work as expected
 	 */
-	for (i = 0; i < strlen(buts.name); i++)
-		if (buts.name[i] == '/')
-			buts.name[i] = '_';
-
-	if (copy_to_user(arg, &buts, sizeof(buts)))
-		return -EFAULT;
+	for (i = 0; i < strlen(buts->name); i++)
+		if (buts->name[i] == '/')
+			buts->name[i] = '_';
 
 	ret = -ENOMEM;
 	bt = kzalloc(sizeof(*bt), GFP_KERNEL);
@@ -350,7 +343,7 @@ static int blk_trace_setup(struct request_queue *q, struct block_device *bdev,
 		goto err;
 
 	ret = -ENOENT;
-	dir = blk_create_tree(buts.name);
+	dir = blk_create_tree(buts->name);
 	if (!dir)
 		goto err;
 
@@ -363,20 +356,21 @@ static int blk_trace_setup(struct request_queue *q, struct block_device *bdev,
 	if (!bt->dropped_file)
 		goto err;
 
-	bt->rchan = relay_open("trace", dir, buts.buf_size, buts.buf_nr, &blk_relay_callbacks, bt);
+	bt->rchan = relay_open("trace", dir, buts->buf_size,
+				buts->buf_nr, &blk_relay_callbacks, bt);
 	if (!bt->rchan)
 		goto err;
 
-	bt->act_mask = buts.act_mask;
+	bt->act_mask = buts->act_mask;
 	if (!bt->act_mask)
 		bt->act_mask = (u16) -1;
 
-	bt->start_lba = buts.start_lba;
-	bt->end_lba = buts.end_lba;
+	bt->start_lba = buts->start_lba;
+	bt->end_lba = buts->end_lba;
 	if (!bt->end_lba)
 		bt->end_lba = -1ULL;
 
-	bt->pid = buts.pid;
+	bt->pid = buts->pid;
 	bt->trace_state = Blktrace_setup;
 
 	ret = -EBUSY;
@@ -401,6 +395,26 @@ err:
 	return ret;
 }
 
+static int blk_trace_setup(struct request_queue *q, struct block_device *bdev,
+			   char __user *arg)
+{
+	struct blk_user_trace_setup buts;
+	int ret;
+
+	ret = copy_from_user(&buts, arg, sizeof(buts));
+	if (ret)
+		return -EFAULT;
+
+	ret = do_blk_trace_setup(q, bdev, &buts);
+	if (ret)
+		return ret;
+
+	if (copy_to_user(arg, &buts, sizeof(buts)))
+		return -EFAULT;
+
+	return 0;
+}
+
 static int blk_trace_startstop(struct request_queue *q, int start)
 {
 	struct blk_trace *bt;

block/compat_ioctl.c

@@ -0,0 +1,814 @@
+#include <linux/blkdev.h>
+#include <linux/blkpg.h>
+#include <linux/blktrace_api.h>
+#include <linux/cdrom.h>
+#include <linux/compat.h>
+#include <linux/elevator.h>
+#include <linux/fd.h>
+#include <linux/hdreg.h>
+#include <linux/syscalls.h>
+#include <linux/smp_lock.h>
+#include <linux/types.h>
+#include <linux/uaccess.h>
+
+static int compat_put_ushort(unsigned long arg, unsigned short val)
+{
+	return put_user(val, (unsigned short __user *)compat_ptr(arg));
+}
+
+static int compat_put_int(unsigned long arg, int val)
+{
+	return put_user(val, (compat_int_t __user *)compat_ptr(arg));
+}
+
+static int compat_put_long(unsigned long arg, long val)
+{
+	return put_user(val, (compat_long_t __user *)compat_ptr(arg));
+}
+
+static int compat_put_ulong(unsigned long arg, compat_ulong_t val)
+{
+	return put_user(val, (compat_ulong_t __user *)compat_ptr(arg));
+}
+
+static int compat_put_u64(unsigned long arg, u64 val)
+{
+	return put_user(val, (compat_u64 __user *)compat_ptr(arg));
+}
+
+struct compat_hd_geometry {
+	unsigned char heads;
+	unsigned char sectors;
+	unsigned short cylinders;
+	u32 start;
+};
+
+static int compat_hdio_getgeo(struct gendisk *disk, struct block_device *bdev,
+			struct compat_hd_geometry __user *ugeo)
+{
+	struct hd_geometry geo;
+	int ret;
+
+	if (!ugeo)
+		return -EINVAL;
+	if (!disk->fops->getgeo)
+		return -ENOTTY;
+
+	/*
+	 * We need to set the startsect first, the driver may
+	 * want to override it.
+	 */
+	geo.start = get_start_sect(bdev);
+	ret = disk->fops->getgeo(bdev, &geo);
+	if (ret)
+		return ret;
+
+	ret = copy_to_user(ugeo, &geo, 4);
+	ret |= __put_user(geo.start, &ugeo->start);
+	if (ret)
+		ret = -EFAULT;
+
+	return ret;
+}
+
+static int compat_hdio_ioctl(struct inode *inode, struct file *file,
+		struct gendisk *disk, unsigned int cmd, unsigned long arg)
+{
+	mm_segment_t old_fs = get_fs();
+	unsigned long kval;
+	unsigned int __user *uvp;
+	int error;
+
+	set_fs(KERNEL_DS);
+	error = blkdev_driver_ioctl(inode, file, disk,
+				cmd, (unsigned long)(&kval));
+	set_fs(old_fs);
+
+	if (error == 0) {
+		uvp = compat_ptr(arg);
+		if (put_user(kval, uvp))
+			error = -EFAULT;
+	}
+	return error;
+}
+
+struct compat_cdrom_read_audio {
+	union cdrom_addr	addr;
+	u8			addr_format;
+	compat_int_t		nframes;
+	compat_caddr_t		buf;
+};
+
+struct compat_cdrom_generic_command {
+	unsigned char	cmd[CDROM_PACKET_SIZE];
+	compat_caddr_t	buffer;
+	compat_uint_t	buflen;
+	compat_int_t	stat;
+	compat_caddr_t	sense;
+	unsigned char	data_direction;
+	compat_int_t	quiet;
+	compat_int_t	timeout;
+	compat_caddr_t	reserved[1];
+};
+
+static int compat_cdrom_read_audio(struct inode *inode, struct file *file,
+		struct gendisk *disk, unsigned int cmd, unsigned long arg)
+{
+	struct cdrom_read_audio __user *cdread_audio;
+	struct compat_cdrom_read_audio __user *cdread_audio32;
+	__u32 data;
+	void __user *datap;
+
+	cdread_audio = compat_alloc_user_space(sizeof(*cdread_audio));
+	cdread_audio32 = compat_ptr(arg);
+
+	if (copy_in_user(&cdread_audio->addr,
+			 &cdread_audio32->addr,
+			 (sizeof(*cdread_audio32) -
+			  sizeof(compat_caddr_t))))
+		return -EFAULT;
+
+	if (get_user(data, &cdread_audio32->buf))
+		return -EFAULT;
+	datap = compat_ptr(data);
+	if (put_user(datap, &cdread_audio->buf))
+		return -EFAULT;
+
+	return blkdev_driver_ioctl(inode, file, disk, cmd,
+			(unsigned long)cdread_audio);
+}
+
+static int compat_cdrom_generic_command(struct inode *inode, struct file *file,
+		struct gendisk *disk, unsigned int cmd, unsigned long arg)
+{
+	struct cdrom_generic_command __user *cgc;
+	struct compat_cdrom_generic_command __user *cgc32;
+	u32 data;
+	unsigned char dir;
+	int itmp;
+
+	cgc = compat_alloc_user_space(sizeof(*cgc));
+	cgc32 = compat_ptr(arg);
+
+	if (copy_in_user(&cgc->cmd, &cgc32->cmd, sizeof(cgc->cmd)) ||
+	    get_user(data, &cgc32->buffer) ||
+	    put_user(compat_ptr(data), &cgc->buffer) ||
+	    copy_in_user(&cgc->buflen, &cgc32->buflen,
+			 (sizeof(unsigned int) + sizeof(int))) ||
+	    get_user(data, &cgc32->sense) ||
+	    put_user(compat_ptr(data), &cgc->sense) ||
+	    get_user(dir, &cgc32->data_direction) ||
+	    put_user(dir, &cgc->data_direction) ||
+	    get_user(itmp, &cgc32->quiet) ||
+	    put_user(itmp, &cgc->quiet) ||
+	    get_user(itmp, &cgc32->timeout) ||
+	    put_user(itmp, &cgc->timeout) ||
+	    get_user(data, &cgc32->reserved[0]) ||
+	    put_user(compat_ptr(data), &cgc->reserved[0]))
+		return -EFAULT;
+
+	return blkdev_driver_ioctl(inode, file, disk, cmd, (unsigned long)cgc);
+}
+
+struct compat_blkpg_ioctl_arg {
+	compat_int_t op;
+	compat_int_t flags;
+	compat_int_t datalen;
+	compat_caddr_t data;
+};
+
+static int compat_blkpg_ioctl(struct inode *inode, struct file *file,
+		unsigned int cmd, struct compat_blkpg_ioctl_arg __user *ua32)
+{
+	struct blkpg_ioctl_arg __user *a = compat_alloc_user_space(sizeof(*a));
+	compat_caddr_t udata;
+	compat_int_t n;
+	int err;
+
+	err = get_user(n, &ua32->op);
+	err |= put_user(n, &a->op);
+	err |= get_user(n, &ua32->flags);
+	err |= put_user(n, &a->flags);
+	err |= get_user(n, &ua32->datalen);
+	err |= put_user(n, &a->datalen);
+	err |= get_user(udata, &ua32->data);
+	err |= put_user(compat_ptr(udata), &a->data);
+	if (err)
+		return err;
+
+	return blkdev_ioctl(inode, file, cmd, (unsigned long)a);
+}
+
+#define BLKBSZGET_32		_IOR(0x12, 112, int)
+#define BLKBSZSET_32		_IOW(0x12, 113, int)
+#define BLKGETSIZE64_32		_IOR(0x12, 114, int)
+
+struct compat_floppy_struct {
+	compat_uint_t	size;
+	compat_uint_t	sect;
+	compat_uint_t	head;
+	compat_uint_t	track;
+	compat_uint_t	stretch;
+	unsigned char	gap;
+	unsigned char	rate;
+	unsigned char	spec1;
+	unsigned char	fmt_gap;
+	const compat_caddr_t name;
+};
+
+struct compat_floppy_drive_params {
+	char		cmos;
+	compat_ulong_t	max_dtr;
+	compat_ulong_t	hlt;
+	compat_ulong_t	hut;
+	compat_ulong_t	srt;
+	compat_ulong_t	spinup;
+	compat_ulong_t	spindown;
+	unsigned char	spindown_offset;
+	unsigned char	select_delay;
+	unsigned char	rps;
+	unsigned char	tracks;
+	compat_ulong_t	timeout;
+	unsigned char	interleave_sect;
+	struct floppy_max_errors max_errors;
+	char		flags;
+	char		read_track;
+	short		autodetect[8];
+	compat_int_t	checkfreq;
+	compat_int_t	native_format;
+};
+
+struct compat_floppy_drive_struct {
+	signed char	flags;
+	compat_ulong_t	spinup_date;
+	compat_ulong_t	select_date;
+	compat_ulong_t	first_read_date;
+	short		probed_format;
+	short		track;
+	short		maxblock;
+	short		maxtrack;
+	compat_int_t	generation;
+	compat_int_t	keep_data;
+	compat_int_t	fd_ref;
+	compat_int_t	fd_device;
+	compat_int_t	last_checked;
+	compat_caddr_t dmabuf;
+	compat_int_t	bufblocks;
+};
+
+struct compat_floppy_fdc_state {
+	compat_int_t	spec1;
+	compat_int_t	spec2;
+	compat_int_t	dtr;
+	unsigned char	version;
+	unsigned char	dor;
+	compat_ulong_t	address;
+	unsigned int	rawcmd:2;
+	unsigned int	reset:1;
+	unsigned int	need_configure:1;
+	unsigned int	perp_mode:2;
+	unsigned int	has_fifo:1;
+	unsigned int	driver_version;
+	unsigned char	track[4];
+};
+
+struct compat_floppy_write_errors {
+	unsigned int	write_errors;
+	compat_ulong_t	first_error_sector;
+	compat_int_t	first_error_generation;
+	compat_ulong_t	last_error_sector;
+	compat_int_t	last_error_generation;
+	compat_uint_t	badness;
+};
+
+#define FDSETPRM32 _IOW(2, 0x42, struct compat_floppy_struct)
+#define FDDEFPRM32 _IOW(2, 0x43, struct compat_floppy_struct)
+#define FDGETPRM32 _IOR(2, 0x04, struct compat_floppy_struct)
+#define FDSETDRVPRM32 _IOW(2, 0x90, struct compat_floppy_drive_params)
+#define FDGETDRVPRM32 _IOR(2, 0x11, struct compat_floppy_drive_params)
+#define FDGETDRVSTAT32 _IOR(2, 0x12, struct compat_floppy_drive_struct)
+#define FDPOLLDRVSTAT32 _IOR(2, 0x13, struct compat_floppy_drive_struct)
+#define FDGETFDCSTAT32 _IOR(2, 0x15, struct compat_floppy_fdc_state)
+#define FDWERRORGET32  _IOR(2, 0x17, struct compat_floppy_write_errors)
+
+static struct {
+	unsigned int	cmd32;
+	unsigned int	cmd;
+} fd_ioctl_trans_table[] = {
+	{ FDSETPRM32, FDSETPRM },
+	{ FDDEFPRM32, FDDEFPRM },
+	{ FDGETPRM32, FDGETPRM },
+	{ FDSETDRVPRM32, FDSETDRVPRM },
+	{ FDGETDRVPRM32, FDGETDRVPRM },
+	{ FDGETDRVSTAT32, FDGETDRVSTAT },
+	{ FDPOLLDRVSTAT32, FDPOLLDRVSTAT },
+	{ FDGETFDCSTAT32, FDGETFDCSTAT },
+	{ FDWERRORGET32, FDWERRORGET }
+};
+
+#define NR_FD_IOCTL_TRANS ARRAY_SIZE(fd_ioctl_trans_table)
+
+static int compat_fd_ioctl(struct inode *inode, struct file *file,
+		struct gendisk *disk, unsigned int cmd, unsigned long arg)
+{
+	mm_segment_t old_fs = get_fs();
+	void *karg = NULL;
+	unsigned int kcmd = 0;
+	int i, err;
+
+	for (i = 0; i < NR_FD_IOCTL_TRANS; i++)
+		if (cmd == fd_ioctl_trans_table[i].cmd32) {
+			kcmd = fd_ioctl_trans_table[i].cmd;
+			break;
+		}
+	if (!kcmd)
+		return -EINVAL;
+
+	switch (cmd) {
+	case FDSETPRM32:
+	case FDDEFPRM32:
+	case FDGETPRM32:
+	{
+		compat_uptr_t name;
+		struct compat_floppy_struct __user *uf;
+		struct floppy_struct *f;
+
+		uf = compat_ptr(arg);
+		f = karg = kmalloc(sizeof(struct floppy_struct), GFP_KERNEL);
+		if (!karg)
+			return -ENOMEM;
+		if (cmd == FDGETPRM32)
+			break;
+		err = __get_user(f->size, &uf->size);
+		err |= __get_user(f->sect, &uf->sect);
+		err |= __get_user(f->head, &uf->head);
+		err |= __get_user(f->track, &uf->track);
+		err |= __get_user(f->stretch, &uf->stretch);
+		err |= __get_user(f->gap, &uf->gap);
+		err |= __get_user(f->rate, &uf->rate);
+		err |= __get_user(f->spec1, &uf->spec1);
+		err |= __get_user(f->fmt_gap, &uf->fmt_gap);
+		err |= __get_user(name, &uf->name);
+		f->name = compat_ptr(name);
+		if (err) {
+			err = -EFAULT;
+			goto out;
+		}
+		break;
+	}
+	case FDSETDRVPRM32:
+	case FDGETDRVPRM32:
+	{
+		struct compat_floppy_drive_params __user *uf;
+		struct floppy_drive_params *f;
+
+		uf = compat_ptr(arg);
+		f = karg = kmalloc(sizeof(struct floppy_drive_params), GFP_KERNEL);
+		if (!karg)
+			return -ENOMEM;
+		if (cmd == FDGETDRVPRM32)
+			break;
+		err = __get_user(f->cmos, &uf->cmos);
+		err |= __get_user(f->max_dtr, &uf->max_dtr);
+		err |= __get_user(f->hlt, &uf->hlt);
+		err |= __get_user(f->hut, &uf->hut);
+		err |= __get_user(f->srt, &uf->srt);
+		err |= __get_user(f->spinup, &uf->spinup);
+		err |= __get_user(f->spindown, &uf->spindown);
+		err |= __get_user(f->spindown_offset, &uf->spindown_offset);
+		err |= __get_user(f->select_delay, &uf->select_delay);
+		err |= __get_user(f->rps, &uf->rps);
+		err |= __get_user(f->tracks, &uf->tracks);
+		err |= __get_user(f->timeout, &uf->timeout);
+		err |= __get_user(f->interleave_sect, &uf->interleave_sect);
+		err |= __copy_from_user(&f->max_errors, &uf->max_errors, sizeof(f->max_errors));
+		err |= __get_user(f->flags, &uf->flags);
+		err |= __get_user(f->read_track, &uf->read_track);
+		err |= __copy_from_user(f->autodetect, uf->autodetect, sizeof(f->autodetect));
+		err |= __get_user(f->checkfreq, &uf->checkfreq);
+		err |= __get_user(f->native_format, &uf->native_format);
+		if (err) {
+			err = -EFAULT;
+			goto out;
+		}
+		break;
+	}
+	case FDGETDRVSTAT32:
+	case FDPOLLDRVSTAT32:
+		karg = kmalloc(sizeof(struct floppy_drive_struct), GFP_KERNEL);
+		if (!karg)
+			return -ENOMEM;
+		break;
+	case FDGETFDCSTAT32:
+		karg = kmalloc(sizeof(struct floppy_fdc_state), GFP_KERNEL);
+		if (!karg)
+			return -ENOMEM;
+		break;
+	case FDWERRORGET32:
+		karg = kmalloc(sizeof(struct floppy_write_errors), GFP_KERNEL);
+		if (!karg)
+			return -ENOMEM;
+		break;
+	default:
+		return -EINVAL;
+	}
+	set_fs(KERNEL_DS);
+	err = blkdev_driver_ioctl(inode, file, disk, kcmd, (unsigned long)karg);
+	set_fs(old_fs);
+	if (err)
+		goto out;
+	switch (cmd) {
+	case FDGETPRM32:
+	{
+		struct floppy_struct *f = karg;
+		struct compat_floppy_struct __user *uf = compat_ptr(arg);
+
+		err = __put_user(f->size, &uf->size);
+		err |= __put_user(f->sect, &uf->sect);
+		err |= __put_user(f->head, &uf->head);
+		err |= __put_user(f->track, &uf->track);
+		err |= __put_user(f->stretch, &uf->stretch);
+		err |= __put_user(f->gap, &uf->gap);
+		err |= __put_user(f->rate, &uf->rate);
+		err |= __put_user(f->spec1, &uf->spec1);
+		err |= __put_user(f->fmt_gap, &uf->fmt_gap);
+		err |= __put_user((u64)f->name, (compat_caddr_t __user *)&uf->name);
+		break;
+	}
+	case FDGETDRVPRM32:
+	{
+		struct compat_floppy_drive_params __user *uf;
+		struct floppy_drive_params *f = karg;
+
+		uf = compat_ptr(arg);
+		err = __put_user(f->cmos, &uf->cmos);
+		err |= __put_user(f->max_dtr, &uf->max_dtr);
+		err |= __put_user(f->hlt, &uf->hlt);
+		err |= __put_user(f->hut, &uf->hut);
+		err |= __put_user(f->srt, &uf->srt);
+		err |= __put_user(f->spinup, &uf->spinup);
+		err |= __put_user(f->spindown, &uf->spindown);
+		err |= __put_user(f->spindown_offset, &uf->spindown_offset);
+		err |= __put_user(f->select_delay, &uf->select_delay);
+		err |= __put_user(f->rps, &uf->rps);
+		err |= __put_user(f->tracks, &uf->tracks);
+		err |= __put_user(f->timeout, &uf->timeout);
+		err |= __put_user(f->interleave_sect, &uf->interleave_sect);
+		err |= __copy_to_user(&uf->max_errors, &f->max_errors, sizeof(f->max_errors));
+		err |= __put_user(f->flags, &uf->flags);
+		err |= __put_user(f->read_track, &uf->read_track);
+		err |= __copy_to_user(uf->autodetect, f->autodetect, sizeof(f->autodetect));
+		err |= __put_user(f->checkfreq, &uf->checkfreq);
+		err |= __put_user(f->native_format, &uf->native_format);
+		break;
+	}
+	case FDGETDRVSTAT32:
+	case FDPOLLDRVSTAT32:
+	{
+		struct compat_floppy_drive_struct __user *uf;
+		struct floppy_drive_struct *f = karg;
+
+		uf = compat_ptr(arg);
+		err = __put_user(f->flags, &uf->flags);
+		err |= __put_user(f->spinup_date, &uf->spinup_date);
+		err |= __put_user(f->select_date, &uf->select_date);
+		err |= __put_user(f->first_read_date, &uf->first_read_date);
+		err |= __put_user(f->probed_format, &uf->probed_format);
+		err |= __put_user(f->track, &uf->track);
+		err |= __put_user(f->maxblock, &uf->maxblock);
+		err |= __put_user(f->maxtrack, &uf->maxtrack);
+		err |= __put_user(f->generation, &uf->generation);
+		err |= __put_user(f->keep_data, &uf->keep_data);
+		err |= __put_user(f->fd_ref, &uf->fd_ref);
+		err |= __put_user(f->fd_device, &uf->fd_device);
+		err |= __put_user(f->last_checked, &uf->last_checked);
+		err |= __put_user((u64)f->dmabuf, &uf->dmabuf);
+		err |= __put_user((u64)f->bufblocks, &uf->bufblocks);
+		break;
+	}
+	case FDGETFDCSTAT32:
+	{
+		struct compat_floppy_fdc_state __user *uf;
+		struct floppy_fdc_state *f = karg;
+
+		uf = compat_ptr(arg);
+		err = __put_user(f->spec1, &uf->spec1);
+		err |= __put_user(f->spec2, &uf->spec2);
+		err |= __put_user(f->dtr, &uf->dtr);
+		err |= __put_user(f->version, &uf->version);
+		err |= __put_user(f->dor, &uf->dor);
+		err |= __put_user(f->address, &uf->address);
+		err |= __copy_to_user((char __user *)&uf->address + sizeof(uf->address),
+				   (char *)&f->address + sizeof(f->address), sizeof(int));
+		err |= __put_user(f->driver_version, &uf->driver_version);
+		err |= __copy_to_user(uf->track, f->track, sizeof(f->track));
+		break;
+	}
+	case FDWERRORGET32:
+	{
+		struct compat_floppy_write_errors __user *uf;
+		struct floppy_write_errors *f = karg;
+
+		uf = compat_ptr(arg);
+		err = __put_user(f->write_errors, &uf->write_errors);
+		err |= __put_user(f->first_error_sector, &uf->first_error_sector);
+		err |= __put_user(f->first_error_generation, &uf->first_error_generation);
+		err |= __put_user(f->last_error_sector, &uf->last_error_sector);
+		err |= __put_user(f->last_error_generation, &uf->last_error_generation);
+		err |= __put_user(f->badness, &uf->badness);
+		break;
+	}
+	default:
+		break;
+	}
+	if (err)
+		err = -EFAULT;
+
+out:
+	kfree(karg);
+	return err;
+}
+
+struct compat_blk_user_trace_setup {
+	char name[32];
+	u16 act_mask;
+	u32 buf_size;
+	u32 buf_nr;
+	compat_u64 start_lba;
+	compat_u64 end_lba;
+	u32 pid;
+};
+#define BLKTRACESETUP32 _IOWR(0x12, 115, struct compat_blk_user_trace_setup)
+
+static int compat_blk_trace_setup(struct block_device *bdev, char __user *arg)
+{
+	struct blk_user_trace_setup buts;
+	struct compat_blk_user_trace_setup cbuts;
+	struct request_queue *q;
+	int ret;
+
+	q = bdev_get_queue(bdev);
+	if (!q)
+		return -ENXIO;
+
+	if (copy_from_user(&cbuts, arg, sizeof(cbuts)))
+		return -EFAULT;
+
+	buts = (struct blk_user_trace_setup) {
+		.act_mask = cbuts.act_mask,
+		.buf_size = cbuts.buf_size,
+		.buf_nr = cbuts.buf_nr,
+		.start_lba = cbuts.start_lba,
+		.end_lba = cbuts.end_lba,
+		.pid = cbuts.pid,
+	};
+	memcpy(&buts.name, &cbuts.name, 32);
+
+	mutex_lock(&bdev->bd_mutex);
+	ret = do_blk_trace_setup(q, bdev, &buts);
+	mutex_unlock(&bdev->bd_mutex);
+	if (ret)
+		return ret;
+
+	if (copy_to_user(arg, &buts.name, 32))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int compat_blkdev_driver_ioctl(struct inode *inode, struct file *file,
+			struct gendisk *disk, unsigned cmd, unsigned long arg)
+{
+	int ret;
+
+	switch (arg) {
+	case HDIO_GET_UNMASKINTR:
+	case HDIO_GET_MULTCOUNT:
+	case HDIO_GET_KEEPSETTINGS:
+	case HDIO_GET_32BIT:
+	case HDIO_GET_NOWERR:
+	case HDIO_GET_DMA:
+	case HDIO_GET_NICE:
+	case HDIO_GET_WCACHE:
+	case HDIO_GET_ACOUSTIC:
+	case HDIO_GET_ADDRESS:
+	case HDIO_GET_BUSSTATE:
+		return compat_hdio_ioctl(inode, file, disk, cmd, arg);
+	case FDSETPRM32:
+	case FDDEFPRM32:
+	case FDGETPRM32:
+	case FDSETDRVPRM32:
+	case FDGETDRVPRM32:
+	case FDGETDRVSTAT32:
+	case FDPOLLDRVSTAT32:
+	case FDGETFDCSTAT32:
+	case FDWERRORGET32:
+		return compat_fd_ioctl(inode, file, disk, cmd, arg);
+	case CDROMREADAUDIO:
+		return compat_cdrom_read_audio(inode, file, disk, cmd, arg);
+	case CDROM_SEND_PACKET:
+		return compat_cdrom_generic_command(inode, file, disk, cmd, arg);
+
+	/*
+	 * No handler required for the ones below, we just need to
+	 * convert arg to a 64 bit pointer.
+	 */
+	case BLKSECTSET:
+	/*
+	 * 0x03 -- HD/IDE ioctl's used by hdparm and friends.
+	 *         Some need translations, these do not.
+	 */
+	case HDIO_GET_IDENTITY:
+	case HDIO_DRIVE_TASK:
+	case HDIO_DRIVE_CMD:
+	case HDIO_SCAN_HWIF:
+	/* 0x330 is reserved -- it used to be HDIO_GETGEO_BIG */
+	case 0x330:
+	/* 0x02 -- Floppy ioctls */
+	case FDMSGON:
+	case FDMSGOFF:
+	case FDSETEMSGTRESH:
+	case FDFLUSH:
+	case FDWERRORCLR:
+	case FDSETMAXERRS:
+	case FDGETMAXERRS:
+	case FDGETDRVTYP:
+	case FDEJECT:
+	case FDCLRPRM:
+	case FDFMTBEG:
+	case FDFMTEND:
+	case FDRESET:
+	case FDTWADDLE:
+	case FDFMTTRK:
+	case FDRAWCMD:
+	/* CDROM stuff */
+	case CDROMPAUSE:
+	case CDROMRESUME:
+	case CDROMPLAYMSF:
+	case CDROMPLAYTRKIND:
+	case CDROMREADTOCHDR:
+	case CDROMREADTOCENTRY:
+	case CDROMSTOP:
+	case CDROMSTART:
+	case CDROMEJECT:
+	case CDROMVOLCTRL:
+	case CDROMSUBCHNL:
+	case CDROMMULTISESSION:
+	case CDROM_GET_MCN:
+	case CDROMRESET:
+	case CDROMVOLREAD:
+	case CDROMSEEK:
+	case CDROMPLAYBLK:
+	case CDROMCLOSETRAY:
+	case CDROM_DISC_STATUS:
+	case CDROM_CHANGER_NSLOTS:
+	case CDROM_GET_CAPABILITY:
+	/* Ignore cdrom.h about these next 5 ioctls, they absolutely do
+	 * not take a struct cdrom_read, instead they take a struct cdrom_msf
+	 * which is compatible.
+	 */
+	case CDROMREADMODE2:
+	case CDROMREADMODE1:
+	case CDROMREADRAW:
+	case CDROMREADCOOKED:
+	case CDROMREADALL:
+	/* DVD ioctls */
+	case DVD_READ_STRUCT:
+	case DVD_WRITE_STRUCT:
+	case DVD_AUTH:
+		arg = (unsigned long)compat_ptr(arg);
+	/* These intepret arg as an unsigned long, not as a pointer,
+	 * so we must not do compat_ptr() conversion. */
+	case HDIO_SET_MULTCOUNT:
+	case HDIO_SET_UNMASKINTR:
+	case HDIO_SET_KEEPSETTINGS:
+	case HDIO_SET_32BIT:
+	case HDIO_SET_NOWERR:
+	case HDIO_SET_DMA:
+	case HDIO_SET_PIO_MODE:
+	case HDIO_SET_NICE:
+	case HDIO_SET_WCACHE:
+	case HDIO_SET_ACOUSTIC:
+	case HDIO_SET_BUSSTATE:
+	case HDIO_SET_ADDRESS:
+	case CDROMEJECT_SW:
+	case CDROM_SET_OPTIONS:
+	case CDROM_CLEAR_OPTIONS:
+	case CDROM_SELECT_SPEED:
+	case CDROM_SELECT_DISC:
+	case CDROM_MEDIA_CHANGED:
+	case CDROM_DRIVE_STATUS:
+	case CDROM_LOCKDOOR:
+	case CDROM_DEBUG:
+		break;
+	default:
+		/* unknown ioctl number */
+		return -ENOIOCTLCMD;
+	}
+
+	if (disk->fops->unlocked_ioctl)
+		return disk->fops->unlocked_ioctl(file, cmd, arg);
+
+	if (disk->fops->ioctl) {
+		lock_kernel();
+		ret = disk->fops->ioctl(inode, file, cmd, arg);
+		unlock_kernel();
+		return ret;
+	}
+
+	return -ENOTTY;
+}
+
+static int compat_blkdev_locked_ioctl(struct inode *inode, struct file *file,
+				struct block_device *bdev,
+				unsigned cmd, unsigned long arg)
+{
+	struct backing_dev_info *bdi;
+
+	switch (cmd) {
+	case BLKRAGET:
+	case BLKFRAGET:
+		if (!arg)
+			return -EINVAL;
+		bdi = blk_get_backing_dev_info(bdev);
+		if (bdi == NULL)
+			return -ENOTTY;
+		return compat_put_long(arg,
+				       (bdi->ra_pages * PAGE_CACHE_SIZE) / 512);
+	case BLKROGET: /* compatible */
+		return compat_put_int(arg, bdev_read_only(bdev) != 0);
+	case BLKBSZGET_32: /* get the logical block size (cf. BLKSSZGET) */
+		return compat_put_int(arg, block_size(bdev));
+	case BLKSSZGET: /* get block device hardware sector size */
+		return compat_put_int(arg, bdev_hardsect_size(bdev));
+	case BLKSECTGET:
+		return compat_put_ushort(arg,
+					 bdev_get_queue(bdev)->max_sectors);
+	case BLKRASET: /* compatible, but no compat_ptr (!) */
+	case BLKFRASET:
+		if (!capable(CAP_SYS_ADMIN))
+			return -EACCES;
+		bdi = blk_get_backing_dev_info(bdev);
+		if (bdi == NULL)
+			return -ENOTTY;
+		bdi->ra_pages = (arg * 512) / PAGE_CACHE_SIZE;
+		return 0;
+	case BLKGETSIZE:
+		if ((bdev->bd_inode->i_size >> 9) > ~0UL)
+			return -EFBIG;
+		return compat_put_ulong(arg, bdev->bd_inode->i_size >> 9);
+
+	case BLKGETSIZE64_32:
+		return compat_put_u64(arg, bdev->bd_inode->i_size);
+
+	case BLKTRACESETUP32:
+		return compat_blk_trace_setup(bdev, compat_ptr(arg));
+	case BLKTRACESTART: /* compatible */
+	case BLKTRACESTOP:  /* compatible */
+	case BLKTRACETEARDOWN: /* compatible */
+		return blk_trace_ioctl(bdev, cmd, compat_ptr(arg));
+	}
+	return -ENOIOCTLCMD;
+}
+
+/* Most of the generic ioctls are handled in the normal fallback path.
+   This assumes the blkdev's low level compat_ioctl always returns
+   ENOIOCTLCMD for unknown ioctls. */
+long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
+{
+	int ret = -ENOIOCTLCMD;
+	struct inode *inode = file->f_mapping->host;
+	struct block_device *bdev = inode->i_bdev;
+	struct gendisk *disk = bdev->bd_disk;
+
+	switch (cmd) {
+	case HDIO_GETGEO:
+		return compat_hdio_getgeo(disk, bdev, compat_ptr(arg));
+	case BLKFLSBUF:
+	case BLKROSET:
+	/*
+	 * the ones below are implemented in blkdev_locked_ioctl,
+	 * but we call blkdev_ioctl, which gets the lock for us
+	 */
+	case BLKRRPART:
+		return blkdev_ioctl(inode, file, cmd,
+				(unsigned long)compat_ptr(arg));
+	case BLKBSZSET_32:
+		return blkdev_ioctl(inode, file, BLKBSZSET,
+				(unsigned long)compat_ptr(arg));
+	case BLKPG:
+		return compat_blkpg_ioctl(inode, file, cmd, compat_ptr(arg));
+	}
+
+	lock_kernel();
+	ret = compat_blkdev_locked_ioctl(inode, file, bdev, cmd, arg);
+	/* FIXME: why do we assume -> compat_ioctl needs the BKL? */
+	if (ret == -ENOIOCTLCMD && disk->fops->compat_ioctl)
+		ret = disk->fops->compat_ioctl(file, cmd, arg);
+	unlock_kernel();
+
+	if (ret != -ENOIOCTLCMD)
+		return ret;
+
+	return compat_blkdev_driver_ioctl(inode, file, disk, cmd, arg);
+}

block/ioctl.c

@@ -217,6 +217,10 @@ int blkdev_driver_ioctl(struct inode *inode, struct file *file,
 }
 EXPORT_SYMBOL_GPL(blkdev_driver_ioctl);
 
+/*
+ * always keep this in sync with compat_blkdev_ioctl() and
+ * compat_blkdev_locked_ioctl()
+ */
 int blkdev_ioctl(struct inode *inode, struct file *file, unsigned cmd,
 			unsigned long arg)
 {
@@ -284,21 +288,4 @@ int blkdev_ioctl(struct inode *inode, struct file *file, unsigned cmd,
 
 	return blkdev_driver_ioctl(inode, file, disk, cmd, arg);
 }
-
-/* Most of the generic ioctls are handled in the normal fallback path.
-   This assumes the blkdev's low level compat_ioctl always returns
-   ENOIOCTLCMD for unknown ioctls. */
-long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
-{
-	struct block_device *bdev = file->f_path.dentry->d_inode->i_bdev;
-	struct gendisk *disk = bdev->bd_disk;
-	int ret = -ENOIOCTLCMD;
-	if (disk->fops->compat_ioctl) {
-		lock_kernel();
-		ret = disk->fops->compat_ioctl(file, cmd, arg);
-		unlock_kernel();
-	}
-	return ret;
-}
-
 EXPORT_SYMBOL_GPL(blkdev_ioctl);

block/ll_rw_blk.c

@@ -42,6 +42,9 @@ static void drive_stat_acct(struct request *rq, int nr_sectors, int new_io);
 static void init_request_from_bio(struct request *req, struct bio *bio);
 static int __make_request(struct request_queue *q, struct bio *bio);
 static struct io_context *current_io_context(gfp_t gfp_flags, int node);
+static void blk_recalc_rq_segments(struct request *rq);
+static void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
+			    struct bio *bio);
 
 /*
  * For the allocated request tables
@@ -428,7 +431,6 @@ static void queue_flush(struct request_queue *q, unsigned which)
 static inline struct request *start_ordered(struct request_queue *q,
 					    struct request *rq)
 {
-	q->bi_size = 0;
 	q->orderr = 0;
 	q->ordered = q->next_ordered;
 	q->ordseq |= QUEUE_ORDSEQ_STARTED;
@@ -525,56 +527,36 @@ int blk_do_ordered(struct request_queue *q, struct request **rqp)
 	return 1;
 }
 
-static int flush_dry_bio_endio(struct bio *bio, unsigned int bytes, int error)
-{
-	struct request_queue *q = bio->bi_private;
-
-	/*
-	 * This is dry run, restore bio_sector and size.  We'll finish
-	 * this request again with the original bi_end_io after an
-	 * error occurs or post flush is complete.
-	 */
-	q->bi_size += bytes;
-
-	if (bio->bi_size)
-		return 1;
-
-	/* Reset bio */
-	set_bit(BIO_UPTODATE, &bio->bi_flags);
-	bio->bi_size = q->bi_size;
-	bio->bi_sector -= (q->bi_size >> 9);
-	q->bi_size = 0;
-
-	return 0;
-}
-
-static int ordered_bio_endio(struct request *rq, struct bio *bio,
-			     unsigned int nbytes, int error)
+static void req_bio_endio(struct request *rq, struct bio *bio,
+			  unsigned int nbytes, int error)
 {
 	struct request_queue *q = rq->q;
-	bio_end_io_t *endio;
-	void *private;
 
-	if (&q->bar_rq != rq)
-		return 0;
-
-	/*
-	 * Okay, this is the barrier request in progress, dry finish it.
-	 */
-	if (error && !q->orderr)
-		q->orderr = error;
+	if (&q->bar_rq != rq) {
+		if (error)
+			clear_bit(BIO_UPTODATE, &bio->bi_flags);
+		else if (!test_bit(BIO_UPTODATE, &bio->bi_flags))
+			error = -EIO;
 
-	endio = bio->bi_end_io;
-	private = bio->bi_private;
-	bio->bi_end_io = flush_dry_bio_endio;
-	bio->bi_private = q;
-
-	bio_endio(bio, nbytes, error);
+		if (unlikely(nbytes > bio->bi_size)) {
+			printk("%s: want %u bytes done, only %u left\n",
+			       __FUNCTION__, nbytes, bio->bi_size);
+			nbytes = bio->bi_size;
+		}
 
-	bio->bi_end_io = endio;
-	bio->bi_private = private;
+		bio->bi_size -= nbytes;
+		bio->bi_sector += (nbytes >> 9);
+		if (bio->bi_size == 0)
+			bio_endio(bio, error);
+	} else {
 
-	return 1;
+		/*
+		 * Okay, this is the barrier request in progress, just
+		 * record the error;
+		 */
+		if (error && !q->orderr)
+			q->orderr = error;
+	}
 }
 
 /**
@@ -1220,16 +1202,40 @@ EXPORT_SYMBOL(blk_dump_rq_flags);
 
 void blk_recount_segments(struct request_queue *q, struct bio *bio)
 {
+	struct request rq;
+	struct bio *nxt = bio->bi_next;
+	rq.q = q;
+	rq.bio = rq.biotail = bio;
+	bio->bi_next = NULL;
+	blk_recalc_rq_segments(&rq);
+	bio->bi_next = nxt;
+	bio->bi_phys_segments = rq.nr_phys_segments;
+	bio->bi_hw_segments = rq.nr_hw_segments;
+	bio->bi_flags |= (1 << BIO_SEG_VALID);
+}
+EXPORT_SYMBOL(blk_recount_segments);
+
+static void blk_recalc_rq_segments(struct request *rq)
+{
+	int nr_phys_segs;
+	int nr_hw_segs;
+	unsigned int phys_size;
+	unsigned int hw_size;
 	struct bio_vec *bv, *bvprv = NULL;
-	int i, nr_phys_segs, nr_hw_segs, seg_size, hw_seg_size, cluster;
+	int seg_size;
+	int hw_seg_size;
+	int cluster;
+	struct req_iterator iter;
 	int high, highprv = 1;
+	struct request_queue *q = rq->q;
 
-	if (unlikely(!bio->bi_io_vec))
+	if (!rq->bio)
 		return;
 
 	cluster = q->queue_flags & (1 << QUEUE_FLAG_CLUSTER);
-	hw_seg_size = seg_size = nr_phys_segs = nr_hw_segs = 0;
-	bio_for_each_segment(bv, bio, i) {
+	hw_seg_size = seg_size = 0;
+	phys_size = hw_size = nr_phys_segs = nr_hw_segs = 0;
+	rq_for_each_segment(bv, rq, iter) {
 		/*
 		 * the trick here is making sure that a high page is never
 		 * considered part of another segment, since that might
@@ -1255,12 +1261,13 @@ void blk_recount_segments(struct request_queue *q, struct bio *bio)
 		}
 new_segment:
 		if (BIOVEC_VIRT_MERGEABLE(bvprv, bv) &&
-		    !BIOVEC_VIRT_OVERSIZE(hw_seg_size + bv->bv_len)) {
+		    !BIOVEC_VIRT_OVERSIZE(hw_seg_size + bv->bv_len))
 			hw_seg_size += bv->bv_len;
-		} else {
+		else {
 new_hw_segment:
-			if (hw_seg_size > bio->bi_hw_front_size)
-				bio->bi_hw_front_size = hw_seg_size;
+			if (nr_hw_segs == 1 &&
+			    hw_seg_size > rq->bio->bi_hw_front_size)
+				rq->bio->bi_hw_front_size = hw_seg_size;
 			hw_seg_size = BIOVEC_VIRT_START_SIZE(bv) + bv->bv_len;
 			nr_hw_segs++;
 		}
@@ -1270,15 +1277,15 @@ new_hw_segment:
 		seg_size = bv->bv_len;
 		highprv = high;
 	}
-	if (hw_seg_size > bio->bi_hw_back_size)
-		bio->bi_hw_back_size = hw_seg_size;
-	if (nr_hw_segs == 1 && hw_seg_size > bio->bi_hw_front_size)
-		bio->bi_hw_front_size = hw_seg_size;
-	bio->bi_phys_segments = nr_phys_segs;
-	bio->bi_hw_segments = nr_hw_segs;
-	bio->bi_flags |= (1 << BIO_SEG_VALID);
+
+	if (nr_hw_segs == 1 &&
+	    hw_seg_size > rq->bio->bi_hw_front_size)
+		rq->bio->bi_hw_front_size = hw_seg_size;
+	if (hw_seg_size > rq->biotail->bi_hw_back_size)
+		rq->biotail->bi_hw_back_size = hw_seg_size;
+	rq->nr_phys_segments = nr_phys_segs;
+	rq->nr_hw_segments = nr_hw_segs;
 }
-EXPORT_SYMBOL(blk_recount_segments);
 
 static int blk_phys_contig_segment(struct request_queue *q, struct bio *bio,
 				   struct bio *nxt)
@@ -1325,8 +1332,8 @@ int blk_rq_map_sg(struct request_queue *q, struct request *rq,
 		  struct scatterlist *sg)
 {
 	struct bio_vec *bvec, *bvprv;
-	struct bio *bio;
-	int nsegs, i, cluster;
+	struct req_iterator iter;
+	int nsegs, cluster;
 
 	nsegs = 0;
 	cluster = q->queue_flags & (1 << QUEUE_FLAG_CLUSTER);
@@ -1335,35 +1342,30 @@ int blk_rq_map_sg(struct request_queue *q, struct request *rq,
 	 * for each bio in rq
 	 */
 	bvprv = NULL;
-	rq_for_each_bio(bio, rq) {
-		/*
-		 * for each segment in bio
-		 */
-		bio_for_each_segment(bvec, bio, i) {
-			int nbytes = bvec->bv_len;
+	rq_for_each_segment(bvec, rq, iter) {
+		int nbytes = bvec->bv_len;
 
-			if (bvprv && cluster) {
-				if (sg[nsegs - 1].length + nbytes > q->max_segment_size)
-					goto new_segment;
+		if (bvprv && cluster) {
+			if (sg[nsegs - 1].length + nbytes > q->max_segment_size)
+				goto new_segment;
 
-				if (!BIOVEC_PHYS_MERGEABLE(bvprv, bvec))
-					goto new_segment;
-				if (!BIOVEC_SEG_BOUNDARY(q, bvprv, bvec))
-					goto new_segment;
+			if (!BIOVEC_PHYS_MERGEABLE(bvprv, bvec))
+				goto new_segment;
+			if (!BIOVEC_SEG_BOUNDARY(q, bvprv, bvec))
+				goto new_segment;
 
-				sg[nsegs - 1].length += nbytes;
-			} else {
+			sg[nsegs - 1].length += nbytes;
+		} else {
 new_segment:
-				memset(&sg[nsegs],0,sizeof(struct scatterlist));
-				sg[nsegs].page = bvec->bv_page;
-				sg[nsegs].length = nbytes;
-				sg[nsegs].offset = bvec->bv_offset;
+			memset(&sg[nsegs],0,sizeof(struct scatterlist));
+			sg[nsegs].page = bvec->bv_page;
+			sg[nsegs].length = nbytes;
+			sg[nsegs].offset = bvec->bv_offset;
 
-				nsegs++;
-			}
-			bvprv = bvec;
-		} /* segments in bio */
-	} /* bios in rq */
+			nsegs++;
+		}
+		bvprv = bvec;
+	} /* segments in rq */
 
 	return nsegs;
 }
@@ -1420,7 +1422,8 @@ static inline int ll_new_hw_segment(struct request_queue *q,
 	return 1;
 }
 
-int ll_back_merge_fn(struct request_queue *q, struct request *req, struct bio *bio)
+static int ll_back_merge_fn(struct request_queue *q, struct request *req,
+			    struct bio *bio)
 {
 	unsigned short max_sectors;
 	int len;
@@ -1456,7 +1459,6 @@ int ll_back_merge_fn(struct request_queue *q, struct request *req, struct bio *b
 
 	return ll_new_hw_segment(q, req, bio);
 }
-EXPORT_SYMBOL(ll_back_merge_fn);
 
 static int ll_front_merge_fn(struct request_queue *q, struct request *req, 
 			     struct bio *bio)
@@ -2346,6 +2348,23 @@ static int __blk_rq_unmap_user(struct bio *bio)
 	return ret;
 }
 
+int blk_rq_append_bio(struct request_queue *q, struct request *rq,
+		      struct bio *bio)
+{
+	if (!rq->bio)
+		blk_rq_bio_prep(q, rq, bio);
+	else if (!ll_back_merge_fn(q, rq, bio))
+		return -EINVAL;
+	else {
+		rq->biotail->bi_next = bio;
+		rq->biotail = bio;
+
+		rq->data_len += bio->bi_size;
+	}
+	return 0;
+}
+EXPORT_SYMBOL(blk_rq_append_bio);
+
 static int __blk_rq_map_user(struct request_queue *q, struct request *rq,
 			     void __user *ubuf, unsigned int len)
 {
@@ -2377,23 +2396,12 @@ static int __blk_rq_map_user(struct request_queue *q, struct request *rq,
 	 */
 	bio_get(bio);
 
-	if (!rq->bio)
-		blk_rq_bio_prep(q, rq, bio);
-	else if (!ll_back_merge_fn(q, rq, bio)) {
-		ret = -EINVAL;
-		goto unmap_bio;
-	} else {
-		rq->biotail->bi_next = bio;
-		rq->biotail = bio;
-
-		rq->data_len += bio->bi_size;
-	}
-
-	return bio->bi_size;
+	ret = blk_rq_append_bio(q, rq, bio);
+	if (!ret)
+		return bio->bi_size;
 
-unmap_bio:
 	/* if it was boucned we must call the end io function */
-	bio_endio(bio, bio->bi_size, 0);
+	bio_endio(bio, 0);
 	__blk_rq_unmap_user(orig_bio);
 	bio_put(bio);
 	return ret;
@@ -2502,7 +2510,7 @@ int blk_rq_map_user_iov(struct request_queue *q, struct request *rq,
 		return PTR_ERR(bio);
 
 	if (bio->bi_size != len) {
-		bio_endio(bio, bio->bi_size, 0);
+		bio_endio(bio, 0);
 		bio_unmap_user(bio);
 		return -EINVAL;
 	}
@@ -2912,15 +2920,9 @@ static void init_request_from_bio(struct request *req, struct bio *bio)
 
 	req->errors = 0;
 	req->hard_sector = req->sector = bio->bi_sector;
-	req->hard_nr_sectors = req->nr_sectors = bio_sectors(bio);
-	req->current_nr_sectors = req->hard_cur_sectors = bio_cur_sectors(bio);
-	req->nr_phys_segments = bio_phys_segments(req->q, bio);
-	req->nr_hw_segments = bio_hw_segments(req->q, bio);
-	req->buffer = bio_data(bio);	/* see ->buffer comment above */
-	req->bio = req->biotail = bio;
 	req->ioprio = bio_prio(bio);
-	req->rq_disk = bio->bi_bdev->bd_disk;
 	req->start_time = jiffies;
+	blk_rq_bio_prep(req->q, req, bio);
 }
 
 static int __make_request(struct request_queue *q, struct bio *bio)
@@ -3038,7 +3040,7 @@ out:
 	return 0;
 
 end_io:
-	bio_endio(bio, nr_sectors << 9, err);
+	bio_endio(bio, err);
 	return 0;
 }
 
@@ -3185,7 +3187,7 @@ static inline void __generic_make_request(struct bio *bio)
 				bdevname(bio->bi_bdev, b),
 				(long long) bio->bi_sector);
 end_io:
-			bio_endio(bio, bio->bi_size, -EIO);
+			bio_endio(bio, -EIO);
 			break;
 		}
 
@@ -3329,48 +3331,6 @@ void submit_bio(int rw, struct bio *bio)
 
 EXPORT_SYMBOL(submit_bio);
 
-static void blk_recalc_rq_segments(struct request *rq)
-{
-	struct bio *bio, *prevbio = NULL;
-	int nr_phys_segs, nr_hw_segs;
-	unsigned int phys_size, hw_size;
-	struct request_queue *q = rq->q;
-
-	if (!rq->bio)
-		return;
-
-	phys_size = hw_size = nr_phys_segs = nr_hw_segs = 0;
-	rq_for_each_bio(bio, rq) {
-		/* Force bio hw/phys segs to be recalculated. */
-		bio->bi_flags &= ~(1 << BIO_SEG_VALID);
-
-		nr_phys_segs += bio_phys_segments(q, bio);
-		nr_hw_segs += bio_hw_segments(q, bio);
-		if (prevbio) {
-			int pseg = phys_size + prevbio->bi_size + bio->bi_size;
-			int hseg = hw_size + prevbio->bi_size + bio->bi_size;
-
-			if (blk_phys_contig_segment(q, prevbio, bio) &&
-			    pseg <= q->max_segment_size) {
-				nr_phys_segs--;
-				phys_size += prevbio->bi_size + bio->bi_size;
-			} else
-				phys_size = 0;
-
-			if (blk_hw_contig_segment(q, prevbio, bio) &&
-			    hseg <= q->max_segment_size) {
-				nr_hw_segs--;
-				hw_size += prevbio->bi_size + bio->bi_size;
-			} else
-				hw_size = 0;
-		}
-		prevbio = bio;
-	}
-
-	rq->nr_phys_segments = nr_phys_segs;
-	rq->nr_hw_segments = nr_hw_segs;
-}
-
 static void blk_recalc_rq_sectors(struct request *rq, int nsect)
 {
 	if (blk_fs_request(rq)) {
@@ -3442,8 +3402,7 @@ static int __end_that_request_first(struct request *req, int uptodate,
 		if (nr_bytes >= bio->bi_size) {
 			req->bio = bio->bi_next;
 			nbytes = bio->bi_size;
-			if (!ordered_bio_endio(req, bio, nbytes, error))
-				bio_endio(bio, nbytes, error);
+			req_bio_endio(req, bio, nbytes, error);
 			next_idx = 0;
 			bio_nbytes = 0;
 		} else {
@@ -3498,8 +3457,7 @@ static int __end_that_request_first(struct request *req, int uptodate,
 	 * if the request wasn't completed, update state
 	 */
 	if (bio_nbytes) {
-		if (!ordered_bio_endio(req, bio, bio_nbytes, error))
-			bio_endio(bio, bio_nbytes, error);
+		req_bio_endio(req, bio, bio_nbytes, error);
 		bio->bi_idx += next_idx;
 		bio_iovec(bio)->bv_offset += nr_bytes;
 		bio_iovec(bio)->bv_len -= nr_bytes;
@@ -3574,7 +3532,7 @@ static void blk_done_softirq(struct softirq_action *h)
 	}
 }
 
-static int blk_cpu_notify(struct notifier_block *self, unsigned long action,
+static int __cpuinit blk_cpu_notify(struct notifier_block *self, unsigned long action,
 			  void *hcpu)
 {
 	/*
@@ -3595,7 +3553,7 @@ static int blk_cpu_notify(struct notifier_block *self, unsigned long action,
 }
 
 
-static struct notifier_block __devinitdata blk_cpu_notifier = {
+static struct notifier_block blk_cpu_notifier __cpuinitdata = {
 	.notifier_call	= blk_cpu_notify,
 };
 
@@ -3680,8 +3638,8 @@ void end_request(struct request *req, int uptodate)
 
 EXPORT_SYMBOL(end_request);
 
-void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
-		     struct bio *bio)
+static void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
+			    struct bio *bio)
 {
 	/* first two bits are identical in rq->cmd_flags and bio->bi_rw */
 	rq->cmd_flags |= (bio->bi_rw & 3);
@@ -3695,9 +3653,10 @@ void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
 	rq->data_len = bio->bi_size;
 
 	rq->bio = rq->biotail = bio;
-}
 
-EXPORT_SYMBOL(blk_rq_bio_prep);
+	if (bio->bi_bdev)
+		rq->rq_disk = bio->bi_bdev->bd_disk;
+}
 
 int kblockd_schedule_work(struct work_struct *work)
 {

drivers/block/aoe/aoeblk.c

@@ -138,7 +138,7 @@ aoeblk_make_request(struct request_queue *q, struct bio *bio)
 	buf = mempool_alloc(d->bufpool, GFP_NOIO);
 	if (buf == NULL) {
 		printk(KERN_INFO "aoe: buf allocation failure\n");
-		bio_endio(bio, bio->bi_size, -ENOMEM);
+		bio_endio(bio, -ENOMEM);
 		return 0;
 	}
 	memset(buf, 0, sizeof(*buf));
@@ -159,7 +159,7 @@ aoeblk_make_request(struct request_queue *q, struct bio *bio)
 			d->aoemajor, d->aoeminor);
 		spin_unlock_irqrestore(&d->lock, flags);
 		mempool_free(buf, d->bufpool);
-		bio_endio(bio, bio->bi_size, -ENXIO);
+		bio_endio(bio, -ENXIO);
 		return 0;
 	}
 

drivers/block/aoe/aoecmd.c

@@ -652,7 +652,7 @@ aoecmd_ata_rsp(struct sk_buff *skb)
 			disk_stat_add(disk, sectors[rw], n_sect);
 			disk_stat_add(disk, io_ticks, duration);
 			n = (buf->flags & BUFFL_FAIL) ? -EIO : 0;
-			bio_endio(buf->bio, buf->bio->bi_size, n);
+			bio_endio(buf->bio, n);
 			mempool_free(buf, d->bufpool);
 		}
 	}

drivers/block/aoe/aoedev.c

@@ -119,7 +119,7 @@ aoedev_downdev(struct aoedev *d)
 		bio = buf->bio;
 		if (--buf->nframesout == 0) {
 			mempool_free(buf, d->bufpool);
-			bio_endio(bio, bio->bi_size, -EIO);
+			bio_endio(bio, -EIO);
 		}
 		skb_shinfo(f->skb)->nr_frags = f->skb->data_len = 0;
 	}
@@ -130,7 +130,7 @@ aoedev_downdev(struct aoedev *d)
 		list_del(d->bufq.next);
 		bio = buf->bio;
 		mempool_free(buf, d->bufpool);
-		bio_endio(bio, bio->bi_size, -EIO);
+		bio_endio(bio, -EIO);
 	}
 
 	if (d->gd)

drivers/block/cciss.c

@@ -1194,7 +1194,7 @@ static inline void complete_buffers(struct bio *bio, int status)
 		int nr_sectors = bio_sectors(bio);
 
 		bio->bi_next = NULL;
-		bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
+		bio_endio(bio, status ? 0 : -EIO);
 		bio = xbh;
 	}
 }

drivers/block/cpqarray.c

@@ -987,7 +987,7 @@ static inline void complete_buffers(struct bio *bio, int ok)
 		xbh = bio->bi_next;
 		bio->bi_next = NULL;
 		
-		bio_endio(bio, nr_sectors << 9, ok ? 0 : -EIO);
+		bio_endio(bio, ok ? 0 : -EIO);
 
 		bio = xbh;
 	}

drivers/block/floppy.c

@@ -2437,22 +2437,19 @@ static void rw_interrupt(void)
 /* Compute maximal contiguous buffer size. */
 static int buffer_chain_size(void)
 {
-	struct bio *bio;
 	struct bio_vec *bv;
-	int size, i;
+	int size;
+	struct req_iterator iter;
 	char *base;
 
 	base = bio_data(current_req->bio);
 	size = 0;
 
-	rq_for_each_bio(bio, current_req) {
-		bio_for_each_segment(bv, bio, i) {
-			if (page_address(bv->bv_page) + bv->bv_offset !=
-			    base + size)
-				break;
+	rq_for_each_segment(bv, current_req, iter) {
+		if (page_address(bv->bv_page) + bv->bv_offset != base + size)
+			break;
 
-			size += bv->bv_len;
-		}
+		size += bv->bv_len;
 	}
 
 	return size >> 9;
@@ -2479,9 +2476,9 @@ static void copy_buffer(int ssize, int max_sector, int max_sector_2)
 {
 	int remaining;		/* number of transferred 512-byte sectors */
 	struct bio_vec *bv;
-	struct bio *bio;
 	char *buffer, *dma_buffer;
-	int size, i;
+	int size;
+	struct req_iterator iter;
 
 	max_sector = transfer_size(ssize,
 				   min(max_sector, max_sector_2),
@@ -2514,43 +2511,41 @@ static void copy_buffer(int ssize, int max_sector, int max_sector_2)
 
 	size = current_req->current_nr_sectors << 9;
 
-	rq_for_each_bio(bio, current_req) {
-		bio_for_each_segment(bv, bio, i) {
-			if (!remaining)
-				break;
+	rq_for_each_segment(bv, current_req, iter) {
+		if (!remaining)
+			break;
 
-			size = bv->bv_len;
-			SUPBOUND(size, remaining);
+		size = bv->bv_len;
+		SUPBOUND(size, remaining);
 
-			buffer = page_address(bv->bv_page) + bv->bv_offset;
+		buffer = page_address(bv->bv_page) + bv->bv_offset;
 #ifdef FLOPPY_SANITY_CHECK
-			if (dma_buffer + size >
-			    floppy_track_buffer + (max_buffer_sectors << 10) ||
-			    dma_buffer < floppy_track_buffer) {
-				DPRINT("buffer overrun in copy buffer %d\n",
-				       (int)((floppy_track_buffer -
-					      dma_buffer) >> 9));
-				printk("fsector_t=%d buffer_min=%d\n",
-				       fsector_t, buffer_min);
-				printk("current_count_sectors=%ld\n",
-				       current_count_sectors);
-				if (CT(COMMAND) == FD_READ)
-					printk("read\n");
-				if (CT(COMMAND) == FD_WRITE)
-					printk("write\n");
-				break;
-			}
-			if (((unsigned long)buffer) % 512)
-				DPRINT("%p buffer not aligned\n", buffer);
-#endif
+		if (dma_buffer + size >
+		    floppy_track_buffer + (max_buffer_sectors << 10) ||
+		    dma_buffer < floppy_track_buffer) {
+			DPRINT("buffer overrun in copy buffer %d\n",
+			       (int)((floppy_track_buffer -
+				      dma_buffer) >> 9));
+			printk("fsector_t=%d buffer_min=%d\n",
+			       fsector_t, buffer_min);
+			printk("current_count_sectors=%ld\n",
+			       current_count_sectors);
 			if (CT(COMMAND) == FD_READ)
-				memcpy(buffer, dma_buffer, size);
-			else
-				memcpy(dma_buffer, buffer, size);
-
-			remaining -= size;
-			dma_buffer += size;
+				printk("read\n");
+			if (CT(COMMAND) == FD_WRITE)
+				printk("write\n");
+			break;
 		}
+		if (((unsigned long)buffer) % 512)
+			DPRINT("%p buffer not aligned\n", buffer);
+#endif
+		if (CT(COMMAND) == FD_READ)
+			memcpy(buffer, dma_buffer, size);
+		else
+			memcpy(dma_buffer, buffer, size);
+
+		remaining -= size;
+		dma_buffer += size;
 	}
 #ifdef FLOPPY_SANITY_CHECK
 	if (remaining) {
@@ -3815,14 +3810,10 @@ static int check_floppy_change(struct gendisk *disk)
  * a disk in the drive, and whether that disk is writable.
  */
 
-static int floppy_rb0_complete(struct bio *bio, unsigned int bytes_done,
+static void floppy_rb0_complete(struct bio *bio,
 			       int err)
 {
-	if (bio->bi_size)
-		return 1;
-
 	complete((struct completion *)bio->bi_private);
-	return 0;
 }
 
 static int __floppy_read_block_0(struct block_device *bdev)

drivers/block/lguest_blk.c

@@ -142,25 +142,23 @@ static irqreturn_t lgb_irq(int irq, void *_bd)
  * return the total length. */
 static unsigned int req_to_dma(struct request *req, struct lguest_dma *dma)
 {
-	unsigned int i = 0, idx, len = 0;
-	struct bio *bio;
-
-	rq_for_each_bio(bio, req) {
-		struct bio_vec *bvec;
-		bio_for_each_segment(bvec, bio, idx) {
-			/* We told the block layer not to give us too many. */
-			BUG_ON(i == LGUEST_MAX_DMA_SECTIONS);
-			/* If we had a zero-length segment, it would look like
-			 * the end of the data referred to by the "struct
-			 * lguest_dma", so make sure that doesn't happen. */
-			BUG_ON(!bvec->bv_len);
-			/* Convert page & offset to a physical address */
-			dma->addr[i] = page_to_phys(bvec->bv_page)
-				+ bvec->bv_offset;
-			dma->len[i] = bvec->bv_len;
-			len += bvec->bv_len;
-			i++;
-		}
+	unsigned int i = 0, len = 0;
+	struct req_iterator iter;
+	struct bio_vec *bvec;
+
+	rq_for_each_segment(bvec, req, iter) {
+		/* We told the block layer not to give us too many. */
+		BUG_ON(i == LGUEST_MAX_DMA_SECTIONS);
+		/* If we had a zero-length segment, it would look like
+		 * the end of the data referred to by the "struct
+		 * lguest_dma", so make sure that doesn't happen. */
+		BUG_ON(!bvec->bv_len);
+		/* Convert page & offset to a physical address */
+		dma->addr[i] = page_to_phys(bvec->bv_page)
+			+ bvec->bv_offset;
+		dma->len[i] = bvec->bv_len;
+		len += bvec->bv_len;
+		i++;
 	}
 	/* If the array isn't full, we mark the end with a 0 length */
 	if (i < LGUEST_MAX_DMA_SECTIONS)

drivers/block/loop.c

@@ -551,7 +551,7 @@ static int loop_make_request(struct request_queue *q, struct bio *old_bio)
 
 out:
 	spin_unlock_irq(&lo->lo_lock);
-	bio_io_error(old_bio, old_bio->bi_size);
+	bio_io_error(old_bio);
 	return 0;
 }
 
@@ -580,7 +580,7 @@ static inline void loop_handle_bio(struct loop_device *lo, struct bio *bio)
 		bio_put(bio);
 	} else {
 		int ret = do_bio_filebacked(lo, bio);
-		bio_endio(bio, bio->bi_size, ret);
+		bio_endio(bio, ret);
 	}
 }
 

drivers/block/nbd.c

@@ -180,7 +180,7 @@ static inline int sock_send_bvec(struct socket *sock, struct bio_vec *bvec,
 
 static int nbd_send_req(struct nbd_device *lo, struct request *req)
 {
-	int result, i, flags;
+	int result, flags;
 	struct nbd_request request;
 	unsigned long size = req->nr_sectors << 9;
 	struct socket *sock = lo->sock;
@@ -205,27 +205,23 @@ static int nbd_send_req(struct nbd_device *lo, struct request *req)
 	}
 
 	if (nbd_cmd(req) == NBD_CMD_WRITE) {
-		struct bio *bio;
+		struct req_iterator iter;
+		struct bio_vec *bvec;
 		/*
 		 * we are really probing at internals to determine
 		 * whether to set MSG_MORE or not...
 		 */
-		rq_for_each_bio(bio, req) {
-			struct bio_vec *bvec;
-			bio_for_each_segment(bvec, bio, i) {
-				flags = 0;
-				if ((i < (bio->bi_vcnt - 1)) || bio->bi_next)
-					flags = MSG_MORE;
-				dprintk(DBG_TX, "%s: request %p: sending %d bytes data\n",
-						lo->disk->disk_name, req,
-						bvec->bv_len);
-				result = sock_send_bvec(sock, bvec, flags);
-				if (result <= 0) {
-					printk(KERN_ERR "%s: Send data failed (result %d)\n",
-							lo->disk->disk_name,
-							result);
-					goto error_out;
-				}
+		rq_for_each_segment(bvec, req, iter) {
+			flags = 0;
+			if (!rq_iter_last(req, iter))
+				flags = MSG_MORE;
+			dprintk(DBG_TX, "%s: request %p: sending %d bytes data\n",
+					lo->disk->disk_name, req, bvec->bv_len);
+			result = sock_send_bvec(sock, bvec, flags);
+			if (result <= 0) {
+				printk(KERN_ERR "%s: Send data failed (result %d)\n",
+						lo->disk->disk_name, result);
+				goto error_out;
 			}
 		}
 	}
@@ -321,22 +317,19 @@ static struct request *nbd_read_stat(struct nbd_device *lo)
 	dprintk(DBG_RX, "%s: request %p: got reply\n",
 			lo->disk->disk_name, req);
 	if (nbd_cmd(req) == NBD_CMD_READ) {
-		int i;
-		struct bio *bio;
-		rq_for_each_bio(bio, req) {
-			struct bio_vec *bvec;
-			bio_for_each_segment(bvec, bio, i) {
-				result = sock_recv_bvec(sock, bvec);
-				if (result <= 0) {
-					printk(KERN_ERR "%s: Receive data failed (result %d)\n",
-							lo->disk->disk_name,
-							result);
-					req->errors++;
-					return req;
-				}
-				dprintk(DBG_RX, "%s: request %p: got %d bytes data\n",
-					lo->disk->disk_name, req, bvec->bv_len);
+		struct req_iterator iter;
+		struct bio_vec *bvec;
+
+		rq_for_each_segment(bvec, req, iter) {
+			result = sock_recv_bvec(sock, bvec);
+			if (result <= 0) {
+				printk(KERN_ERR "%s: Receive data failed (result %d)\n",
+						lo->disk->disk_name, result);
+				req->errors++;
+				return req;
 			}
+			dprintk(DBG_RX, "%s: request %p: got %d bytes data\n",
+				lo->disk->disk_name, req, bvec->bv_len);
 		}
 	}
 	return req;

drivers/block/pktcdvd.c

@@ -1058,15 +1058,12 @@ static void pkt_make_local_copy(struct packet_data *pkt, struct bio_vec *bvec)
 	}
 }
 
-static int pkt_end_io_read(struct bio *bio, unsigned int bytes_done, int err)
+static void pkt_end_io_read(struct bio *bio, int err)
 {
 	struct packet_data *pkt = bio->bi_private;
 	struct pktcdvd_device *pd = pkt->pd;
 	BUG_ON(!pd);
 
-	if (bio->bi_size)
-		return 1;
-
 	VPRINTK("pkt_end_io_read: bio=%p sec0=%llx sec=%llx err=%d\n", bio,
 		(unsigned long long)pkt->sector, (unsigned long long)bio->bi_sector, err);
 
@@ -1077,19 +1074,14 @@ static int pkt_end_io_read(struct bio *bio, unsigned int bytes_done, int err)
 		wake_up(&pd->wqueue);
 	}
 	pkt_bio_finished(pd);
-
-	return 0;
 }
 
-static int pkt_end_io_packet_write(struct bio *bio, unsigned int bytes_done, int err)
+static void pkt_end_io_packet_write(struct bio *bio, int err)
 {
 	struct packet_data *pkt = bio->bi_private;
 	struct pktcdvd_device *pd = pkt->pd;
 	BUG_ON(!pd);
 
-	if (bio->bi_size)
-		return 1;
-
 	VPRINTK("pkt_end_io_packet_write: id=%d, err=%d\n", pkt->id, err);
 
 	pd->stats.pkt_ended++;
@@ -1098,7 +1090,6 @@ static int pkt_end_io_packet_write(struct bio *bio, unsigned int bytes_done, int
 	atomic_dec(&pkt->io_wait);
 	atomic_inc(&pkt->run_sm);
 	wake_up(&pd->wqueue);
-	return 0;
 }
 
 /*
@@ -1470,7 +1461,7 @@ static void pkt_finish_packet(struct packet_data *pkt, int uptodate)
 	while (bio) {
 		next = bio->bi_next;
 		bio->bi_next = NULL;
-		bio_endio(bio, bio->bi_size, uptodate ? 0 : -EIO);
+		bio_endio(bio, uptodate ? 0 : -EIO);
 		bio = next;
 	}
 	pkt->orig_bios = pkt->orig_bios_tail = NULL;
@@ -2462,19 +2453,15 @@ static int pkt_close(struct inode *inode, struct file *file)
 }
 
 
-static int pkt_end_io_read_cloned(struct bio *bio, unsigned int bytes_done, int err)
+static void pkt_end_io_read_cloned(struct bio *bio, int err)
 {
 	struct packet_stacked_data *psd = bio->bi_private;
 	struct pktcdvd_device *pd = psd->pd;
 
-	if (bio->bi_size)
-		return 1;
-
 	bio_put(bio);
-	bio_endio(psd->bio, psd->bio->bi_size, err);
+	bio_endio(psd->bio, err);
 	mempool_free(psd, psd_pool);
 	pkt_bio_finished(pd);
-	return 0;
 }
 
 static int pkt_make_request(struct request_queue *q, struct bio *bio)
@@ -2620,7 +2607,7 @@ static int pkt_make_request(struct request_queue *q, struct bio *bio)
 	}
 	return 0;
 end_io:
-	bio_io_error(bio, bio->bi_size);
+	bio_io_error(bio);
 	return 0;
 }
 

drivers/block/ps3disk.c

@@ -91,30 +91,29 @@ static void ps3disk_scatter_gather(struct ps3_storage_device *dev,
 				   struct request *req, int gather)
 {
 	unsigned int offset = 0;
-	struct bio *bio;
-	sector_t sector;
+	struct req_iterator iter;
 	struct bio_vec *bvec;
-	unsigned int i = 0, j;
+	unsigned int i = 0;
 	size_t size;
 	void *buf;
 
-	rq_for_each_bio(bio, req) {
-		sector = bio->bi_sector;
+	rq_for_each_segment(bvec, req, iter) {
+		unsigned long flags;
 		dev_dbg(&dev->sbd.core,
 			"%s:%u: bio %u: %u segs %u sectors from %lu\n",
-			__func__, __LINE__, i, bio_segments(bio),
-			bio_sectors(bio), sector);
-		bio_for_each_segment(bvec, bio, j) {
-			size = bvec->bv_len;
-			buf = __bio_kmap_atomic(bio, j, KM_IRQ0);
-			if (gather)
-				memcpy(dev->bounce_buf+offset, buf, size);
-			else
-				memcpy(buf, dev->bounce_buf+offset, size);
-			offset += size;
-			flush_kernel_dcache_page(bio_iovec_idx(bio, j)->bv_page);
-			__bio_kunmap_atomic(bio, KM_IRQ0);
-		}
+			__func__, __LINE__, i, bio_segments(iter.bio),
+			bio_sectors(iter.bio),
+			(unsigned long)iter.bio->bi_sector);
+
+		size = bvec->bv_len;
+		buf = bvec_kmap_irq(bvec, &flags);
+		if (gather)
+			memcpy(dev->bounce_buf+offset, buf, size);
+		else
+			memcpy(buf, dev->bounce_buf+offset, size);
+		offset += size;
+		flush_kernel_dcache_page(bvec->bv_page);
+		bvec_kunmap_irq(bvec, &flags);
 		i++;
 	}
 }
@@ -130,12 +129,13 @@ static int ps3disk_submit_request_sg(struct ps3_storage_device *dev,
 
 #ifdef DEBUG
 	unsigned int n = 0;
-	struct bio *bio;
+	struct bio_vec *bv;
+	struct req_iterator iter;
 
-	rq_for_each_bio(bio, req)
+	rq_for_each_segment(bv, req, iter)
 		n++;
 	dev_dbg(&dev->sbd.core,
-		"%s:%u: %s req has %u bios for %lu sectors %lu hard sectors\n",
+		"%s:%u: %s req has %u bvecs for %lu sectors %lu hard sectors\n",
 		__func__, __LINE__, op, n, req->nr_sectors,
 		req->hard_nr_sectors);
 #endif

drivers/block/rd.c

@@ -287,10 +287,10 @@ static int rd_make_request(struct request_queue *q, struct bio *bio)
 	if (ret)
 		goto fail;
 
-	bio_endio(bio, bio->bi_size, 0);
+	bio_endio(bio, 0);
 	return 0;
 fail:
-	bio_io_error(bio, bio->bi_size);
+	bio_io_error(bio);
 	return 0;
 } 
 

drivers/block/umem.c

@@ -52,7 +52,7 @@
 #include <linux/fcntl.h>        /* O_ACCMODE */
 #include <linux/hdreg.h>  /* HDIO_GETGEO */
 
-#include <linux/umem.h>
+#include "umem.h"
 
 #include <asm/uaccess.h>
 #include <asm/io.h>
@@ -67,9 +67,10 @@
  * Version Information
  */
 
-#define DRIVER_VERSION "v2.3"
-#define DRIVER_AUTHOR "San Mehat, Johannes Erdfelt, NeilBrown"
-#define DRIVER_DESC "Micro Memory(tm) PCI memory board block driver"
+#define DRIVER_NAME	"umem"
+#define DRIVER_VERSION	"v2.3"
+#define DRIVER_AUTHOR	"San Mehat, Johannes Erdfelt, NeilBrown"
+#define DRIVER_DESC	"Micro Memory(tm) PCI memory board block driver"
 
 static int debug;
 /* #define HW_TRACE(x)     writeb(x,cards[0].csr_remap + MEMCTRLSTATUS_MAGIC) */
@@ -97,15 +98,9 @@ static int major_nr;
 #include <linux/blkpg.h>
 
 struct cardinfo {
-	int		card_number;
 	struct pci_dev	*dev;
 
-	int		irq;
-
-	unsigned long	csr_base;
 	unsigned char	__iomem *csr_remap;
-	unsigned long	csr_len;
-	unsigned int	win_size; /* PCI window size */
 	unsigned int	mm_size;  /* size in kbytes */
 
 	unsigned int	init_size; /* initial segment, in sectors,
@@ -113,6 +108,8 @@ struct cardinfo {
 				    * have been written
 				    */
 	struct bio	*bio, *currentbio, **biotail;
+	int		current_idx;
+	sector_t	current_sector;
 
 	struct request_queue *queue;
 
@@ -121,6 +118,7 @@ struct cardinfo {
 		struct mm_dma_desc	*desc;
 		int	 		cnt, headcnt;
 		struct bio		*bio, **biotail;
+		int			idx;
 	} mm_pages[2];
 #define DESC_PER_PAGE ((PAGE_SIZE*2)/sizeof(struct mm_dma_desc))
 
@@ -233,7 +231,7 @@ static void dump_regs(struct cardinfo *card)
 */
 static void dump_dmastat(struct cardinfo *card, unsigned int dmastat)
 {
-	printk(KERN_DEBUG "MM%d*: DMAstat - ", card->card_number);
+	dev_printk(KERN_DEBUG, &card->dev->dev, "DMAstat - ");
 	if (dmastat & DMASCR_ANY_ERR)
 		printk("ANY_ERR ");
 	if (dmastat & DMASCR_MBE_ERR)
@@ -295,7 +293,7 @@ static void mm_start_io(struct cardinfo *card)
 	desc->control_bits &= ~cpu_to_le32(DMASCR_CHAIN_EN);
 	desc->sem_control_bits = desc->control_bits;
 
-			       
+
 	if (debug & DEBUG_LED_ON_TRANSFER)
 		set_led(card, LED_REMOVE, LED_ON);
 
@@ -329,7 +327,7 @@ static int add_bio(struct cardinfo *card);
 
 static void activate(struct cardinfo *card)
 {
-	/* if No page is Active, and Ready is 
+	/* if No page is Active, and Ready is
 	 * not empty, then switch Ready page
 	 * to active and start IO.
 	 * Then add any bh's that are available to Ready
@@ -368,7 +366,7 @@ static void mm_unplug_device(struct request_queue *q)
 	spin_unlock_irqrestore(&card->lock, flags);
 }
 
-/* 
+/*
  * If there is room on Ready page, take
  * one bh off list and add it.
  * return 1 if there was room, else 0.
@@ -380,12 +378,16 @@ static int add_bio(struct cardinfo *card)
 	dma_addr_t dma_handle;
 	int offset;
 	struct bio *bio;
+	struct bio_vec *vec;
+	int idx;
 	int rw;
 	int len;
 
 	bio = card->currentbio;
 	if (!bio && card->bio) {
 		card->currentbio = card->bio;
+		card->current_idx = card->bio->bi_idx;
+		card->current_sector = card->bio->bi_sector;
 		card->bio = card->bio->bi_next;
 		if (card->bio == NULL)
 			card->biotail = &card->bio;
@@ -394,15 +396,17 @@ static int add_bio(struct cardinfo *card)
 	}
 	if (!bio)
 		return 0;
+	idx = card->current_idx;
 
 	rw = bio_rw(bio);
 	if (card->mm_pages[card->Ready].cnt >= DESC_PER_PAGE)
 		return 0;
 
-	len = bio_iovec(bio)->bv_len;
-	dma_handle = pci_map_page(card->dev, 
-				  bio_page(bio),
-				  bio_offset(bio),
+	vec = bio_iovec_idx(bio, idx);
+	len = vec->bv_len;
+	dma_handle = pci_map_page(card->dev,
+				  vec->bv_page,
+				  vec->bv_offset,
 				  len,
 				  (rw==READ) ?
 				  PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
@@ -410,6 +414,8 @@ static int add_bio(struct cardinfo *card)
 	p = &card->mm_pages[card->Ready];
 	desc = &p->desc[p->cnt];
 	p->cnt++;
+	if (p->bio == NULL)
+		p->idx = idx;
 	if ((p->biotail) != &bio->bi_next) {
 		*(p->biotail) = bio;
 		p->biotail = &(bio->bi_next);
@@ -419,7 +425,7 @@ static int add_bio(struct cardinfo *card)
 	desc->data_dma_handle = dma_handle;
 
 	desc->pci_addr = cpu_to_le64((u64)desc->data_dma_handle);
-	desc->local_addr= cpu_to_le64(bio->bi_sector << 9);
+	desc->local_addr = cpu_to_le64(card->current_sector << 9);
 	desc->transfer_size = cpu_to_le32(len);
 	offset = ( ((char*)&desc->sem_control_bits) - ((char*)p->desc));
 	desc->sem_addr = cpu_to_le64((u64)(p->page_dma+offset));
@@ -435,10 +441,10 @@ static int add_bio(struct cardinfo *card)
 		desc->control_bits |= cpu_to_le32(DMASCR_TRANSFER_READ);
 	desc->sem_control_bits = desc->control_bits;
 
-	bio->bi_sector += (len>>9);
-	bio->bi_size -= len;
-	bio->bi_idx++;
-	if (bio->bi_idx >= bio->bi_vcnt) 
+	card->current_sector += (len >> 9);
+	idx++;
+	card->current_idx = idx;
+	if (idx >= bio->bi_vcnt)
 		card->currentbio = NULL;
 
 	return 1;
@@ -461,7 +467,7 @@ static void process_page(unsigned long data)
 	if (card->Active < 0)
 		goto out_unlock;
 	page = &card->mm_pages[card->Active];
-	
+
 	while (page->headcnt < page->cnt) {
 		struct bio *bio = page->bio;
 		struct mm_dma_desc *desc = &page->desc[page->headcnt];
@@ -471,32 +477,34 @@ static void process_page(unsigned long data)
 
 		if (!(control & DMASCR_DMA_COMPLETE)) {
 			control = dma_status;
-			last=1; 
+			last=1;
 		}
 		page->headcnt++;
-		idx = bio->bi_phys_segments;
-		bio->bi_phys_segments++;
-		if (bio->bi_phys_segments >= bio->bi_vcnt)
+		idx = page->idx;
+		page->idx++;
+		if (page->idx >= bio->bi_vcnt) {
 			page->bio = bio->bi_next;
+			page->idx = page->bio->bi_idx;
+		}
 
-		pci_unmap_page(card->dev, desc->data_dma_handle, 
+		pci_unmap_page(card->dev, desc->data_dma_handle,
 			       bio_iovec_idx(bio,idx)->bv_len,
 				 (control& DMASCR_TRANSFER_READ) ?
 				PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
 		if (control & DMASCR_HARD_ERROR) {
 			/* error */
 			clear_bit(BIO_UPTODATE, &bio->bi_flags);
-			printk(KERN_WARNING "MM%d: I/O error on sector %d/%d\n",
-			       card->card_number, 
-			       le32_to_cpu(desc->local_addr)>>9,
-			       le32_to_cpu(desc->transfer_size));
+			dev_printk(KERN_WARNING, &card->dev->dev,
+				"I/O error on sector %d/%d\n",
+				le32_to_cpu(desc->local_addr)>>9,
+				le32_to_cpu(desc->transfer_size));
 			dump_dmastat(card, control);
 		} else if (test_bit(BIO_RW, &bio->bi_rw) &&
 			   le32_to_cpu(desc->local_addr)>>9 == card->init_size) {
 			card->init_size += le32_to_cpu(desc->transfer_size)>>9;
 			if (card->init_size>>1 >= card->mm_size) {
-				printk(KERN_INFO "MM%d: memory now initialised\n",
-				       card->card_number);
+				dev_printk(KERN_INFO, &card->dev->dev,
+					"memory now initialised\n");
 				set_userbit(card, MEMORY_INITIALIZED, 1);
 			}
 		}
@@ -532,7 +540,7 @@ static void process_page(unsigned long data)
 
 		return_bio = bio->bi_next;
 		bio->bi_next = NULL;
-		bio_endio(bio, bio->bi_size, 0);
+		bio_endio(bio, 0);
 	}
 }
 
@@ -547,7 +555,6 @@ static int mm_make_request(struct request_queue *q, struct bio *bio)
 	pr_debug("mm_make_request %llu %u\n",
 		 (unsigned long long)bio->bi_sector, bio->bi_size);
 
-	bio->bi_phys_segments = bio->bi_idx; /* count of completed segments*/
 	spin_lock_irq(&card->lock);
 	*card->biotail = bio;
 	bio->bi_next = NULL;
@@ -585,7 +592,7 @@ HW_TRACE(0x30);
 	else
 		writeb((DMASCR_DMA_COMPLETE|DMASCR_CHAIN_COMPLETE) >> 16,
 		       card->csr_remap+ DMA_STATUS_CTRL + 2);
-	
+
 	/* log errors and clear interrupt status */
 	if (dma_status & DMASCR_ANY_ERR) {
 		unsigned int	data_log1, data_log2;
@@ -606,46 +613,51 @@ HW_TRACE(0x30);
 		dump_dmastat(card, dma_status);
 
 		if (stat & 0x01)
-			printk(KERN_ERR "MM%d*: Memory access error detected (err count %d)\n",
-				card->card_number, count);
+			dev_printk(KERN_ERR, &card->dev->dev,
+				"Memory access error detected (err count %d)\n",
+				count);
 		if (stat & 0x02)
-			printk(KERN_ERR "MM%d*: Multi-bit EDC error\n",
-				card->card_number);
+			dev_printk(KERN_ERR, &card->dev->dev,
+				"Multi-bit EDC error\n");
 
-		printk(KERN_ERR "MM%d*: Fault Address 0x%02x%08x, Fault Data 0x%08x%08x\n",
-			card->card_number, addr_log2, addr_log1, data_log2, data_log1);
-		printk(KERN_ERR "MM%d*: Fault Check 0x%02x, Fault Syndrome 0x%02x\n",
-			card->card_number, check, syndrome);
+		dev_printk(KERN_ERR, &card->dev->dev,
+			"Fault Address 0x%02x%08x, Fault Data 0x%08x%08x\n",
+			addr_log2, addr_log1, data_log2, data_log1);
+		dev_printk(KERN_ERR, &card->dev->dev,
+			"Fault Check 0x%02x, Fault Syndrome 0x%02x\n",
+			check, syndrome);
 
 		writeb(0, card->csr_remap + ERROR_COUNT);
 	}
 
 	if (dma_status & DMASCR_PARITY_ERR_REP) {
-		printk(KERN_ERR "MM%d*: PARITY ERROR REPORTED\n", card->card_number);
+		dev_printk(KERN_ERR, &card->dev->dev,
+			"PARITY ERROR REPORTED\n");
 		pci_read_config_word(card->dev, PCI_STATUS, &cfg_status);
 		pci_write_config_word(card->dev, PCI_STATUS, cfg_status);
 	}
 
 	if (dma_status & DMASCR_PARITY_ERR_DET) {
-		printk(KERN_ERR "MM%d*: PARITY ERROR DETECTED\n", card->card_number); 
+		dev_printk(KERN_ERR, &card->dev->dev,
+			"PARITY ERROR DETECTED\n");
 		pci_read_config_word(card->dev, PCI_STATUS, &cfg_status);
 		pci_write_config_word(card->dev, PCI_STATUS, cfg_status);
 	}
 
 	if (dma_status & DMASCR_SYSTEM_ERR_SIG) {
-		printk(KERN_ERR "MM%d*: SYSTEM ERROR\n", card->card_number); 
+		dev_printk(KERN_ERR, &card->dev->dev, "SYSTEM ERROR\n");
 		pci_read_config_word(card->dev, PCI_STATUS, &cfg_status);
 		pci_write_config_word(card->dev, PCI_STATUS, cfg_status);
 	}
 
 	if (dma_status & DMASCR_TARGET_ABT) {
-		printk(KERN_ERR "MM%d*: TARGET ABORT\n", card->card_number); 
+		dev_printk(KERN_ERR, &card->dev->dev, "TARGET ABORT\n");
 		pci_read_config_word(card->dev, PCI_STATUS, &cfg_status);
 		pci_write_config_word(card->dev, PCI_STATUS, cfg_status);
 	}
 
 	if (dma_status & DMASCR_MASTER_ABT) {
-		printk(KERN_ERR "MM%d*: MASTER ABORT\n", card->card_number); 
+		dev_printk(KERN_ERR, &card->dev->dev, "MASTER ABORT\n");
 		pci_read_config_word(card->dev, PCI_STATUS, &cfg_status);
 		pci_write_config_word(card->dev, PCI_STATUS, cfg_status);
 	}
@@ -656,7 +668,7 @@ HW_TRACE(0x30);
 
 HW_TRACE(0x36);
 
-	return IRQ_HANDLED; 
+	return IRQ_HANDLED;
 }
 /*
 -----------------------------------------------------------------------------------
@@ -696,20 +708,20 @@ static int check_battery(struct cardinfo *card, int battery, int status)
 		card->battery[battery].last_change = jiffies;
 
 		if (card->battery[battery].good) {
-			printk(KERN_ERR "MM%d: Battery %d now good\n",
-				card->card_number, battery + 1);
+			dev_printk(KERN_ERR, &card->dev->dev,
+				"Battery %d now good\n", battery + 1);
 			card->battery[battery].warned = 0;
 		} else
-			printk(KERN_ERR "MM%d: Battery %d now FAILED\n",
-				card->card_number, battery + 1);
+			dev_printk(KERN_ERR, &card->dev->dev,
+				"Battery %d now FAILED\n", battery + 1);
 
 		return 1;
 	} else if (!card->battery[battery].good &&
 		   !card->battery[battery].warned &&
 		   time_after_eq(jiffies, card->battery[battery].last_change +
 				 (HZ * 60 * 60 * 5))) {
-		printk(KERN_ERR "MM%d: Battery %d still FAILED after 5 hours\n",
-			card->card_number, battery + 1);
+		dev_printk(KERN_ERR, &card->dev->dev,
+			"Battery %d still FAILED after 5 hours\n", battery + 1);
 		card->battery[battery].warned = 1;
 
 		return 1;
@@ -733,8 +745,8 @@ static void check_batteries(struct cardinfo *card)
 
 	status = readb(card->csr_remap + MEMCTRLSTATUS_BATTERY);
 	if (debug & DEBUG_BATTERY_POLLING)
-		printk(KERN_DEBUG "MM%d: checking battery status, 1 = %s, 2 = %s\n",
-		       card->card_number,
+		dev_printk(KERN_DEBUG, &card->dev->dev,
+			"checking battery status, 1 = %s, 2 = %s\n",
 		       (status & BATTERY_1_FAILURE) ? "FAILURE" : "OK",
 		       (status & BATTERY_2_FAILURE) ? "FAILURE" : "OK");
 
@@ -749,7 +761,7 @@ static void check_all_batteries(unsigned long ptr)
 {
 	int i;
 
-	for (i = 0; i < num_cards; i++) 
+	for (i = 0; i < num_cards; i++)
 		if (!(cards[i].flags & UM_FLAG_NO_BATT)) {
 			struct cardinfo *card = &cards[i];
 			spin_lock_bh(&card->lock);
@@ -853,45 +865,56 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
 	unsigned char	mem_present;
 	unsigned char	batt_status;
 	unsigned int	saved_bar, data;
+	unsigned long	csr_base;
+	unsigned long	csr_len;
 	int		magic_number;
+	static int	printed_version;
 
-	if (pci_enable_device(dev) < 0)
-		return -ENODEV;
+	if (!printed_version++)
+		printk(KERN_INFO DRIVER_VERSION " : " DRIVER_DESC "\n");
+
+	ret = pci_enable_device(dev);
+	if (ret)
+		return ret;
 
 	pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xF8);
 	pci_set_master(dev);
 
 	card->dev         = dev;
-	card->card_number = num_cards;
 
-	card->csr_base = pci_resource_start(dev, 0);
-	card->csr_len  = pci_resource_len(dev, 0);
+	csr_base = pci_resource_start(dev, 0);
+	csr_len  = pci_resource_len(dev, 0);
+	if (!csr_base || !csr_len)
+		return -ENODEV;
 
-	printk(KERN_INFO "Micro Memory(tm) controller #%d found at %02x:%02x (PCI Mem Module (Battery Backup))\n",
-	       card->card_number, dev->bus->number, dev->devfn);
+	dev_printk(KERN_INFO, &dev->dev,
+		"Micro Memory(tm) controller found (PCI Mem Module (Battery Backup))\n");
 
 	if (pci_set_dma_mask(dev, DMA_64BIT_MASK) &&
 	    pci_set_dma_mask(dev, DMA_32BIT_MASK)) {
-		printk(KERN_WARNING "MM%d: NO suitable DMA found\n",num_cards);
+		dev_printk(KERN_WARNING, &dev->dev, "NO suitable DMA found\n");
 		return  -ENOMEM;
 	}
-	if (!request_mem_region(card->csr_base, card->csr_len, "Micro Memory")) {
-		printk(KERN_ERR "MM%d: Unable to request memory region\n", card->card_number);
-		ret = -ENOMEM;
 
+	ret = pci_request_regions(dev, DRIVER_NAME);
+	if (ret) {
+		dev_printk(KERN_ERR, &card->dev->dev,
+			"Unable to request memory region\n");
 		goto failed_req_csr;
 	}
 
-	card->csr_remap = ioremap_nocache(card->csr_base, card->csr_len);
+	card->csr_remap = ioremap_nocache(csr_base, csr_len);
 	if (!card->csr_remap) {
-		printk(KERN_ERR "MM%d: Unable to remap memory region\n", card->card_number);
+		dev_printk(KERN_ERR, &card->dev->dev,
+			"Unable to remap memory region\n");
 		ret = -ENOMEM;
 
 		goto failed_remap_csr;
 	}
 
-	printk(KERN_INFO "MM%d: CSR 0x%08lx -> 0x%p (0x%lx)\n", card->card_number,
-	       card->csr_base, card->csr_remap, card->csr_len);
+	dev_printk(KERN_INFO, &card->dev->dev,
+		"CSR 0x%08lx -> 0x%p (0x%lx)\n",
+	       csr_base, card->csr_remap, csr_len);
 
 	switch(card->dev->device) {
 	case 0x5415:
@@ -915,7 +938,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
 	}
 
 	if (readb(card->csr_remap + MEMCTRLSTATUS_MAGIC) != magic_number) {
-		printk(KERN_ERR "MM%d: Magic number invalid\n", card->card_number);
+		dev_printk(KERN_ERR, &card->dev->dev, "Magic number invalid\n");
 		ret = -ENOMEM;
 		goto failed_magic;
 	}
@@ -928,7 +951,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
 						      &card->mm_pages[1].page_dma);
 	if (card->mm_pages[0].desc == NULL ||
 	    card->mm_pages[1].desc == NULL) {
-		printk(KERN_ERR "MM%d: alloc failed\n", card->card_number);
+		dev_printk(KERN_ERR, &card->dev->dev, "alloc failed\n");
 		goto failed_alloc;
 	}
 	reset_page(&card->mm_pages[0]);
@@ -949,7 +972,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
 	tasklet_init(&card->tasklet, process_page, (unsigned long)card);
 
 	card->check_batteries = 0;
-	
+
 	mem_present = readb(card->csr_remap + MEMCTRLSTATUS_MEMORY);
 	switch (mem_present) {
 	case MEM_128_MB:
@@ -982,12 +1005,13 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
 	card->battery[1].good = !(batt_status & BATTERY_2_FAILURE);
 	card->battery[0].last_change = card->battery[1].last_change = jiffies;
 
-	if (card->flags & UM_FLAG_NO_BATT) 
-		printk(KERN_INFO "MM%d: Size %d KB\n",
-		       card->card_number, card->mm_size);
+	if (card->flags & UM_FLAG_NO_BATT)
+		dev_printk(KERN_INFO, &card->dev->dev,
+			"Size %d KB\n", card->mm_size);
 	else {
-		printk(KERN_INFO "MM%d: Size %d KB, Battery 1 %s (%s), Battery 2 %s (%s)\n",
-		       card->card_number, card->mm_size,
+		dev_printk(KERN_INFO, &card->dev->dev,
+			"Size %d KB, Battery 1 %s (%s), Battery 2 %s (%s)\n",
+		       card->mm_size,
 		       (batt_status & BATTERY_1_DISABLED ? "Disabled" : "Enabled"),
 		       card->battery[0].good ? "OK" : "FAILURE",
 		       (batt_status & BATTERY_2_DISABLED ? "Disabled" : "Enabled"),
@@ -1005,19 +1029,16 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
 	data = ~data;
 	data += 1;
 
-	card->win_size = data;
-
-
-	if (request_irq(dev->irq, mm_interrupt, IRQF_SHARED, "pci-umem", card)) {
-		printk(KERN_ERR "MM%d: Unable to allocate IRQ\n", card->card_number);
+	if (request_irq(dev->irq, mm_interrupt, IRQF_SHARED, DRIVER_NAME, card)) {
+		dev_printk(KERN_ERR, &card->dev->dev,
+			"Unable to allocate IRQ\n");
 		ret = -ENODEV;
 
 		goto failed_req_irq;
 	}
 
-	card->irq = dev->irq;
-	printk(KERN_INFO "MM%d: Window size %d bytes, IRQ %d\n", card->card_number,
-	       card->win_size, card->irq);
+	dev_printk(KERN_INFO, &card->dev->dev,
+		"Window size %d bytes, IRQ %d\n", data, dev->irq);
 
         spin_lock_init(&card->lock);
 
@@ -1037,10 +1058,12 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
 	num_cards++;
 
 	if (!get_userbit(card, MEMORY_INITIALIZED)) {
-		printk(KERN_INFO "MM%d: memory NOT initialized. Consider over-writing whole device.\n", card->card_number);
+		dev_printk(KERN_INFO, &card->dev->dev,
+			"memory NOT initialized. Consider over-writing whole device.\n");
 		card->init_size = 0;
 	} else {
-		printk(KERN_INFO "MM%d: memory already initialized\n", card->card_number);
+		dev_printk(KERN_INFO, &card->dev->dev,
+			"memory already initialized\n");
 		card->init_size = card->mm_size;
 	}
 
@@ -1062,7 +1085,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
  failed_magic:
 	iounmap(card->csr_remap);
  failed_remap_csr:
-	release_mem_region(card->csr_base, card->csr_len);
+	pci_release_regions(dev);
  failed_req_csr:
 
 	return ret;
@@ -1077,9 +1100,8 @@ static void mm_pci_remove(struct pci_dev *dev)
 	struct cardinfo *card = pci_get_drvdata(dev);
 
 	tasklet_kill(&card->tasklet);
+	free_irq(dev->irq, card);
 	iounmap(card->csr_remap);
-	release_mem_region(card->csr_base, card->csr_len);
-	free_irq(card->irq, card);
 
 	if (card->mm_pages[0].desc)
 		pci_free_consistent(card->dev, PAGE_SIZE*2,
@@ -1090,6 +1112,9 @@ static void mm_pci_remove(struct pci_dev *dev)
 				    card->mm_pages[1].desc,
 				    card->mm_pages[1].page_dma);
 	blk_cleanup_queue(card->queue);
+
+	pci_release_regions(dev);
+	pci_disable_device(dev);
 }
 
 static const struct pci_device_id mm_pci_ids[] = {
@@ -1109,11 +1134,12 @@ static const struct pci_device_id mm_pci_ids[] = {
 MODULE_DEVICE_TABLE(pci, mm_pci_ids);
 
 static struct pci_driver mm_pci_driver = {
-	.name =		"umem",
-	.id_table =	mm_pci_ids,
-	.probe =	mm_pci_probe,
-	.remove =	mm_pci_remove,
+	.name		= DRIVER_NAME,
+	.id_table	= mm_pci_ids,
+	.probe		= mm_pci_probe,
+	.remove		= mm_pci_remove,
 };
+
 /*
 -----------------------------------------------------------------------------------
 --                               mm_init
@@ -1125,13 +1151,11 @@ static int __init mm_init(void)
 	int retval, i;
 	int err;
 
-	printk(KERN_INFO DRIVER_VERSION " : " DRIVER_DESC "\n");
-
 	retval = pci_register_driver(&mm_pci_driver);
 	if (retval)
 		return -ENOMEM;
 
-	err = major_nr = register_blkdev(0, "umem");
+	err = major_nr = register_blkdev(0, DRIVER_NAME);
 	if (err < 0) {
 		pci_unregister_driver(&mm_pci_driver);
 		return -EIO;
@@ -1157,13 +1181,13 @@ static int __init mm_init(void)
 	}
 
 	init_battery_timer();
-	printk("MM: desc_per_page = %ld\n", DESC_PER_PAGE);
+	printk(KERN_INFO "MM: desc_per_page = %ld\n", DESC_PER_PAGE);
 /* printk("mm_init: Done. 10-19-01 9:00\n"); */
 	return 0;
 
 out:
 	pci_unregister_driver(&mm_pci_driver);
-	unregister_blkdev(major_nr, "umem");
+	unregister_blkdev(major_nr, DRIVER_NAME);
 	while (i--)
 		put_disk(mm_gendisk[i]);
 	return -ENOMEM;
@@ -1186,7 +1210,7 @@ static void __exit mm_cleanup(void)
 
 	pci_unregister_driver(&mm_pci_driver);
 
-	unregister_blkdev(major_nr, "umem");
+	unregister_blkdev(major_nr, DRIVER_NAME);
 }
 
 module_init(mm_init);

include/linux/umem.h → drivers/block/umem.h

@@ -87,13 +87,13 @@
 #define  DMASCR_DMA_COMPLETE	0x40000
 #define  DMASCR_CHAIN_COMPLETE	0x80000
 
-/* 
-3.SOME PCs HAVE HOST BRIDGES WHICH APPARENTLY DO NOT CORRECTLY HANDLE 
-READ-LINE (0xE) OR READ-MULTIPLE (0xC) PCI COMMAND CODES DURING DMA 
-TRANSFERS. IN OTHER SYSTEMS THESE COMMAND CODES WILL CAUSE THE HOST BRIDGE 
-TO ALLOW LONGER BURSTS DURING DMA READ OPERATIONS. THE UPPER FOUR BITS 
-(31..28) OF THE DMA CSR HAVE BEEN MADE PROGRAMMABLE, SO THAT EITHER A 0x6, 
-AN 0xE OR A 0xC CAN BE WRITTEN TO THEM TO SET THE COMMAND CODE USED DURING 
+/*
+3.SOME PCs HAVE HOST BRIDGES WHICH APPARENTLY DO NOT CORRECTLY HANDLE
+READ-LINE (0xE) OR READ-MULTIPLE (0xC) PCI COMMAND CODES DURING DMA
+TRANSFERS. IN OTHER SYSTEMS THESE COMMAND CODES WILL CAUSE THE HOST BRIDGE
+TO ALLOW LONGER BURSTS DURING DMA READ OPERATIONS. THE UPPER FOUR BITS
+(31..28) OF THE DMA CSR HAVE BEEN MADE PROGRAMMABLE, SO THAT EITHER A 0x6,
+AN 0xE OR A 0xC CAN BE WRITTEN TO THEM TO SET THE COMMAND CODE USED DURING
 DMA READ OPERATIONS.
 */
 #define        DMASCR_READ   0x60000000
@@ -125,11 +125,6 @@ struct mm_dma_desc {
 	__le64	sem_control_bits;
 } __attribute__((aligned(8)));
 
-#define PCI_VENDOR_ID_MICRO_MEMORY		0x1332
-#define PCI_DEVICE_ID_MICRO_MEMORY_5415CN	0x5415
-#define PCI_DEVICE_ID_MICRO_MEMORY_5425CN	0x5425
-#define PCI_DEVICE_ID_MICRO_MEMORY_6155		0x6155
-
 /* bits for card->flags */
 #define UM_FLAG_DMA_IN_REGS		1
 #define UM_FLAG_NO_BYTE_STATUS		2

drivers/block/xen-blkfront.c

@@ -150,9 +150,8 @@ static int blkif_queue_request(struct request *req)
 	struct blkfront_info *info = req->rq_disk->private_data;
 	unsigned long buffer_mfn;
 	struct blkif_request *ring_req;
-	struct bio *bio;
+	struct req_iterator iter;
 	struct bio_vec *bvec;
-	int idx;
 	unsigned long id;
 	unsigned int fsect, lsect;
 	int ref;
@@ -186,34 +185,31 @@ static int blkif_queue_request(struct request *req)
 		ring_req->operation = BLKIF_OP_WRITE_BARRIER;
 
 	ring_req->nr_segments = 0;
-	rq_for_each_bio (bio, req) {
-		bio_for_each_segment (bvec, bio, idx) {
-			BUG_ON(ring_req->nr_segments
-			       == BLKIF_MAX_SEGMENTS_PER_REQUEST);
-			buffer_mfn = pfn_to_mfn(page_to_pfn(bvec->bv_page));
-			fsect = bvec->bv_offset >> 9;
-			lsect = fsect + (bvec->bv_len >> 9) - 1;
-			/* install a grant reference. */
-			ref = gnttab_claim_grant_reference(&gref_head);
-			BUG_ON(ref == -ENOSPC);
-
-			gnttab_grant_foreign_access_ref(
+	rq_for_each_segment(bvec, req, iter) {
+		BUG_ON(ring_req->nr_segments == BLKIF_MAX_SEGMENTS_PER_REQUEST);
+		buffer_mfn = pfn_to_mfn(page_to_pfn(bvec->bv_page));
+		fsect = bvec->bv_offset >> 9;
+		lsect = fsect + (bvec->bv_len >> 9) - 1;
+		/* install a grant reference. */
+		ref = gnttab_claim_grant_reference(&gref_head);
+		BUG_ON(ref == -ENOSPC);
+
+		gnttab_grant_foreign_access_ref(
 				ref,
 				info->xbdev->otherend_id,
 				buffer_mfn,
 				rq_data_dir(req) );
 
-			info->shadow[id].frame[ring_req->nr_segments] =
+		info->shadow[id].frame[ring_req->nr_segments] =
 				mfn_to_pfn(buffer_mfn);
 
-			ring_req->seg[ring_req->nr_segments] =
+		ring_req->seg[ring_req->nr_segments] =
 				(struct blkif_request_segment) {
 					.gref       = ref,
 					.first_sect = fsect,
 					.last_sect  = lsect };
 
-			ring_req->nr_segments++;
-		}
+		ring_req->nr_segments++;
 	}
 
 	info->ring.req_prod_pvt++;

drivers/block/xsysace.c

@@ -91,6 +91,10 @@
 #include <linux/blkdev.h>
 #include <linux/hdreg.h>
 #include <linux/platform_device.h>
+#if defined(CONFIG_OF)
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#endif
 
 MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
 MODULE_DESCRIPTION("Xilinx SystemACE device driver");
@@ -158,6 +162,9 @@ MODULE_LICENSE("GPL");
 #define ACE_FIFO_SIZE (32)
 #define ACE_BUF_PER_SECTOR (ACE_SECTOR_SIZE / ACE_FIFO_SIZE)
 
+#define ACE_BUS_WIDTH_8  0
+#define ACE_BUS_WIDTH_16 1
+
 struct ace_reg_ops;
 
 struct ace_device {
@@ -188,7 +195,7 @@ struct ace_device {
 
 	/* Details of hardware device */
 	unsigned long physaddr;
-	void *baseaddr;
+	void __iomem *baseaddr;
 	int irq;
 	int bus_width;		/* 0 := 8 bit; 1 := 16 bit */
 	struct ace_reg_ops *reg_ops;
@@ -220,20 +227,20 @@ struct ace_reg_ops {
 /* 8 Bit bus width */
 static u16 ace_in_8(struct ace_device *ace, int reg)
 {
-	void *r = ace->baseaddr + reg;
+	void __iomem *r = ace->baseaddr + reg;
 	return in_8(r) | (in_8(r + 1) << 8);
 }
 
 static void ace_out_8(struct ace_device *ace, int reg, u16 val)
 {
-	void *r = ace->baseaddr + reg;
+	void __iomem *r = ace->baseaddr + reg;
 	out_8(r, val);
 	out_8(r + 1, val >> 8);
 }
 
 static void ace_datain_8(struct ace_device *ace)
 {
-	void *r = ace->baseaddr + 0x40;
+	void __iomem *r = ace->baseaddr + 0x40;
 	u8 *dst = ace->data_ptr;
 	int i = ACE_FIFO_SIZE;
 	while (i--)
@@ -243,7 +250,7 @@ static void ace_datain_8(struct ace_device *ace)
 
 static void ace_dataout_8(struct ace_device *ace)
 {
-	void *r = ace->baseaddr + 0x40;
+	void __iomem *r = ace->baseaddr + 0x40;
 	u8 *src = ace->data_ptr;
 	int i = ACE_FIFO_SIZE;
 	while (i--)
@@ -931,9 +938,11 @@ static int __devinit ace_setup(struct ace_device *ace)
 {
 	u16 version;
 	u16 val;
-
 	int rc;
 
+	dev_dbg(ace->dev, "ace_setup(ace=0x%p)\n", ace);
+	dev_dbg(ace->dev, "physaddr=0x%lx irq=%i\n", ace->physaddr, ace->irq);
+
 	spin_lock_init(&ace->lock);
 	init_completion(&ace->id_completion);
 
@@ -944,15 +953,6 @@ static int __devinit ace_setup(struct ace_device *ace)
 	if (!ace->baseaddr)
 		goto err_ioremap;
 
-	if (ace->irq != NO_IRQ) {
-		rc = request_irq(ace->irq, ace_interrupt, 0, "systemace", ace);
-		if (rc) {
-			/* Failure - fall back to polled mode */
-			dev_err(ace->dev, "request_irq failed\n");
-			ace->irq = NO_IRQ;
-		}
-	}
-
 	/*
 	 * Initialize the state machine tasklet and stall timer
 	 */
@@ -982,7 +982,7 @@ static int __devinit ace_setup(struct ace_device *ace)
 	snprintf(ace->gd->disk_name, 32, "xs%c", ace->id + 'a');
 
 	/* set bus width */
-	if (ace->bus_width == 1) {
+	if (ace->bus_width == ACE_BUS_WIDTH_16) {
 		/* 0x0101 should work regardless of endianess */
 		ace_out_le16(ace, ACE_BUSMODE, 0x0101);
 
@@ -1005,6 +1005,16 @@ static int __devinit ace_setup(struct ace_device *ace)
 	ace_out(ace, ACE_CTRL, ACE_CTRL_FORCECFGMODE |
 		ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ);
 
+	/* Now we can hook up the irq handler */
+	if (ace->irq != NO_IRQ) {
+		rc = request_irq(ace->irq, ace_interrupt, 0, "systemace", ace);
+		if (rc) {
+			/* Failure - fall back to polled mode */
+			dev_err(ace->dev, "request_irq failed\n");
+			ace->irq = NO_IRQ;
+		}
+	}
+
 	/* Enable interrupts */
 	val = ace_in(ace, ACE_CTRL);
 	val |= ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ;
@@ -1024,16 +1034,14 @@ static int __devinit ace_setup(struct ace_device *ace)
 
 	return 0;
 
-      err_read:
+err_read:
 	put_disk(ace->gd);
-      err_alloc_disk:
+err_alloc_disk:
 	blk_cleanup_queue(ace->queue);
-      err_blk_initq:
+err_blk_initq:
 	iounmap(ace->baseaddr);
-	if (ace->irq != NO_IRQ)
-		free_irq(ace->irq, ace);
-      err_ioremap:
-	printk(KERN_INFO "xsysace: error initializing device at 0x%lx\n",
+err_ioremap:
+	dev_info(ace->dev, "xsysace: error initializing device at 0x%lx\n",
 	       ace->physaddr);
 	return -ENOMEM;
 }
@@ -1056,98 +1064,222 @@ static void __devexit ace_teardown(struct ace_device *ace)
 	iounmap(ace->baseaddr);
 }
 
-/* ---------------------------------------------------------------------
- * Platform Bus Support
- */
-
-static int __devinit ace_probe(struct device *device)
+static int __devinit
+ace_alloc(struct device *dev, int id, unsigned long physaddr,
+	  int irq, int bus_width)
 {
-	struct platform_device *dev = to_platform_device(device);
 	struct ace_device *ace;
-	int i;
+	int rc;
+	dev_dbg(dev, "ace_alloc(%p)\n", dev);
 
-	dev_dbg(device, "ace_probe(%p)\n", device);
+	if (!physaddr) {
+		rc = -ENODEV;
+		goto err_noreg;
+	}
 
-	/*
-	 * Allocate the ace device structure
-	 */
+	/* Allocate and initialize the ace device structure */
 	ace = kzalloc(sizeof(struct ace_device), GFP_KERNEL);
-	if (!ace)
+	if (!ace) {
+		rc = -ENOMEM;
 		goto err_alloc;
-
-	ace->dev = device;
-	ace->id = dev->id;
-	ace->irq = NO_IRQ;
-
-	for (i = 0; i < dev->num_resources; i++) {
-		if (dev->resource[i].flags & IORESOURCE_MEM)
-			ace->physaddr = dev->resource[i].start;
-		if (dev->resource[i].flags & IORESOURCE_IRQ)
-			ace->irq = dev->resource[i].start;
 	}
 
-	/* FIXME: Should get bus_width from the platform_device struct */
-	ace->bus_width = 1;
-
-	dev_set_drvdata(&dev->dev, ace);
+	ace->dev = dev;
+	ace->id = id;
+	ace->physaddr = physaddr;
+	ace->irq = irq;
+	ace->bus_width = bus_width;
 
-	/* Call the bus-independant setup code */
-	if (ace_setup(ace) != 0)
+	/* Call the setup code */
+	rc = ace_setup(ace);
+	if (rc)
 		goto err_setup;
 
+	dev_set_drvdata(dev, ace);
 	return 0;
 
-      err_setup:
-	dev_set_drvdata(&dev->dev, NULL);
+err_setup:
+	dev_set_drvdata(dev, NULL);
 	kfree(ace);
-      err_alloc:
-	printk(KERN_ERR "xsysace: could not initialize device\n");
-	return -ENOMEM;
+err_alloc:
+err_noreg:
+	dev_err(dev, "could not initialize device, err=%i\n", rc);
+	return rc;
 }
 
-/*
- * Platform bus remove() method
- */
-static int __devexit ace_remove(struct device *device)
+static void __devexit ace_free(struct device *dev)
 {
-	struct ace_device *ace = dev_get_drvdata(device);
-
-	dev_dbg(device, "ace_remove(%p)\n", device);
+	struct ace_device *ace = dev_get_drvdata(dev);
+	dev_dbg(dev, "ace_free(%p)\n", dev);
 
 	if (ace) {
 		ace_teardown(ace);
+		dev_set_drvdata(dev, NULL);
 		kfree(ace);
 	}
+}
+
+/* ---------------------------------------------------------------------
+ * Platform Bus Support
+ */
+
+static int __devinit ace_probe(struct platform_device *dev)
+{
+	unsigned long physaddr = 0;
+	int bus_width = ACE_BUS_WIDTH_16; /* FIXME: should not be hard coded */
+	int id = dev->id;
+	int irq = NO_IRQ;
+	int i;
 
+	dev_dbg(&dev->dev, "ace_probe(%p)\n", dev);
+
+	for (i = 0; i < dev->num_resources; i++) {
+		if (dev->resource[i].flags & IORESOURCE_MEM)
+			physaddr = dev->resource[i].start;
+		if (dev->resource[i].flags & IORESOURCE_IRQ)
+			irq = dev->resource[i].start;
+	}
+
+	/* Call the bus-independant setup code */
+	return ace_alloc(&dev->dev, id, physaddr, irq, bus_width);
+}
+
+/*
+ * Platform bus remove() method
+ */
+static int __devexit ace_remove(struct platform_device *dev)
+{
+	ace_free(&dev->dev);
 	return 0;
 }
 
-static struct device_driver ace_driver = {
-	.name = "xsysace",
-	.bus = &platform_bus_type,
+static struct platform_driver ace_platform_driver = {
 	.probe = ace_probe,
 	.remove = __devexit_p(ace_remove),
+	.driver = {
+		.owner = THIS_MODULE,
+		.name = "xsysace",
+	},
+};
+
+/* ---------------------------------------------------------------------
+ * OF_Platform Bus Support
+ */
+
+#if defined(CONFIG_OF)
+static int __devinit
+ace_of_probe(struct of_device *op, const struct of_device_id *match)
+{
+	struct resource res;
+	unsigned long physaddr;
+	const u32 *id;
+	int irq, bus_width, rc;
+
+	dev_dbg(&op->dev, "ace_of_probe(%p, %p)\n", op, match);
+
+	/* device id */
+	id = of_get_property(op->node, "port-number", NULL);
+
+	/* physaddr */
+	rc = of_address_to_resource(op->node, 0, &res);
+	if (rc) {
+		dev_err(&op->dev, "invalid address\n");
+		return rc;
+	}
+	physaddr = res.start;
+
+	/* irq */
+	irq = irq_of_parse_and_map(op->node, 0);
+
+	/* bus width */
+	bus_width = ACE_BUS_WIDTH_16;
+	if (of_find_property(op->node, "8-bit", NULL))
+		bus_width = ACE_BUS_WIDTH_8;
+
+	/* Call the bus-independant setup code */
+	return ace_alloc(&op->dev, id ? *id : 0, physaddr, irq, bus_width);
+}
+
+static int __devexit ace_of_remove(struct of_device *op)
+{
+	ace_free(&op->dev);
+	return 0;
+}
+
+/* Match table for of_platform binding */
+static struct of_device_id __devinit ace_of_match[] = {
+	{ .compatible = "xilinx,xsysace", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, ace_of_match);
+
+static struct of_platform_driver ace_of_driver = {
+	.owner = THIS_MODULE,
+	.name = "xsysace",
+	.match_table = ace_of_match,
+	.probe = ace_of_probe,
+	.remove = __devexit_p(ace_of_remove),
+	.driver = {
+		.name = "xsysace",
+	},
 };
 
+/* Registration helpers to keep the number of #ifdefs to a minimum */
+static inline int __init ace_of_register(void)
+{
+	pr_debug("xsysace: registering OF binding\n");
+	return of_register_platform_driver(&ace_of_driver);
+}
+
+static inline void __exit ace_of_unregister(void)
+{
+	of_unregister_platform_driver(&ace_of_driver);
+}
+#else /* CONFIG_OF */
+/* CONFIG_OF not enabled; do nothing helpers */
+static inline int __init ace_of_register(void) { return 0; }
+static inline void __exit ace_of_unregister(void) { }
+#endif /* CONFIG_OF */
+
 /* ---------------------------------------------------------------------
  * Module init/exit routines
  */
 static int __init ace_init(void)
 {
+	int rc;
+
 	ace_major = register_blkdev(ace_major, "xsysace");
 	if (ace_major <= 0) {
-		printk(KERN_WARNING "xsysace: register_blkdev() failed\n");
-		return ace_major;
+		rc = -ENOMEM;
+		goto err_blk;
 	}
 
-	pr_debug("Registering Xilinx SystemACE driver, major=%i\n", ace_major);
-	return driver_register(&ace_driver);
+	rc = ace_of_register();
+	if (rc)
+		goto err_of;
+
+	pr_debug("xsysace: registering platform binding\n");
+	rc = platform_driver_register(&ace_platform_driver);
+	if (rc)
+		goto err_plat;
+
+	pr_info("Xilinx SystemACE device driver, major=%i\n", ace_major);
+	return 0;
+
+err_plat:
+	ace_of_unregister();
+err_of:
+	unregister_blkdev(ace_major, "xsysace");
+err_blk:
+	printk(KERN_ERR "xsysace: registration failed; err=%i\n", rc);
+	return rc;
 }
 
 static void __exit ace_exit(void)
 {
 	pr_debug("Unregistering Xilinx SystemACE driver\n");
-	driver_unregister(&ace_driver);
+	platform_driver_unregister(&ace_platform_driver);
+	ace_of_unregister();
 	unregister_blkdev(ace_major, "xsysace");
 }
 

drivers/ide/ide-floppy.c

@@ -606,26 +606,24 @@ static void idefloppy_input_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, uns
 {
 	struct request *rq = pc->rq;
 	struct bio_vec *bvec;
-	struct bio *bio;
+	struct req_iterator iter;
 	unsigned long flags;
 	char *data;
-	int count, i, done = 0;
+	int count, done = 0;
 
-	rq_for_each_bio(bio, rq) {
-		bio_for_each_segment(bvec, bio, i) {
-			if (!bcount)
-				break;
+	rq_for_each_segment(bvec, rq, iter) {
+		if (!bcount)
+			break;
 
-			count = min(bvec->bv_len, bcount);
+		count = min(bvec->bv_len, bcount);
 
-			data = bvec_kmap_irq(bvec, &flags);
-			drive->hwif->atapi_input_bytes(drive, data, count);
-			bvec_kunmap_irq(data, &flags);
+		data = bvec_kmap_irq(bvec, &flags);
+		drive->hwif->atapi_input_bytes(drive, data, count);
+		bvec_kunmap_irq(data, &flags);
 
-			bcount -= count;
-			pc->b_count += count;
-			done += count;
-		}
+		bcount -= count;
+		pc->b_count += count;
+		done += count;
 	}
 
 	idefloppy_do_end_request(drive, 1, done >> 9);
@@ -639,27 +637,25 @@ static void idefloppy_input_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, uns
 static void idefloppy_output_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount)
 {
 	struct request *rq = pc->rq;
-	struct bio *bio;
+	struct req_iterator iter;
 	struct bio_vec *bvec;
 	unsigned long flags;
-	int count, i, done = 0;
+	int count, done = 0;
 	char *data;
 
-	rq_for_each_bio(bio, rq) {
-		bio_for_each_segment(bvec, bio, i) {
-			if (!bcount)
-				break;
+	rq_for_each_segment(bvec, rq, iter) {
+		if (!bcount)
+			break;
 
-			count = min(bvec->bv_len, bcount);
+		count = min(bvec->bv_len, bcount);
 
-			data = bvec_kmap_irq(bvec, &flags);
-			drive->hwif->atapi_output_bytes(drive, data, count);
-			bvec_kunmap_irq(data, &flags);
+		data = bvec_kmap_irq(bvec, &flags);
+		drive->hwif->atapi_output_bytes(drive, data, count);
+		bvec_kunmap_irq(data, &flags);
 
-			bcount -= count;
-			pc->b_count += count;
-			done += count;
-		}
+		bcount -= count;
+		pc->b_count += count;
+		done += count;
 	}
 
 	idefloppy_do_end_request(drive, 1, done >> 9);

drivers/md/dm-crypt.c

@@ -489,7 +489,7 @@ static void dec_pending(struct dm_crypt_io *io, int error)
 	if (!atomic_dec_and_test(&io->pending))
 		return;
 
-	bio_endio(io->base_bio, io->base_bio->bi_size, io->error);
+	bio_endio(io->base_bio, io->error);
 
 	mempool_free(io, cc->io_pool);
 }
@@ -509,25 +509,19 @@ static void kcryptd_queue_io(struct dm_crypt_io *io)
 	queue_work(_kcryptd_workqueue, &io->work);
 }
 
-static int crypt_endio(struct bio *clone, unsigned int done, int error)
+static void crypt_endio(struct bio *clone, int error)
 {
 	struct dm_crypt_io *io = clone->bi_private;
 	struct crypt_config *cc = io->target->private;
 	unsigned read_io = bio_data_dir(clone) == READ;
 
 	/*
-	 * free the processed pages, even if
-	 * it's only a partially completed write
+	 * free the processed pages
 	 */
-	if (!read_io)
-		crypt_free_buffer_pages(cc, clone, done);
-
-	/* keep going - not finished yet */
-	if (unlikely(clone->bi_size))
-		return 1;
-
-	if (!read_io)
+	if (!read_io) {
+		crypt_free_buffer_pages(cc, clone, clone->bi_size);
 		goto out;
+	}
 
 	if (unlikely(!bio_flagged(clone, BIO_UPTODATE))) {
 		error = -EIO;
@@ -537,12 +531,11 @@ static int crypt_endio(struct bio *clone, unsigned int done, int error)
 	bio_put(clone);
 	io->post_process = 1;
 	kcryptd_queue_io(io);
-	return 0;
+	return;
 
 out:
 	bio_put(clone);
 	dec_pending(io, error);
-	return error;
 }
 
 static void clone_init(struct dm_crypt_io *io, struct bio *clone)

drivers/md/dm-emc.c

@@ -38,13 +38,10 @@ static inline void free_bio(struct bio *bio)
 	bio_put(bio);
 }
 
-static int emc_endio(struct bio *bio, unsigned int bytes_done, int error)
+static void emc_endio(struct bio *bio, int error)
 {
 	struct dm_path *path = bio->bi_private;
 
-	if (bio->bi_size)
-		return 1;
-
 	/* We also need to look at the sense keys here whether or not to
 	 * switch to the next PG etc.
 	 *
@@ -109,15 +106,7 @@ static struct request *get_failover_req(struct emc_handler *h,
 		return NULL;
 	}
 
-	rq->bio = rq->biotail = bio;
-	blk_rq_bio_prep(q, rq, bio);
-
-	rq->rq_disk = bdev->bd_contains->bd_disk;
-
-	/* bio backed don't set data */
-	rq->buffer = rq->data = NULL;
-	/* rq data_len used for pc cmd's request_bufflen */
-	rq->data_len = bio->bi_size;
+	blk_rq_append_bio(q, rq, bio);
 
 	rq->sense = h->sense;
 	memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE);

drivers/md/dm-io.c

@@ -124,15 +124,11 @@ static void dec_count(struct io *io, unsigned int region, int error)
 	}
 }
 
-static int endio(struct bio *bio, unsigned int done, int error)
+static void endio(struct bio *bio, int error)
 {
 	struct io *io;
 	unsigned region;
 
-	/* keep going until we've finished */
-	if (bio->bi_size)
-		return 1;
-
 	if (error && bio_data_dir(bio) == READ)
 		zero_fill_bio(bio);
 
@@ -146,8 +142,6 @@ static int endio(struct bio *bio, unsigned int done, int error)
 	bio_put(bio);
 
 	dec_count(io, region, error);
-
-	return 0;
 }
 
 /*-----------------------------------------------------------------

drivers/md/dm-mpath.c

@@ -390,11 +390,11 @@ static void dispatch_queued_ios(struct multipath *m)
 
 		r = map_io(m, bio, mpio, 1);
 		if (r < 0)
-			bio_endio(bio, bio->bi_size, r);
+			bio_endio(bio, r);
 		else if (r == DM_MAPIO_REMAPPED)
 			generic_make_request(bio);
 		else if (r == DM_MAPIO_REQUEUE)
-			bio_endio(bio, bio->bi_size, -EIO);
+			bio_endio(bio, -EIO);
 
 		bio = next;
 	}

drivers/md/dm-raid1.c

@@ -820,7 +820,7 @@ static void write_callback(unsigned long error, void *context)
 				break;
 			}
 	}
-	bio_endio(bio, bio->bi_size, 0);
+	bio_endio(bio, 0);
 }
 
 static void do_write(struct mirror_set *ms, struct bio *bio)
@@ -900,7 +900,7 @@ static void do_writes(struct mirror_set *ms, struct bio_list *writes)
 	 */
 	if (unlikely(ms->log_failure))
 		while ((bio = bio_list_pop(&sync)))
-			bio_endio(bio, bio->bi_size, -EIO);
+			bio_endio(bio, -EIO);
 	else while ((bio = bio_list_pop(&sync)))
 		do_write(ms, bio);
 

drivers/md/dm-snap.c

@@ -636,7 +636,7 @@ static void error_bios(struct bio *bio)
 	while (bio) {
 		n = bio->bi_next;
 		bio->bi_next = NULL;
-		bio_io_error(bio, bio->bi_size);
+		bio_io_error(bio);
 		bio = n;
 	}
 }

drivers/md/dm-zero.c

@@ -43,7 +43,7 @@ static int zero_map(struct dm_target *ti, struct bio *bio,
 		break;
 	}
 
-	bio_endio(bio, bio->bi_size, 0);
+	bio_endio(bio, 0);
 
 	/* accepted bio, don't make new request */
 	return DM_MAPIO_SUBMITTED;

drivers/md/dm.c

@@ -484,23 +484,20 @@ static void dec_pending(struct dm_io *io, int error)
 			blk_add_trace_bio(io->md->queue, io->bio,
 					  BLK_TA_COMPLETE);
 
-			bio_endio(io->bio, io->bio->bi_size, io->error);
+			bio_endio(io->bio, io->error);
 		}
 
 		free_io(io->md, io);
 	}
 }
 
-static int clone_endio(struct bio *bio, unsigned int done, int error)
+static void clone_endio(struct bio *bio, int error)
 {
 	int r = 0;
 	struct dm_target_io *tio = bio->bi_private;
 	struct mapped_device *md = tio->io->md;
 	dm_endio_fn endio = tio->ti->type->end_io;
 
-	if (bio->bi_size)
-		return 1;
-
 	if (!bio_flagged(bio, BIO_UPTODATE) && !error)
 		error = -EIO;
 
@@ -514,7 +511,7 @@ static int clone_endio(struct bio *bio, unsigned int done, int error)
 			error = r;
 		else if (r == DM_ENDIO_INCOMPLETE)
 			/* The target will handle the io */
-			return 1;
+			return;
 		else if (r) {
 			DMWARN("unimplemented target endio return value: %d", r);
 			BUG();
@@ -530,7 +527,6 @@ static int clone_endio(struct bio *bio, unsigned int done, int error)
 
 	bio_put(bio);
 	free_tio(md, tio);
-	return r;
 }
 
 static sector_t max_io_len(struct mapped_device *md,
@@ -761,7 +757,7 @@ static void __split_bio(struct mapped_device *md, struct bio *bio)
 
 	ci.map = dm_get_table(md);
 	if (!ci.map) {
-		bio_io_error(bio, bio->bi_size);
+		bio_io_error(bio);
 		return;
 	}
 
@@ -803,7 +799,7 @@ static int dm_request(struct request_queue *q, struct bio *bio)
 	 * guarantee it is (or can be) handled by the targets correctly.
 	 */
 	if (unlikely(bio_barrier(bio))) {
-		bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
+		bio_endio(bio, -EOPNOTSUPP);
 		return 0;
 	}
 
@@ -820,13 +816,13 @@ static int dm_request(struct request_queue *q, struct bio *bio)
 		up_read(&md->io_lock);
 
 		if (bio_rw(bio) == READA) {
-			bio_io_error(bio, bio->bi_size);
+			bio_io_error(bio);
 			return 0;
 		}
 
 		r = queue_io(md, bio);
 		if (r < 0) {
-			bio_io_error(bio, bio->bi_size);
+			bio_io_error(bio);
 			return 0;
 
 		} else if (r == 0)

drivers/md/faulty.c

@@ -65,18 +65,16 @@
 #include <linux/raid/md.h>
 
 
-static int faulty_fail(struct bio *bio, unsigned int bytes_done, int error)
+static void faulty_fail(struct bio *bio, int error)
 {
 	struct bio *b = bio->bi_private;
 
 	b->bi_size = bio->bi_size;
 	b->bi_sector = bio->bi_sector;
 
-	if (bio->bi_size == 0)
-		bio_put(bio);
+	bio_put(bio);
 
-	clear_bit(BIO_UPTODATE, &b->bi_flags);
-	return (b->bi_end_io)(b, bytes_done, -EIO);
+	bio_io_error(b);
 }
 
 typedef struct faulty_conf {
@@ -179,7 +177,7 @@ static int make_request(struct request_queue *q, struct bio *bio)
 			/* special case - don't decrement, don't generic_make_request,
 			 * just fail immediately
 			 */
-			bio_endio(bio, bio->bi_size, -EIO);
+			bio_endio(bio, -EIO);
 			return 0;
 		}
 

drivers/md/linear.c

@@ -338,7 +338,7 @@ static int linear_make_request (struct request_queue *q, struct bio *bio)
 	sector_t block;
 
 	if (unlikely(bio_barrier(bio))) {
-		bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
+		bio_endio(bio, -EOPNOTSUPP);
 		return 0;
 	}
 
@@ -358,7 +358,7 @@ static int linear_make_request (struct request_queue *q, struct bio *bio)
 			bdevname(tmp_dev->rdev->bdev, b),
 			(unsigned long long)tmp_dev->size,
 		        (unsigned long long)tmp_dev->offset);
-		bio_io_error(bio, bio->bi_size);
+		bio_io_error(bio);
 		return 0;
 	}
 	if (unlikely(bio->bi_sector + (bio->bi_size >> 9) >

drivers/md/md.c

@@ -213,7 +213,7 @@ static DEFINE_SPINLOCK(all_mddevs_lock);
 
 static int md_fail_request (struct request_queue *q, struct bio *bio)
 {
-	bio_io_error(bio, bio->bi_size);
+	bio_io_error(bio);
 	return 0;
 }
 
@@ -384,12 +384,10 @@ static void free_disk_sb(mdk_rdev_t * rdev)
 }
 
 
-static int super_written(struct bio *bio, unsigned int bytes_done, int error)
+static void super_written(struct bio *bio, int error)
 {
 	mdk_rdev_t *rdev = bio->bi_private;
 	mddev_t *mddev = rdev->mddev;
-	if (bio->bi_size)
-		return 1;
 
 	if (error || !test_bit(BIO_UPTODATE, &bio->bi_flags)) {
 		printk("md: super_written gets error=%d, uptodate=%d\n",
@@ -401,16 +399,13 @@ static int super_written(struct bio *bio, unsigned int bytes_done, int error)
 	if (atomic_dec_and_test(&mddev->pending_writes))
 		wake_up(&mddev->sb_wait);
 	bio_put(bio);
-	return 0;
 }
 
-static int super_written_barrier(struct bio *bio, unsigned int bytes_done, int error)
+static void super_written_barrier(struct bio *bio, int error)
 {
 	struct bio *bio2 = bio->bi_private;
 	mdk_rdev_t *rdev = bio2->bi_private;
 	mddev_t *mddev = rdev->mddev;
-	if (bio->bi_size)
-		return 1;
 
 	if (!test_bit(BIO_UPTODATE, &bio->bi_flags) &&
 	    error == -EOPNOTSUPP) {
@@ -424,11 +419,11 @@ static int super_written_barrier(struct bio *bio, unsigned int bytes_done, int e
 		spin_unlock_irqrestore(&mddev->write_lock, flags);
 		wake_up(&mddev->sb_wait);
 		bio_put(bio);
-		return 0;
+	} else {
+		bio_put(bio2);
+		bio->bi_private = rdev;
+		super_written(bio, error);
 	}
-	bio_put(bio2);
-	bio->bi_private = rdev;
-	return super_written(bio, bytes_done, error);
 }
 
 void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev,
@@ -489,13 +484,9 @@ void md_super_wait(mddev_t *mddev)
 	finish_wait(&mddev->sb_wait, &wq);
 }
 
-static int bi_complete(struct bio *bio, unsigned int bytes_done, int error)
+static void bi_complete(struct bio *bio, int error)
 {
-	if (bio->bi_size)
-		return 1;
-
 	complete((struct completion*)bio->bi_private);
-	return 0;
 }
 
 int sync_page_io(struct block_device *bdev, sector_t sector, int size,

drivers/md/multipath.c

@@ -82,21 +82,17 @@ static void multipath_end_bh_io (struct multipath_bh *mp_bh, int err)
 	struct bio *bio = mp_bh->master_bio;
 	multipath_conf_t *conf = mddev_to_conf(mp_bh->mddev);
 
-	bio_endio(bio, bio->bi_size, err);
+	bio_endio(bio, err);
 	mempool_free(mp_bh, conf->pool);
 }
 
-static int multipath_end_request(struct bio *bio, unsigned int bytes_done,
-				 int error)
+static void multipath_end_request(struct bio *bio, int error)
 {
 	int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
 	struct multipath_bh * mp_bh = (struct multipath_bh *)(bio->bi_private);
 	multipath_conf_t *conf = mddev_to_conf(mp_bh->mddev);
 	mdk_rdev_t *rdev = conf->multipaths[mp_bh->path].rdev;
 
-	if (bio->bi_size)
-		return 1;
-
 	if (uptodate)
 		multipath_end_bh_io(mp_bh, 0);
 	else if (!bio_rw_ahead(bio)) {
@@ -112,7 +108,6 @@ static int multipath_end_request(struct bio *bio, unsigned int bytes_done,
 	} else
 		multipath_end_bh_io(mp_bh, error);
 	rdev_dec_pending(rdev, conf->mddev);
-	return 0;
 }
 
 static void unplug_slaves(mddev_t *mddev)
@@ -155,7 +150,7 @@ static int multipath_make_request (struct request_queue *q, struct bio * bio)
 	const int rw = bio_data_dir(bio);
 
 	if (unlikely(bio_barrier(bio))) {
-		bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
+		bio_endio(bio, -EOPNOTSUPP);
 		return 0;
 	}
 
@@ -169,7 +164,7 @@ static int multipath_make_request (struct request_queue *q, struct bio * bio)
 
 	mp_bh->path = multipath_map(conf);
 	if (mp_bh->path < 0) {
-		bio_endio(bio, bio->bi_size, -EIO);
+		bio_endio(bio, -EIO);
 		mempool_free(mp_bh, conf->pool);
 		return 0;
 	}

drivers/md/raid0.c

@@ -420,7 +420,7 @@ static int raid0_make_request (struct request_queue *q, struct bio *bio)
 	const int rw = bio_data_dir(bio);
 
 	if (unlikely(bio_barrier(bio))) {
-		bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
+		bio_endio(bio, -EOPNOTSUPP);
 		return 0;
 	}
 
@@ -490,7 +490,7 @@ bad_map:
 		" or bigger than %dk %llu %d\n", chunk_size, 
 		(unsigned long long)bio->bi_sector, bio->bi_size >> 10);
 
-	bio_io_error(bio, bio->bi_size);
+	bio_io_error(bio);
 	return 0;
 }
 			   

drivers/md/raid1.c

@@ -238,7 +238,7 @@ static void raid_end_bio_io(r1bio_t *r1_bio)
 			(unsigned long long) bio->bi_sector +
 				(bio->bi_size >> 9) - 1);
 
-		bio_endio(bio, bio->bi_size,
+		bio_endio(bio,
 			test_bit(R1BIO_Uptodate, &r1_bio->state) ? 0 : -EIO);
 	}
 	free_r1bio(r1_bio);
@@ -255,16 +255,13 @@ static inline void update_head_pos(int disk, r1bio_t *r1_bio)
 		r1_bio->sector + (r1_bio->sectors);
 }
 
-static int raid1_end_read_request(struct bio *bio, unsigned int bytes_done, int error)
+static void raid1_end_read_request(struct bio *bio, int error)
 {
 	int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
 	r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private);
 	int mirror;
 	conf_t *conf = mddev_to_conf(r1_bio->mddev);
 
-	if (bio->bi_size)
-		return 1;
-	
 	mirror = r1_bio->read_disk;
 	/*
 	 * this branch is our 'one mirror IO has finished' event handler:
@@ -301,10 +298,9 @@ static int raid1_end_read_request(struct bio *bio, unsigned int bytes_done, int
 	}
 
 	rdev_dec_pending(conf->mirrors[mirror].rdev, conf->mddev);
-	return 0;
 }
 
-static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int error)
+static void raid1_end_write_request(struct bio *bio, int error)
 {
 	int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
 	r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private);
@@ -312,8 +308,6 @@ static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int
 	conf_t *conf = mddev_to_conf(r1_bio->mddev);
 	struct bio *to_put = NULL;
 
-	if (bio->bi_size)
-		return 1;
 
 	for (mirror = 0; mirror < conf->raid_disks; mirror++)
 		if (r1_bio->bios[mirror] == bio)
@@ -366,7 +360,7 @@ static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int
 					       (unsigned long long) mbio->bi_sector,
 					       (unsigned long long) mbio->bi_sector +
 					       (mbio->bi_size >> 9) - 1);
-					bio_endio(mbio, mbio->bi_size, 0);
+					bio_endio(mbio, 0);
 				}
 			}
 		}
@@ -400,8 +394,6 @@ static int raid1_end_write_request(struct bio *bio, unsigned int bytes_done, int
 
 	if (to_put)
 		bio_put(to_put);
-
-	return 0;
 }
 
 
@@ -796,7 +788,7 @@ static int make_request(struct request_queue *q, struct bio * bio)
 	if (unlikely(!mddev->barriers_work && bio_barrier(bio))) {
 		if (rw == WRITE)
 			md_write_end(mddev);
-		bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
+		bio_endio(bio, -EOPNOTSUPP);
 		return 0;
 	}
 
@@ -1137,14 +1129,11 @@ abort:
 }
 
 
-static int end_sync_read(struct bio *bio, unsigned int bytes_done, int error)
+static void end_sync_read(struct bio *bio, int error)
 {
 	r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private);
 	int i;
 
-	if (bio->bi_size)
-		return 1;
-
 	for (i=r1_bio->mddev->raid_disks; i--; )
 		if (r1_bio->bios[i] == bio)
 			break;
@@ -1160,10 +1149,9 @@ static int end_sync_read(struct bio *bio, unsigned int bytes_done, int error)
 
 	if (atomic_dec_and_test(&r1_bio->remaining))
 		reschedule_retry(r1_bio);
-	return 0;
 }
 
-static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error)
+static void end_sync_write(struct bio *bio, int error)
 {
 	int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
 	r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private);
@@ -1172,9 +1160,6 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error)
 	int i;
 	int mirror=0;
 
-	if (bio->bi_size)
-		return 1;
-
 	for (i = 0; i < conf->raid_disks; i++)
 		if (r1_bio->bios[i] == bio) {
 			mirror = i;
@@ -1200,7 +1185,6 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error)
 		md_done_sync(mddev, r1_bio->sectors, uptodate);
 		put_buf(r1_bio);
 	}
-	return 0;
 }
 
 static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio)

drivers/md/raid10.c

@@ -227,7 +227,7 @@ static void raid_end_bio_io(r10bio_t *r10_bio)
 {
 	struct bio *bio = r10_bio->master_bio;
 
-	bio_endio(bio, bio->bi_size,
+	bio_endio(bio,
 		test_bit(R10BIO_Uptodate, &r10_bio->state) ? 0 : -EIO);
 	free_r10bio(r10_bio);
 }
@@ -243,15 +243,13 @@ static inline void update_head_pos(int slot, r10bio_t *r10_bio)
 		r10_bio->devs[slot].addr + (r10_bio->sectors);
 }
 
-static int raid10_end_read_request(struct bio *bio, unsigned int bytes_done, int error)
+static void raid10_end_read_request(struct bio *bio, int error)
 {
 	int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
 	r10bio_t * r10_bio = (r10bio_t *)(bio->bi_private);
 	int slot, dev;
 	conf_t *conf = mddev_to_conf(r10_bio->mddev);
 
-	if (bio->bi_size)
-		return 1;
 
 	slot = r10_bio->read_slot;
 	dev = r10_bio->devs[slot].devnum;
@@ -284,19 +282,15 @@ static int raid10_end_read_request(struct bio *bio, unsigned int bytes_done, int
 	}
 
 	rdev_dec_pending(conf->mirrors[dev].rdev, conf->mddev);
-	return 0;
 }
 
-static int raid10_end_write_request(struct bio *bio, unsigned int bytes_done, int error)
+static void raid10_end_write_request(struct bio *bio, int error)
 {
 	int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
 	r10bio_t * r10_bio = (r10bio_t *)(bio->bi_private);
 	int slot, dev;
 	conf_t *conf = mddev_to_conf(r10_bio->mddev);
 
-	if (bio->bi_size)
-		return 1;
-
 	for (slot = 0; slot < conf->copies; slot++)
 		if (r10_bio->devs[slot].bio == bio)
 			break;
@@ -339,7 +333,6 @@ static int raid10_end_write_request(struct bio *bio, unsigned int bytes_done, in
 	}
 
 	rdev_dec_pending(conf->mirrors[dev].rdev, conf->mddev);
-	return 0;
 }
 
 
@@ -787,7 +780,7 @@ static int make_request(struct request_queue *q, struct bio * bio)
 	unsigned long flags;
 
 	if (unlikely(bio_barrier(bio))) {
-		bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
+		bio_endio(bio, -EOPNOTSUPP);
 		return 0;
 	}
 
@@ -819,7 +812,7 @@ static int make_request(struct request_queue *q, struct bio * bio)
 		       " or bigger than %dk %llu %d\n", chunk_sects/2,
 		       (unsigned long long)bio->bi_sector, bio->bi_size >> 10);
 
-		bio_io_error(bio, bio->bi_size);
+		bio_io_error(bio);
 		return 0;
 	}
 
@@ -1155,15 +1148,12 @@ abort:
 }
 
 
-static int end_sync_read(struct bio *bio, unsigned int bytes_done, int error)
+static void end_sync_read(struct bio *bio, int error)
 {
 	r10bio_t * r10_bio = (r10bio_t *)(bio->bi_private);
 	conf_t *conf = mddev_to_conf(r10_bio->mddev);
 	int i,d;
 
-	if (bio->bi_size)
-		return 1;
-
 	for (i=0; i<conf->copies; i++)
 		if (r10_bio->devs[i].bio == bio)
 			break;
@@ -1192,10 +1182,9 @@ static int end_sync_read(struct bio *bio, unsigned int bytes_done, int error)
 		reschedule_retry(r10_bio);
 	}
 	rdev_dec_pending(conf->mirrors[d].rdev, conf->mddev);
-	return 0;
 }
 
-static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error)
+static void end_sync_write(struct bio *bio, int error)
 {
 	int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
 	r10bio_t * r10_bio = (r10bio_t *)(bio->bi_private);
@@ -1203,9 +1192,6 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error)
 	conf_t *conf = mddev_to_conf(mddev);
 	int i,d;
 
-	if (bio->bi_size)
-		return 1;
-
 	for (i = 0; i < conf->copies; i++)
 		if (r10_bio->devs[i].bio == bio)
 			break;
@@ -1228,7 +1214,6 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error)
 		}
 	}
 	rdev_dec_pending(conf->mirrors[d].rdev, mddev);
-	return 0;
 }
 
 /*
@@ -1374,7 +1359,7 @@ static void recovery_request_write(mddev_t *mddev, r10bio_t *r10_bio)
 	if (test_bit(R10BIO_Uptodate, &r10_bio->state))
 		generic_make_request(wbio);
 	else
-		bio_endio(wbio, wbio->bi_size, -EIO);
+		bio_endio(wbio, -EIO);
 }
 
 

drivers/md/raid5.c

@@ -108,12 +108,11 @@ static void return_io(struct bio *return_bi)
 {
 	struct bio *bi = return_bi;
 	while (bi) {
-		int bytes = bi->bi_size;
 
 		return_bi = bi->bi_next;
 		bi->bi_next = NULL;
 		bi->bi_size = 0;
-		bi->bi_end_io(bi, bytes,
+		bi->bi_end_io(bi,
 			      test_bit(BIO_UPTODATE, &bi->bi_flags)
 			        ? 0 : -EIO);
 		bi = return_bi;
@@ -382,10 +381,10 @@ static unsigned long get_stripe_work(struct stripe_head *sh)
 	return pending;
 }
 
-static int
-raid5_end_read_request(struct bio *bi, unsigned int bytes_done, int error);
-static int
-raid5_end_write_request (struct bio *bi, unsigned int bytes_done, int error);
+static void
+raid5_end_read_request(struct bio *bi, int error);
+static void
+raid5_end_write_request(struct bio *bi, int error);
 
 static void ops_run_io(struct stripe_head *sh)
 {
@@ -1110,8 +1109,7 @@ static void shrink_stripes(raid5_conf_t *conf)
 	conf->slab_cache = NULL;
 }
 
-static int raid5_end_read_request(struct bio * bi, unsigned int bytes_done,
-				   int error)
+static void raid5_end_read_request(struct bio * bi, int error)
 {
  	struct stripe_head *sh = bi->bi_private;
 	raid5_conf_t *conf = sh->raid_conf;
@@ -1120,8 +1118,6 @@ static int raid5_end_read_request(struct bio * bi, unsigned int bytes_done,
 	char b[BDEVNAME_SIZE];
 	mdk_rdev_t *rdev;
 
-	if (bi->bi_size)
-		return 1;
 
 	for (i=0 ; i<disks; i++)
 		if (bi == &sh->dev[i].req)
@@ -1132,7 +1128,7 @@ static int raid5_end_read_request(struct bio * bi, unsigned int bytes_done,
 		uptodate);
 	if (i == disks) {
 		BUG();
-		return 0;
+		return;
 	}
 
 	if (uptodate) {
@@ -1185,20 +1181,15 @@ static int raid5_end_read_request(struct bio * bi, unsigned int bytes_done,
 	clear_bit(R5_LOCKED, &sh->dev[i].flags);
 	set_bit(STRIPE_HANDLE, &sh->state);
 	release_stripe(sh);
-	return 0;
 }
 
-static int raid5_end_write_request (struct bio *bi, unsigned int bytes_done,
-				    int error)
+static void raid5_end_write_request (struct bio *bi, int error)
 {
  	struct stripe_head *sh = bi->bi_private;
 	raid5_conf_t *conf = sh->raid_conf;
 	int disks = sh->disks, i;
 	int uptodate = test_bit(BIO_UPTODATE, &bi->bi_flags);
 
-	if (bi->bi_size)
-		return 1;
-
 	for (i=0 ; i<disks; i++)
 		if (bi == &sh->dev[i].req)
 			break;
@@ -1208,7 +1199,7 @@ static int raid5_end_write_request (struct bio *bi, unsigned int bytes_done,
 		uptodate);
 	if (i == disks) {
 		BUG();
-		return 0;
+		return;
 	}
 
 	if (!uptodate)
@@ -1219,7 +1210,6 @@ static int raid5_end_write_request (struct bio *bi, unsigned int bytes_done,
 	clear_bit(R5_LOCKED, &sh->dev[i].flags);
 	set_bit(STRIPE_HANDLE, &sh->state);
 	release_stripe(sh);
-	return 0;
 }
 
 
@@ -3340,7 +3330,7 @@ static struct bio *remove_bio_from_retry(raid5_conf_t *conf)
  *  first).
  *  If the read failed..
  */
-static int raid5_align_endio(struct bio *bi, unsigned int bytes, int error)
+static void raid5_align_endio(struct bio *bi, int error)
 {
 	struct bio* raid_bi  = bi->bi_private;
 	mddev_t *mddev;
@@ -3348,8 +3338,6 @@ static int raid5_align_endio(struct bio *bi, unsigned int bytes, int error)
 	int uptodate = test_bit(BIO_UPTODATE, &bi->bi_flags);
 	mdk_rdev_t *rdev;
 
-	if (bi->bi_size)
-		return 1;
 	bio_put(bi);
 
 	mddev = raid_bi->bi_bdev->bd_disk->queue->queuedata;
@@ -3360,17 +3348,16 @@ static int raid5_align_endio(struct bio *bi, unsigned int bytes, int error)
 	rdev_dec_pending(rdev, conf->mddev);
 
 	if (!error && uptodate) {
-		bio_endio(raid_bi, bytes, 0);
+		bio_endio(raid_bi, 0);
 		if (atomic_dec_and_test(&conf->active_aligned_reads))
 			wake_up(&conf->wait_for_stripe);
-		return 0;
+		return;
 	}
 
 
 	pr_debug("raid5_align_endio : io error...handing IO for a retry\n");
 
 	add_bio_to_retry(raid_bi, conf);
-	return 0;
 }
 
 static int bio_fits_rdev(struct bio *bi)
@@ -3476,7 +3463,7 @@ static int make_request(struct request_queue *q, struct bio * bi)
 	int remaining;
 
 	if (unlikely(bio_barrier(bi))) {
-		bio_endio(bi, bi->bi_size, -EOPNOTSUPP);
+		bio_endio(bi, -EOPNOTSUPP);
 		return 0;
 	}
 
@@ -3592,12 +3579,11 @@ static int make_request(struct request_queue *q, struct bio * bi)
 	remaining = --bi->bi_phys_segments;
 	spin_unlock_irq(&conf->device_lock);
 	if (remaining == 0) {
-		int bytes = bi->bi_size;
 
 		if ( rw == WRITE )
 			md_write_end(mddev);
-		bi->bi_size = 0;
-		bi->bi_end_io(bi, bytes,
+
+		bi->bi_end_io(bi,
 			      test_bit(BIO_UPTODATE, &bi->bi_flags)
 			        ? 0 : -EIO);
 	}
@@ -3875,10 +3861,8 @@ static int  retry_aligned_read(raid5_conf_t *conf, struct bio *raid_bio)
 	remaining = --raid_bio->bi_phys_segments;
 	spin_unlock_irq(&conf->device_lock);
 	if (remaining == 0) {
-		int bytes = raid_bio->bi_size;
 
-		raid_bio->bi_size = 0;
-		raid_bio->bi_end_io(raid_bio, bytes,
+		raid_bio->bi_end_io(raid_bio,
 			      test_bit(BIO_UPTODATE, &raid_bio->bi_flags)
 			        ? 0 : -EIO);
 	}

drivers/s390/block/dasd_diag.c

@@ -472,14 +472,13 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req)
 	struct dasd_ccw_req *cqr;
 	struct dasd_diag_req *dreq;
 	struct dasd_diag_bio *dbio;
-	struct bio *bio;
+	struct req_iterator iter;
 	struct bio_vec *bv;
 	char *dst;
 	unsigned int count, datasize;
 	sector_t recid, first_rec, last_rec;
 	unsigned int blksize, off;
 	unsigned char rw_cmd;
-	int i;
 
 	if (rq_data_dir(req) == READ)
 		rw_cmd = MDSK_READ_REQ;
@@ -493,13 +492,11 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req)
 	last_rec = (req->sector + req->nr_sectors - 1) >> device->s2b_shift;
 	/* Check struct bio and count the number of blocks for the request. */
 	count = 0;
-	rq_for_each_bio(bio, req) {
-		bio_for_each_segment(bv, bio, i) {
-			if (bv->bv_len & (blksize - 1))
-				/* Fba can only do full blocks. */
-				return ERR_PTR(-EINVAL);
-			count += bv->bv_len >> (device->s2b_shift + 9);
-		}
+	rq_for_each_segment(bv, req, iter) {
+		if (bv->bv_len & (blksize - 1))
+			/* Fba can only do full blocks. */
+			return ERR_PTR(-EINVAL);
+		count += bv->bv_len >> (device->s2b_shift + 9);
 	}
 	/* Paranoia. */
 	if (count != last_rec - first_rec + 1)
@@ -516,18 +513,16 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req)
 	dreq->block_count = count;
 	dbio = dreq->bio;
 	recid = first_rec;
-	rq_for_each_bio(bio, req) {
-		bio_for_each_segment(bv, bio, i) {
-			dst = page_address(bv->bv_page) + bv->bv_offset;
-			for (off = 0; off < bv->bv_len; off += blksize) {
-				memset(dbio, 0, sizeof (struct dasd_diag_bio));
-				dbio->type = rw_cmd;
-				dbio->block_number = recid + 1;
-				dbio->buffer = dst;
-				dbio++;
-				dst += blksize;
-				recid++;
-			}
+	rq_for_each_segment(bv, req, iter) {
+		dst = page_address(bv->bv_page) + bv->bv_offset;
+		for (off = 0; off < bv->bv_len; off += blksize) {
+			memset(dbio, 0, sizeof (struct dasd_diag_bio));
+			dbio->type = rw_cmd;
+			dbio->block_number = recid + 1;
+			dbio->buffer = dst;
+			dbio++;
+			dst += blksize;
+			recid++;
 		}
 	}
 	cqr->retries = DIAG_MAX_RETRIES;

drivers/s390/block/dasd_eckd.c

@@ -1176,7 +1176,7 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
 	struct LO_eckd_data *LO_data;
 	struct dasd_ccw_req *cqr;
 	struct ccw1 *ccw;
-	struct bio *bio;
+	struct req_iterator iter;
 	struct bio_vec *bv;
 	char *dst;
 	unsigned int blksize, blk_per_trk, off;
@@ -1185,7 +1185,6 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
 	sector_t first_trk, last_trk;
 	unsigned int first_offs, last_offs;
 	unsigned char cmd, rcmd;
-	int i;
 
 	private = (struct dasd_eckd_private *) device->private;
 	if (rq_data_dir(req) == READ)
@@ -1206,18 +1205,15 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
 	/* Check struct bio and count the number of blocks for the request. */
 	count = 0;
 	cidaw = 0;
-	rq_for_each_bio(bio, req) {
-		bio_for_each_segment(bv, bio, i) {
-			if (bv->bv_len & (blksize - 1))
-				/* Eckd can only do full blocks. */
-				return ERR_PTR(-EINVAL);
-			count += bv->bv_len >> (device->s2b_shift + 9);
+	rq_for_each_segment(bv, req, iter) {
+		if (bv->bv_len & (blksize - 1))
+			/* Eckd can only do full blocks. */
+			return ERR_PTR(-EINVAL);
+		count += bv->bv_len >> (device->s2b_shift + 9);
 #if defined(CONFIG_64BIT)
-			if (idal_is_needed (page_address(bv->bv_page),
-					    bv->bv_len))
-				cidaw += bv->bv_len >> (device->s2b_shift + 9);
+		if (idal_is_needed (page_address(bv->bv_page), bv->bv_len))
+			cidaw += bv->bv_len >> (device->s2b_shift + 9);
 #endif
-		}
 	}
 	/* Paranoia. */
 	if (count != last_rec - first_rec + 1)
@@ -1257,7 +1253,7 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
 		locate_record(ccw++, LO_data++, first_trk, first_offs + 1,
 			      last_rec - recid + 1, cmd, device, blksize);
 	}
-	rq_for_each_bio(bio, req) bio_for_each_segment(bv, bio, i) {
+	rq_for_each_segment(bv, req, iter) {
 		dst = page_address(bv->bv_page) + bv->bv_offset;
 		if (dasd_page_cache) {
 			char *copy = kmem_cache_alloc(dasd_page_cache,
@@ -1328,12 +1324,12 @@ dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req)
 {
 	struct dasd_eckd_private *private;
 	struct ccw1 *ccw;
-	struct bio *bio;
+	struct req_iterator iter;
 	struct bio_vec *bv;
 	char *dst, *cda;
 	unsigned int blksize, blk_per_trk, off;
 	sector_t recid;
-	int i, status;
+	int status;
 
 	if (!dasd_page_cache)
 		goto out;
@@ -1346,7 +1342,7 @@ dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req)
 	ccw++;
 	if (private->uses_cdl == 0 || recid > 2*blk_per_trk)
 		ccw++;
-	rq_for_each_bio(bio, req) bio_for_each_segment(bv, bio, i) {
+	rq_for_each_segment(bv, req, iter) {
 		dst = page_address(bv->bv_page) + bv->bv_offset;
 		for (off = 0; off < bv->bv_len; off += blksize) {
 			/* Skip locate record. */

drivers/s390/block/dasd_fba.c

@@ -234,14 +234,13 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req)
 	struct LO_fba_data *LO_data;
 	struct dasd_ccw_req *cqr;
 	struct ccw1 *ccw;
-	struct bio *bio;
+	struct req_iterator iter;
 	struct bio_vec *bv;
 	char *dst;
 	int count, cidaw, cplength, datasize;
 	sector_t recid, first_rec, last_rec;
 	unsigned int blksize, off;
 	unsigned char cmd;
-	int i;
 
 	private = (struct dasd_fba_private *) device->private;
 	if (rq_data_dir(req) == READ) {
@@ -257,18 +256,15 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req)
 	/* Check struct bio and count the number of blocks for the request. */
 	count = 0;
 	cidaw = 0;
-	rq_for_each_bio(bio, req) {
-		bio_for_each_segment(bv, bio, i) {
-			if (bv->bv_len & (blksize - 1))
-				/* Fba can only do full blocks. */
-				return ERR_PTR(-EINVAL);
-			count += bv->bv_len >> (device->s2b_shift + 9);
+	rq_for_each_segment(bv, req, iter) {
+		if (bv->bv_len & (blksize - 1))
+			/* Fba can only do full blocks. */
+			return ERR_PTR(-EINVAL);
+		count += bv->bv_len >> (device->s2b_shift + 9);
 #if defined(CONFIG_64BIT)
-			if (idal_is_needed (page_address(bv->bv_page),
-					    bv->bv_len))
-				cidaw += bv->bv_len / blksize;
+		if (idal_is_needed (page_address(bv->bv_page), bv->bv_len))
+			cidaw += bv->bv_len / blksize;
 #endif
-		}
 	}
 	/* Paranoia. */
 	if (count != last_rec - first_rec + 1)
@@ -304,7 +300,7 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req)
 		locate_record(ccw++, LO_data++, rq_data_dir(req), 0, count);
 	}
 	recid = first_rec;
-	rq_for_each_bio(bio, req) bio_for_each_segment(bv, bio, i) {
+	rq_for_each_segment(bv, req, iter) {
 		dst = page_address(bv->bv_page) + bv->bv_offset;
 		if (dasd_page_cache) {
 			char *copy = kmem_cache_alloc(dasd_page_cache,
@@ -359,11 +355,11 @@ dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req)
 {
 	struct dasd_fba_private *private;
 	struct ccw1 *ccw;
-	struct bio *bio;
+	struct req_iterator iter;
 	struct bio_vec *bv;
 	char *dst, *cda;
 	unsigned int blksize, off;
-	int i, status;
+	int status;
 
 	if (!dasd_page_cache)
 		goto out;
@@ -374,7 +370,7 @@ dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req)
 	ccw++;
 	if (private->rdc_data.mode.bits.data_chain != 0)
 		ccw++;
-	rq_for_each_bio(bio, req) bio_for_each_segment(bv, bio, i) {
+	rq_for_each_segment(bv, req, iter) {
 		dst = page_address(bv->bv_page) + bv->bv_offset;
 		for (off = 0; off < bv->bv_len; off += blksize) {
 			/* Skip locate record. */

drivers/s390/block/dcssblk.c

@@ -674,10 +674,10 @@ dcssblk_make_request(struct request_queue *q, struct bio *bio)
 		}
 		bytes_done += bvec->bv_len;
 	}
-	bio_endio(bio, bytes_done, 0);
+	bio_endio(bio, 0);
 	return 0;
 fail:
-	bio_io_error(bio, bio->bi_size);
+	bio_io_error(bio);
 	return 0;
 }
 

drivers/s390/block/xpram.c

@@ -230,12 +230,10 @@ static int xpram_make_request(struct request_queue *q, struct bio *bio)
 		}
 	}
 	set_bit(BIO_UPTODATE, &bio->bi_flags);
-	bytes = bio->bi_size;
-	bio->bi_size = 0;
-	bio->bi_end_io(bio, bytes, 0);
+	bio_end_io(bio, 0);
 	return 0;
 fail:
-	bio_io_error(bio, bio->bi_size);
+	bio_io_error(bio);
 	return 0;
 }
 

drivers/s390/char/tape_34xx.c

@@ -1134,21 +1134,18 @@ tape_34xx_bread(struct tape_device *device, struct request *req)
 {
 	struct tape_request *request;
 	struct ccw1 *ccw;
-	int count = 0, i;
+	int count = 0;
 	unsigned off;
 	char *dst;
 	struct bio_vec *bv;
-	struct bio *bio;
+	struct req_iterator iter;
 	struct tape_34xx_block_id *	start_block;
 
 	DBF_EVENT(6, "xBREDid:");
 
 	/* Count the number of blocks for the request. */
-	rq_for_each_bio(bio, req) {
-		bio_for_each_segment(bv, bio, i) {
-			count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9);
-		}
-	}
+	rq_for_each_segment(bv, req, iter)
+		count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9);
 
 	/* Allocate the ccw request. */
 	request = tape_alloc_request(3+count+1, 8);
@@ -1175,18 +1172,15 @@ tape_34xx_bread(struct tape_device *device, struct request *req)
 	ccw = tape_ccw_cc(ccw, NOP, 0, NULL);
 	ccw = tape_ccw_cc(ccw, NOP, 0, NULL);
 
-	rq_for_each_bio(bio, req) {
-		bio_for_each_segment(bv, bio, i) {
-			dst = kmap(bv->bv_page) + bv->bv_offset;
-			for (off = 0; off < bv->bv_len;
-			     off += TAPEBLOCK_HSEC_SIZE) {
-				ccw->flags = CCW_FLAG_CC;
-				ccw->cmd_code = READ_FORWARD;
-				ccw->count = TAPEBLOCK_HSEC_SIZE;
-				set_normalized_cda(ccw, (void*) __pa(dst));
-				ccw++;
-				dst += TAPEBLOCK_HSEC_SIZE;
-			}
+	rq_for_each_segment(bv, req, iter) {
+		dst = kmap(bv->bv_page) + bv->bv_offset;
+		for (off = 0; off < bv->bv_len; off += TAPEBLOCK_HSEC_SIZE) {
+			ccw->flags = CCW_FLAG_CC;
+			ccw->cmd_code = READ_FORWARD;
+			ccw->count = TAPEBLOCK_HSEC_SIZE;
+			set_normalized_cda(ccw, (void*) __pa(dst));
+			ccw++;
+			dst += TAPEBLOCK_HSEC_SIZE;
 		}
 	}
 

drivers/s390/char/tape_3590.c

@@ -623,21 +623,19 @@ tape_3590_bread(struct tape_device *device, struct request *req)
 {
 	struct tape_request *request;
 	struct ccw1 *ccw;
-	int count = 0, start_block, i;
+	int count = 0, start_block;
 	unsigned off;
 	char *dst;
 	struct bio_vec *bv;
-	struct bio *bio;
+	struct req_iterator iter;
 
 	DBF_EVENT(6, "xBREDid:");
 	start_block = req->sector >> TAPEBLOCK_HSEC_S2B;
 	DBF_EVENT(6, "start_block = %i\n", start_block);
 
-	rq_for_each_bio(bio, req) {
-		bio_for_each_segment(bv, bio, i) {
-			count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9);
-		}
-	}
+	rq_for_each_segment(bv, req, iter)
+		count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9);
+
 	request = tape_alloc_request(2 + count + 1, 4);
 	if (IS_ERR(request))
 		return request;
@@ -653,21 +651,18 @@ tape_3590_bread(struct tape_device *device, struct request *req)
 	 */
 	ccw = tape_ccw_cc(ccw, NOP, 0, NULL);
 
-	rq_for_each_bio(bio, req) {
-		bio_for_each_segment(bv, bio, i) {
-			dst = page_address(bv->bv_page) + bv->bv_offset;
-			for (off = 0; off < bv->bv_len;
-			     off += TAPEBLOCK_HSEC_SIZE) {
-				ccw->flags = CCW_FLAG_CC;
-				ccw->cmd_code = READ_FORWARD;
-				ccw->count = TAPEBLOCK_HSEC_SIZE;
-				set_normalized_cda(ccw, (void *) __pa(dst));
-				ccw++;
-				dst += TAPEBLOCK_HSEC_SIZE;
-			}
-			if (off > bv->bv_len)
-				BUG();
+	rq_for_each_segment(bv, req, iter) {
+		dst = page_address(bv->bv_page) + bv->bv_offset;
+		for (off = 0; off < bv->bv_len; off += TAPEBLOCK_HSEC_SIZE) {
+			ccw->flags = CCW_FLAG_CC;
+			ccw->cmd_code = READ_FORWARD;
+			ccw->count = TAPEBLOCK_HSEC_SIZE;
+			set_normalized_cda(ccw, (void *) __pa(dst));
+			ccw++;
+			dst += TAPEBLOCK_HSEC_SIZE;
 		}
+		if (off > bv->bv_len)
+			BUG();
 	}
 	ccw = tape_ccw_end(ccw, NOP, 0, NULL);
 	DBF_EVENT(6, "xBREDccwg\n");

drivers/scsi/scsi_lib.c

@@ -263,25 +263,12 @@ static int scsi_merge_bio(struct request *rq, struct bio *bio)
 		bio->bi_rw |= (1 << BIO_RW);
 	blk_queue_bounce(q, &bio);
 
-	if (!rq->bio)
-		blk_rq_bio_prep(q, rq, bio);
-	else if (!ll_back_merge_fn(q, rq, bio))
-		return -EINVAL;
-	else {
-		rq->biotail->bi_next = bio;
-		rq->biotail = bio;
-	}
-
-	return 0;
+	return blk_rq_append_bio(q, rq, bio);
 }
 
-static int scsi_bi_endio(struct bio *bio, unsigned int bytes_done, int error)
+static void scsi_bi_endio(struct bio *bio, int error)
 {
-	if (bio->bi_size)
-		return 1;
-
 	bio_put(bio);
-	return 0;
 }
 
 /**
@@ -337,7 +324,7 @@ static int scsi_req_map_sg(struct request *rq, struct scatterlist *sgl,
 			if (bio->bi_vcnt >= nr_vecs) {
 				err = scsi_merge_bio(rq, bio);
 				if (err) {
-					bio_endio(bio, bio->bi_size, 0);
+					bio_endio(bio, 0);
 					goto free_bios;
 				}
 				bio = NULL;
@@ -359,7 +346,7 @@ free_bios:
 		/*
 		 * call endio instead of bio_put incase it was bounced
 		 */
-		bio_endio(bio, bio->bi_size, 0);
+		bio_endio(bio, 0);
 	}
 
 	return err;

fs/bio.c

@@ -798,13 +798,9 @@ void bio_unmap_user(struct bio *bio)
 	bio_put(bio);
 }
 
-static int bio_map_kern_endio(struct bio *bio, unsigned int bytes_done, int err)
+static void bio_map_kern_endio(struct bio *bio, int err)
 {
-	if (bio->bi_size)
-		return 1;
-
 	bio_put(bio);
-	return 0;
 }
 
 
@@ -1002,34 +998,26 @@ void bio_check_pages_dirty(struct bio *bio)
 /**
  * bio_endio - end I/O on a bio
  * @bio:	bio
- * @bytes_done:	number of bytes completed
  * @error:	error, if any
  *
  * Description:
- *   bio_endio() will end I/O on @bytes_done number of bytes. This may be
- *   just a partial part of the bio, or it may be the whole bio. bio_endio()
- *   is the preferred way to end I/O on a bio, it takes care of decrementing
- *   bi_size and clearing BIO_UPTODATE on error. @error is 0 on success, and
- *   and one of the established -Exxxx (-EIO, for instance) error values in
- *   case something went wrong. Noone should call bi_end_io() directly on
- *   a bio unless they own it and thus know that it has an end_io function.
+ *   bio_endio() will end I/O on the whole bio. bio_endio() is the
+ *   preferred way to end I/O on a bio, it takes care of clearing
+ *   BIO_UPTODATE on error. @error is 0 on success, and and one of the
+ *   established -Exxxx (-EIO, for instance) error values in case
+ *   something went wrong. Noone should call bi_end_io() directly on a
+ *   bio unless they own it and thus know that it has an end_io
+ *   function.
  **/
-void bio_endio(struct bio *bio, unsigned int bytes_done, int error)
+void bio_endio(struct bio *bio, int error)
 {
 	if (error)
 		clear_bit(BIO_UPTODATE, &bio->bi_flags);
-
-	if (unlikely(bytes_done > bio->bi_size)) {
-		printk("%s: want %u bytes done, only %u left\n", __FUNCTION__,
-						bytes_done, bio->bi_size);
-		bytes_done = bio->bi_size;
-	}
-
-	bio->bi_size -= bytes_done;
-	bio->bi_sector += (bytes_done >> 9);
+	else if (!test_bit(BIO_UPTODATE, &bio->bi_flags))
+		error = -EIO;
 
 	if (bio->bi_end_io)
-		bio->bi_end_io(bio, bytes_done, error);
+		bio->bi_end_io(bio, error);
 }
 
 void bio_pair_release(struct bio_pair *bp)
@@ -1037,37 +1025,29 @@ void bio_pair_release(struct bio_pair *bp)
 	if (atomic_dec_and_test(&bp->cnt)) {
 		struct bio *master = bp->bio1.bi_private;
 
-		bio_endio(master, master->bi_size, bp->error);
+		bio_endio(master, bp->error);
 		mempool_free(bp, bp->bio2.bi_private);
 	}
 }
 
-static int bio_pair_end_1(struct bio * bi, unsigned int done, int err)
+static void bio_pair_end_1(struct bio *bi, int err)
 {
 	struct bio_pair *bp = container_of(bi, struct bio_pair, bio1);
 
 	if (err)
 		bp->error = err;
 
-	if (bi->bi_size)
-		return 1;
-
 	bio_pair_release(bp);
-	return 0;
 }
 
-static int bio_pair_end_2(struct bio * bi, unsigned int done, int err)
+static void bio_pair_end_2(struct bio *bi, int err)
 {
 	struct bio_pair *bp = container_of(bi, struct bio_pair, bio2);
 
 	if (err)
 		bp->error = err;
 
-	if (bi->bi_size)
-		return 1;
-
 	bio_pair_release(bp);
-	return 0;
 }
 
 /*

fs/block_dev.c

@@ -172,7 +172,7 @@ blkdev_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
 }
 
 #if 0
-static int blk_end_aio(struct bio *bio, unsigned int bytes_done, int error)
+static void blk_end_aio(struct bio *bio, int error)
 {
 	struct kiocb *iocb = bio->bi_private;
 	atomic_t *bio_count = &iocb->ki_bio_count;

fs/buffer.c

@@ -2634,13 +2634,10 @@ sector_t generic_block_bmap(struct address_space *mapping, sector_t block,
 	return tmp.b_blocknr;
 }
 
-static int end_bio_bh_io_sync(struct bio *bio, unsigned int bytes_done, int err)
+static void end_bio_bh_io_sync(struct bio *bio, int err)
 {
 	struct buffer_head *bh = bio->bi_private;
 
-	if (bio->bi_size)
-		return 1;
-
 	if (err == -EOPNOTSUPP) {
 		set_bit(BIO_EOPNOTSUPP, &bio->bi_flags);
 		set_bit(BH_Eopnotsupp, &bh->b_state);
@@ -2648,7 +2645,6 @@ static int end_bio_bh_io_sync(struct bio *bio, unsigned int bytes_done, int err)
 
 	bh->b_end_io(bh, test_bit(BIO_UPTODATE, &bio->bi_flags));
 	bio_put(bio);
-	return 0;
 }
 
 int submit_bh(int rw, struct buffer_head * bh)

fs/compat_ioctl.c

@@ -21,7 +21,6 @@
 #include <linux/if.h>
 #include <linux/if_bridge.h>
 #include <linux/slab.h>
-#include <linux/hdreg.h>
 #include <linux/raid/md.h>
 #include <linux/kd.h>
 #include <linux/dirent.h>
@@ -33,12 +32,10 @@
 #include <linux/vt.h>
 #include <linux/fs.h>
 #include <linux/file.h>
-#include <linux/fd.h>
 #include <linux/ppp_defs.h>
 #include <linux/if_ppp.h>
 #include <linux/if_pppox.h>
 #include <linux/mtio.h>
-#include <linux/cdrom.h>
 #include <linux/auto_fs.h>
 #include <linux/auto_fs4.h>
 #include <linux/tty.h>
@@ -48,7 +45,6 @@
 #include <linux/netdevice.h>
 #include <linux/raw.h>
 #include <linux/smb_fs.h>
-#include <linux/blkpg.h>
 #include <linux/blkdev.h>
 #include <linux/elevator.h>
 #include <linux/rtc.h>
@@ -62,7 +58,6 @@
 #include <linux/i2c-dev.h>
 #include <linux/wireless.h>
 #include <linux/atalk.h>
-#include <linux/blktrace_api.h>
 #include <linux/loop.h>
 
 #include <net/bluetooth/bluetooth.h>
@@ -668,53 +663,6 @@ out:
 #endif
 
 #ifdef CONFIG_BLOCK
-struct hd_geometry32 {
-	unsigned char heads;
-	unsigned char sectors;
-	unsigned short cylinders;
-	u32 start;
-};
-                        
-static int hdio_getgeo(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
-	mm_segment_t old_fs = get_fs();
-	struct hd_geometry geo;
-	struct hd_geometry32 __user *ugeo;
-	int err;
-	
-	set_fs (KERNEL_DS);
-	err = sys_ioctl(fd, HDIO_GETGEO, (unsigned long)&geo);
-	set_fs (old_fs);
-	ugeo = compat_ptr(arg);
-	if (!err) {
-		err = copy_to_user (ugeo, &geo, 4);
-		err |= __put_user (geo.start, &ugeo->start);
-		if (err)
-			err = -EFAULT;
-	}
-	return err;
-}
-
-static int hdio_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
-	mm_segment_t old_fs = get_fs();
-	unsigned long kval;
-	unsigned int __user *uvp;
-	int error;
-
-	set_fs(KERNEL_DS);
-	error = sys_ioctl(fd, cmd, (long)&kval);
-	set_fs(old_fs);
-
-	if(error == 0) {
-		uvp = compat_ptr(arg);
-		if(put_user(kval, uvp))
-			error = -EFAULT;
-	}
-	return error;
-}
-
-
 typedef struct sg_io_hdr32 {
 	compat_int_t interface_id;	/* [i] 'S' for SCSI generic (required) */
 	compat_int_t dxfer_direction;	/* [i] data transfer direction  */
@@ -1089,108 +1037,6 @@ static int mt_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg)
 	return err ? -EFAULT: 0;
 }
 
-struct cdrom_read_audio32 {
-	union cdrom_addr	addr;
-	u8			addr_format;
-	compat_int_t		nframes;
-	compat_caddr_t		buf;
-};
-
-struct cdrom_generic_command32 {
-	unsigned char	cmd[CDROM_PACKET_SIZE];
-	compat_caddr_t	buffer;
-	compat_uint_t	buflen;
-	compat_int_t	stat;
-	compat_caddr_t	sense;
-	unsigned char	data_direction;
-	compat_int_t	quiet;
-	compat_int_t	timeout;
-	compat_caddr_t	reserved[1];
-};
-  
-static int cdrom_do_read_audio(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
-	struct cdrom_read_audio __user *cdread_audio;
-	struct cdrom_read_audio32 __user *cdread_audio32;
-	__u32 data;
-	void __user *datap;
-
-	cdread_audio = compat_alloc_user_space(sizeof(*cdread_audio));
-	cdread_audio32 = compat_ptr(arg);
-
-	if (copy_in_user(&cdread_audio->addr,
-			 &cdread_audio32->addr,
-			 (sizeof(*cdread_audio32) -
-			  sizeof(compat_caddr_t))))
-	 	return -EFAULT;
-
-	if (get_user(data, &cdread_audio32->buf))
-		return -EFAULT;
-	datap = compat_ptr(data);
-	if (put_user(datap, &cdread_audio->buf))
-		return -EFAULT;
-
-	return sys_ioctl(fd, cmd, (unsigned long) cdread_audio);
-}
-
-static int cdrom_do_generic_command(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
-	struct cdrom_generic_command __user *cgc;
-	struct cdrom_generic_command32 __user *cgc32;
-	u32 data;
-	unsigned char dir;
-	int itmp;
-
-	cgc = compat_alloc_user_space(sizeof(*cgc));
-	cgc32 = compat_ptr(arg);
-
-	if (copy_in_user(&cgc->cmd, &cgc32->cmd, sizeof(cgc->cmd)) ||
-	    get_user(data, &cgc32->buffer) ||
-	    put_user(compat_ptr(data), &cgc->buffer) ||
-	    copy_in_user(&cgc->buflen, &cgc32->buflen,
-			 (sizeof(unsigned int) + sizeof(int))) ||
-	    get_user(data, &cgc32->sense) ||
-	    put_user(compat_ptr(data), &cgc->sense) ||
-	    get_user(dir, &cgc32->data_direction) ||
-	    put_user(dir, &cgc->data_direction) ||
-	    get_user(itmp, &cgc32->quiet) ||
-	    put_user(itmp, &cgc->quiet) ||
-	    get_user(itmp, &cgc32->timeout) ||
-	    put_user(itmp, &cgc->timeout) ||
-	    get_user(data, &cgc32->reserved[0]) ||
-	    put_user(compat_ptr(data), &cgc->reserved[0]))
-		return -EFAULT;
-
-	return sys_ioctl(fd, cmd, (unsigned long) cgc);
-}
-
-static int cdrom_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
-	int err;
-
-	switch(cmd) {
-	case CDROMREADAUDIO:
-		err = cdrom_do_read_audio(fd, cmd, arg);
-		break;
-
-	case CDROM_SEND_PACKET:
-		err = cdrom_do_generic_command(fd, cmd, arg);
-		break;
-
-	default:
-		do {
-			static int count;
-			if (++count <= 20)
-				printk("cdrom_ioctl: Unknown cmd fd(%d) "
-				       "cmd(%08x) arg(%08x)\n",
-				       (int)fd, (unsigned int)cmd, (unsigned int)arg);
-		} while(0);
-		err = -EINVAL;
-		break;
-	};
-
-	return err;
-}
 #endif /* CONFIG_BLOCK */
 
 #ifdef CONFIG_VT
@@ -1536,71 +1382,11 @@ ret_einval(unsigned int fd, unsigned int cmd, unsigned long arg)
 	return -EINVAL;
 }
 
-#ifdef CONFIG_BLOCK
-static int broken_blkgetsize(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
-	/* The mkswap binary hard codes it to Intel value :-((( */
-	return w_long(fd, BLKGETSIZE, arg);
-}
-
-struct blkpg_ioctl_arg32 {
-	compat_int_t op;
-	compat_int_t flags;
-	compat_int_t datalen;
-	compat_caddr_t data;
-};
-
-static int blkpg_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
-	struct blkpg_ioctl_arg32 __user *ua32 = compat_ptr(arg);
-	struct blkpg_ioctl_arg __user *a = compat_alloc_user_space(sizeof(*a));
-	compat_caddr_t udata;
-	compat_int_t n;
-	int err;
-	
-	err = get_user(n, &ua32->op);
-	err |= put_user(n, &a->op);
-	err |= get_user(n, &ua32->flags);
-	err |= put_user(n, &a->flags);
-	err |= get_user(n, &ua32->datalen);
-	err |= put_user(n, &a->datalen);
-	err |= get_user(udata, &ua32->data);
-	err |= put_user(compat_ptr(udata), &a->data);
-	if (err)
-		return err;
-
-	return sys_ioctl(fd, cmd, (unsigned long)a);
-}
-#endif
-
 static int ioc_settimeout(unsigned int fd, unsigned int cmd, unsigned long arg)
 {
 	return rw_long(fd, AUTOFS_IOC_SETTIMEOUT, arg);
 }
 
-#ifdef CONFIG_BLOCK
-/* Fix sizeof(sizeof()) breakage */
-#define BLKBSZGET_32   _IOR(0x12,112,int)
-#define BLKBSZSET_32   _IOW(0x12,113,int)
-#define BLKGETSIZE64_32        _IOR(0x12,114,int)
-
-static int do_blkbszget(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
-       return sys_ioctl(fd, BLKBSZGET, (unsigned long)compat_ptr(arg));
-}
-
-static int do_blkbszset(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
-       return sys_ioctl(fd, BLKBSZSET, (unsigned long)compat_ptr(arg));
-}
-
-static int do_blkgetsize64(unsigned int fd, unsigned int cmd,
-                          unsigned long arg)
-{
-       return sys_ioctl(fd, BLKGETSIZE64, (unsigned long)compat_ptr(arg));
-}
-#endif
-
 /* Bluetooth ioctls */
 #define HCIUARTSETPROTO	_IOW('U', 200, int)
 #define HCIUARTGETPROTO	_IOR('U', 201, int)
@@ -1620,333 +1406,6 @@ static int do_blkgetsize64(unsigned int fd, unsigned int cmd,
 #define HIDPGETCONNLIST	_IOR('H', 210, int)
 #define HIDPGETCONNINFO	_IOR('H', 211, int)
 
-#ifdef CONFIG_BLOCK
-struct floppy_struct32 {
-	compat_uint_t	size;
-	compat_uint_t	sect;
-	compat_uint_t	head;
-	compat_uint_t	track;
-	compat_uint_t	stretch;
-	unsigned char	gap;
-	unsigned char	rate;
-	unsigned char	spec1;
-	unsigned char	fmt_gap;
-	const compat_caddr_t name;
-};
-
-struct floppy_drive_params32 {
-	char		cmos;
-	compat_ulong_t	max_dtr;
-	compat_ulong_t	hlt;
-	compat_ulong_t	hut;
-	compat_ulong_t	srt;
-	compat_ulong_t	spinup;
-	compat_ulong_t	spindown;
-	unsigned char	spindown_offset;
-	unsigned char	select_delay;
-	unsigned char	rps;
-	unsigned char	tracks;
-	compat_ulong_t	timeout;
-	unsigned char	interleave_sect;
-	struct floppy_max_errors max_errors;
-	char		flags;
-	char		read_track;
-	short		autodetect[8];
-	compat_int_t	checkfreq;
-	compat_int_t	native_format;
-};
-
-struct floppy_drive_struct32 {
-	signed char	flags;
-	compat_ulong_t	spinup_date;
-	compat_ulong_t	select_date;
-	compat_ulong_t	first_read_date;
-	short		probed_format;
-	short		track;
-	short		maxblock;
-	short		maxtrack;
-	compat_int_t	generation;
-	compat_int_t	keep_data;
-	compat_int_t	fd_ref;
-	compat_int_t	fd_device;
-	compat_int_t	last_checked;
-	compat_caddr_t dmabuf;
-	compat_int_t	bufblocks;
-};
-
-struct floppy_fdc_state32 {
-	compat_int_t	spec1;
-	compat_int_t	spec2;
-	compat_int_t	dtr;
-	unsigned char	version;
-	unsigned char	dor;
-	compat_ulong_t	address;
-	unsigned int	rawcmd:2;
-	unsigned int	reset:1;
-	unsigned int	need_configure:1;
-	unsigned int	perp_mode:2;
-	unsigned int	has_fifo:1;
-	unsigned int	driver_version;
-	unsigned char	track[4];
-};
-
-struct floppy_write_errors32 {
-	unsigned int	write_errors;
-	compat_ulong_t	first_error_sector;
-	compat_int_t	first_error_generation;
-	compat_ulong_t	last_error_sector;
-	compat_int_t	last_error_generation;
-	compat_uint_t	badness;
-};
-
-#define FDSETPRM32 _IOW(2, 0x42, struct floppy_struct32)
-#define FDDEFPRM32 _IOW(2, 0x43, struct floppy_struct32)
-#define FDGETPRM32 _IOR(2, 0x04, struct floppy_struct32)
-#define FDSETDRVPRM32 _IOW(2, 0x90, struct floppy_drive_params32)
-#define FDGETDRVPRM32 _IOR(2, 0x11, struct floppy_drive_params32)
-#define FDGETDRVSTAT32 _IOR(2, 0x12, struct floppy_drive_struct32)
-#define FDPOLLDRVSTAT32 _IOR(2, 0x13, struct floppy_drive_struct32)
-#define FDGETFDCSTAT32 _IOR(2, 0x15, struct floppy_fdc_state32)
-#define FDWERRORGET32  _IOR(2, 0x17, struct floppy_write_errors32)
-
-static struct {
-	unsigned int	cmd32;
-	unsigned int	cmd;
-} fd_ioctl_trans_table[] = {
-	{ FDSETPRM32, FDSETPRM },
-	{ FDDEFPRM32, FDDEFPRM },
-	{ FDGETPRM32, FDGETPRM },
-	{ FDSETDRVPRM32, FDSETDRVPRM },
-	{ FDGETDRVPRM32, FDGETDRVPRM },
-	{ FDGETDRVSTAT32, FDGETDRVSTAT },
-	{ FDPOLLDRVSTAT32, FDPOLLDRVSTAT },
-	{ FDGETFDCSTAT32, FDGETFDCSTAT },
-	{ FDWERRORGET32, FDWERRORGET }
-};
-
-#define NR_FD_IOCTL_TRANS ARRAY_SIZE(fd_ioctl_trans_table)
-
-static int fd_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
-	mm_segment_t old_fs = get_fs();
-	void *karg = NULL;
-	unsigned int kcmd = 0;
-	int i, err;
-
-	for (i = 0; i < NR_FD_IOCTL_TRANS; i++)
-		if (cmd == fd_ioctl_trans_table[i].cmd32) {
-			kcmd = fd_ioctl_trans_table[i].cmd;
-			break;
-		}
-	if (!kcmd)
-		return -EINVAL;
-
-	switch (cmd) {
-		case FDSETPRM32:
-		case FDDEFPRM32:
-		case FDGETPRM32:
-		{
-			compat_uptr_t name;
-			struct floppy_struct32 __user *uf;
-			struct floppy_struct *f;
-
-			uf = compat_ptr(arg);
-			f = karg = kmalloc(sizeof(struct floppy_struct), GFP_KERNEL);
-			if (!karg)
-				return -ENOMEM;
-			if (cmd == FDGETPRM32)
-				break;
-			err = __get_user(f->size, &uf->size);
-			err |= __get_user(f->sect, &uf->sect);
-			err |= __get_user(f->head, &uf->head);
-			err |= __get_user(f->track, &uf->track);
-			err |= __get_user(f->stretch, &uf->stretch);
-			err |= __get_user(f->gap, &uf->gap);
-			err |= __get_user(f->rate, &uf->rate);
-			err |= __get_user(f->spec1, &uf->spec1);
-			err |= __get_user(f->fmt_gap, &uf->fmt_gap);
-			err |= __get_user(name, &uf->name);
-			f->name = compat_ptr(name);
-			if (err) {
-				err = -EFAULT;
-				goto out;
-			}
-			break;
-		}
-		case FDSETDRVPRM32:
-		case FDGETDRVPRM32:
-		{
-			struct floppy_drive_params32 __user *uf;
-			struct floppy_drive_params *f;
-
-			uf = compat_ptr(arg);
-			f = karg = kmalloc(sizeof(struct floppy_drive_params), GFP_KERNEL);
-			if (!karg)
-				return -ENOMEM;
-			if (cmd == FDGETDRVPRM32)
-				break;
-			err = __get_user(f->cmos, &uf->cmos);
-			err |= __get_user(f->max_dtr, &uf->max_dtr);
-			err |= __get_user(f->hlt, &uf->hlt);
-			err |= __get_user(f->hut, &uf->hut);
-			err |= __get_user(f->srt, &uf->srt);
-			err |= __get_user(f->spinup, &uf->spinup);
-			err |= __get_user(f->spindown, &uf->spindown);
-			err |= __get_user(f->spindown_offset, &uf->spindown_offset);
-			err |= __get_user(f->select_delay, &uf->select_delay);
-			err |= __get_user(f->rps, &uf->rps);
-			err |= __get_user(f->tracks, &uf->tracks);
-			err |= __get_user(f->timeout, &uf->timeout);
-			err |= __get_user(f->interleave_sect, &uf->interleave_sect);
-			err |= __copy_from_user(&f->max_errors, &uf->max_errors, sizeof(f->max_errors));
-			err |= __get_user(f->flags, &uf->flags);
-			err |= __get_user(f->read_track, &uf->read_track);
-			err |= __copy_from_user(f->autodetect, uf->autodetect, sizeof(f->autodetect));
-			err |= __get_user(f->checkfreq, &uf->checkfreq);
-			err |= __get_user(f->native_format, &uf->native_format);
-			if (err) {
-				err = -EFAULT;
-				goto out;
-			}
-			break;
-		}
-		case FDGETDRVSTAT32:
-		case FDPOLLDRVSTAT32:
-			karg = kmalloc(sizeof(struct floppy_drive_struct), GFP_KERNEL);
-			if (!karg)
-				return -ENOMEM;
-			break;
-		case FDGETFDCSTAT32:
-			karg = kmalloc(sizeof(struct floppy_fdc_state), GFP_KERNEL);
-			if (!karg)
-				return -ENOMEM;
-			break;
-		case FDWERRORGET32:
-			karg = kmalloc(sizeof(struct floppy_write_errors), GFP_KERNEL);
-			if (!karg)
-				return -ENOMEM;
-			break;
-		default:
-			return -EINVAL;
-	}
-	set_fs (KERNEL_DS);
-	err = sys_ioctl (fd, kcmd, (unsigned long)karg);
-	set_fs (old_fs);
-	if (err)
-		goto out;
-	switch (cmd) {
-		case FDGETPRM32:
-		{
-			struct floppy_struct *f = karg;
-			struct floppy_struct32 __user *uf = compat_ptr(arg);
-
-			err = __put_user(f->size, &uf->size);
-			err |= __put_user(f->sect, &uf->sect);
-			err |= __put_user(f->head, &uf->head);
-			err |= __put_user(f->track, &uf->track);
-			err |= __put_user(f->stretch, &uf->stretch);
-			err |= __put_user(f->gap, &uf->gap);
-			err |= __put_user(f->rate, &uf->rate);
-			err |= __put_user(f->spec1, &uf->spec1);
-			err |= __put_user(f->fmt_gap, &uf->fmt_gap);
-			err |= __put_user((u64)f->name, (compat_caddr_t __user *)&uf->name);
-			break;
-		}
-		case FDGETDRVPRM32:
-		{
-			struct floppy_drive_params32 __user *uf;
-			struct floppy_drive_params *f = karg;
-
-			uf = compat_ptr(arg);
-			err = __put_user(f->cmos, &uf->cmos);
-			err |= __put_user(f->max_dtr, &uf->max_dtr);
-			err |= __put_user(f->hlt, &uf->hlt);
-			err |= __put_user(f->hut, &uf->hut);
-			err |= __put_user(f->srt, &uf->srt);
-			err |= __put_user(f->spinup, &uf->spinup);
-			err |= __put_user(f->spindown, &uf->spindown);
-			err |= __put_user(f->spindown_offset, &uf->spindown_offset);
-			err |= __put_user(f->select_delay, &uf->select_delay);
-			err |= __put_user(f->rps, &uf->rps);
-			err |= __put_user(f->tracks, &uf->tracks);
-			err |= __put_user(f->timeout, &uf->timeout);
-			err |= __put_user(f->interleave_sect, &uf->interleave_sect);
-			err |= __copy_to_user(&uf->max_errors, &f->max_errors, sizeof(f->max_errors));
-			err |= __put_user(f->flags, &uf->flags);
-			err |= __put_user(f->read_track, &uf->read_track);
-			err |= __copy_to_user(uf->autodetect, f->autodetect, sizeof(f->autodetect));
-			err |= __put_user(f->checkfreq, &uf->checkfreq);
-			err |= __put_user(f->native_format, &uf->native_format);
-			break;
-		}
-		case FDGETDRVSTAT32:
-		case FDPOLLDRVSTAT32:
-		{
-			struct floppy_drive_struct32 __user *uf;
-			struct floppy_drive_struct *f = karg;
-
-			uf = compat_ptr(arg);
-			err = __put_user(f->flags, &uf->flags);
-			err |= __put_user(f->spinup_date, &uf->spinup_date);
-			err |= __put_user(f->select_date, &uf->select_date);
-			err |= __put_user(f->first_read_date, &uf->first_read_date);
-			err |= __put_user(f->probed_format, &uf->probed_format);
-			err |= __put_user(f->track, &uf->track);
-			err |= __put_user(f->maxblock, &uf->maxblock);
-			err |= __put_user(f->maxtrack, &uf->maxtrack);
-			err |= __put_user(f->generation, &uf->generation);
-			err |= __put_user(f->keep_data, &uf->keep_data);
-			err |= __put_user(f->fd_ref, &uf->fd_ref);
-			err |= __put_user(f->fd_device, &uf->fd_device);
-			err |= __put_user(f->last_checked, &uf->last_checked);
-			err |= __put_user((u64)f->dmabuf, &uf->dmabuf);
-			err |= __put_user((u64)f->bufblocks, &uf->bufblocks);
-			break;
-		}
-		case FDGETFDCSTAT32:
-		{
-			struct floppy_fdc_state32 __user *uf;
-			struct floppy_fdc_state *f = karg;
-
-			uf = compat_ptr(arg);
-			err = __put_user(f->spec1, &uf->spec1);
-			err |= __put_user(f->spec2, &uf->spec2);
-			err |= __put_user(f->dtr, &uf->dtr);
-			err |= __put_user(f->version, &uf->version);
-			err |= __put_user(f->dor, &uf->dor);
-			err |= __put_user(f->address, &uf->address);
-			err |= __copy_to_user((char __user *)&uf->address + sizeof(uf->address),
-					   (char *)&f->address + sizeof(f->address), sizeof(int));
-			err |= __put_user(f->driver_version, &uf->driver_version);
-			err |= __copy_to_user(uf->track, f->track, sizeof(f->track));
-			break;
-		}
-		case FDWERRORGET32:
-		{
-			struct floppy_write_errors32 __user *uf;
-			struct floppy_write_errors *f = karg;
-
-			uf = compat_ptr(arg);
-			err = __put_user(f->write_errors, &uf->write_errors);
-			err |= __put_user(f->first_error_sector, &uf->first_error_sector);
-			err |= __put_user(f->first_error_generation, &uf->first_error_generation);
-			err |= __put_user(f->last_error_sector, &uf->last_error_sector);
-			err |= __put_user(f->last_error_generation, &uf->last_error_generation);
-			err |= __put_user(f->badness, &uf->badness);
-			break;
-		}
-		default:
-			break;
-	}
-	if (err)
-		err = -EFAULT;
-
-out:
-	kfree(karg);
-	return err;
-}
-#endif
-
 struct mtd_oob_buf32 {
 	u_int32_t start;
 	u_int32_t length;
@@ -2506,60 +1965,6 @@ COMPATIBLE_IOCTL(FIONREAD)  /* This is also TIOCINQ */
 /* 0x00 */
 COMPATIBLE_IOCTL(FIBMAP)
 COMPATIBLE_IOCTL(FIGETBSZ)
-/* 0x03 -- HD/IDE ioctl's used by hdparm and friends.
- *         Some need translations, these do not.
- */
-COMPATIBLE_IOCTL(HDIO_GET_IDENTITY)
-COMPATIBLE_IOCTL(HDIO_DRIVE_TASK)
-COMPATIBLE_IOCTL(HDIO_DRIVE_CMD)
-ULONG_IOCTL(HDIO_SET_MULTCOUNT)
-ULONG_IOCTL(HDIO_SET_UNMASKINTR)
-ULONG_IOCTL(HDIO_SET_KEEPSETTINGS)
-ULONG_IOCTL(HDIO_SET_32BIT)
-ULONG_IOCTL(HDIO_SET_NOWERR)
-ULONG_IOCTL(HDIO_SET_DMA)
-ULONG_IOCTL(HDIO_SET_PIO_MODE)
-ULONG_IOCTL(HDIO_SET_NICE)
-ULONG_IOCTL(HDIO_SET_WCACHE)
-ULONG_IOCTL(HDIO_SET_ACOUSTIC)
-ULONG_IOCTL(HDIO_SET_BUSSTATE)
-ULONG_IOCTL(HDIO_SET_ADDRESS)
-COMPATIBLE_IOCTL(HDIO_SCAN_HWIF)
-/* 0x330 is reserved -- it used to be HDIO_GETGEO_BIG */
-COMPATIBLE_IOCTL(0x330)
-/* 0x02 -- Floppy ioctls */
-COMPATIBLE_IOCTL(FDMSGON)
-COMPATIBLE_IOCTL(FDMSGOFF)
-COMPATIBLE_IOCTL(FDSETEMSGTRESH)
-COMPATIBLE_IOCTL(FDFLUSH)
-COMPATIBLE_IOCTL(FDWERRORCLR)
-COMPATIBLE_IOCTL(FDSETMAXERRS)
-COMPATIBLE_IOCTL(FDGETMAXERRS)
-COMPATIBLE_IOCTL(FDGETDRVTYP)
-COMPATIBLE_IOCTL(FDEJECT)
-COMPATIBLE_IOCTL(FDCLRPRM)
-COMPATIBLE_IOCTL(FDFMTBEG)
-COMPATIBLE_IOCTL(FDFMTEND)
-COMPATIBLE_IOCTL(FDRESET)
-COMPATIBLE_IOCTL(FDTWADDLE)
-COMPATIBLE_IOCTL(FDFMTTRK)
-COMPATIBLE_IOCTL(FDRAWCMD)
-/* 0x12 */
-#ifdef CONFIG_BLOCK
-COMPATIBLE_IOCTL(BLKRASET)
-COMPATIBLE_IOCTL(BLKROSET)
-COMPATIBLE_IOCTL(BLKROGET)
-COMPATIBLE_IOCTL(BLKRRPART)
-COMPATIBLE_IOCTL(BLKFLSBUF)
-COMPATIBLE_IOCTL(BLKSECTSET)
-COMPATIBLE_IOCTL(BLKSSZGET)
-COMPATIBLE_IOCTL(BLKTRACESTART)
-COMPATIBLE_IOCTL(BLKTRACESTOP)
-COMPATIBLE_IOCTL(BLKTRACESETUP)
-COMPATIBLE_IOCTL(BLKTRACETEARDOWN)
-ULONG_IOCTL(BLKRASET)
-ULONG_IOCTL(BLKFRASET)
-#endif
 /* RAID */
 COMPATIBLE_IOCTL(RAID_VERSION)
 COMPATIBLE_IOCTL(GET_ARRAY_INFO)
@@ -2807,50 +2212,6 @@ COMPATIBLE_IOCTL(PPGETMODE)
 COMPATIBLE_IOCTL(PPGETPHASE)
 COMPATIBLE_IOCTL(PPGETFLAGS)
 COMPATIBLE_IOCTL(PPSETFLAGS)
-/* CDROM stuff */
-COMPATIBLE_IOCTL(CDROMPAUSE)
-COMPATIBLE_IOCTL(CDROMRESUME)
-COMPATIBLE_IOCTL(CDROMPLAYMSF)
-COMPATIBLE_IOCTL(CDROMPLAYTRKIND)
-COMPATIBLE_IOCTL(CDROMREADTOCHDR)
-COMPATIBLE_IOCTL(CDROMREADTOCENTRY)
-COMPATIBLE_IOCTL(CDROMSTOP)
-COMPATIBLE_IOCTL(CDROMSTART)
-COMPATIBLE_IOCTL(CDROMEJECT)
-COMPATIBLE_IOCTL(CDROMVOLCTRL)
-COMPATIBLE_IOCTL(CDROMSUBCHNL)
-ULONG_IOCTL(CDROMEJECT_SW)
-COMPATIBLE_IOCTL(CDROMMULTISESSION)
-COMPATIBLE_IOCTL(CDROM_GET_MCN)
-COMPATIBLE_IOCTL(CDROMRESET)
-COMPATIBLE_IOCTL(CDROMVOLREAD)
-COMPATIBLE_IOCTL(CDROMSEEK)
-COMPATIBLE_IOCTL(CDROMPLAYBLK)
-COMPATIBLE_IOCTL(CDROMCLOSETRAY)
-ULONG_IOCTL(CDROM_SET_OPTIONS)
-ULONG_IOCTL(CDROM_CLEAR_OPTIONS)
-ULONG_IOCTL(CDROM_SELECT_SPEED)
-ULONG_IOCTL(CDROM_SELECT_DISC)
-ULONG_IOCTL(CDROM_MEDIA_CHANGED)
-ULONG_IOCTL(CDROM_DRIVE_STATUS)
-COMPATIBLE_IOCTL(CDROM_DISC_STATUS)
-COMPATIBLE_IOCTL(CDROM_CHANGER_NSLOTS)
-ULONG_IOCTL(CDROM_LOCKDOOR)
-ULONG_IOCTL(CDROM_DEBUG)
-COMPATIBLE_IOCTL(CDROM_GET_CAPABILITY)
-/* Ignore cdrom.h about these next 5 ioctls, they absolutely do
- * not take a struct cdrom_read, instead they take a struct cdrom_msf
- * which is compatible.
- */
-COMPATIBLE_IOCTL(CDROMREADMODE2)
-COMPATIBLE_IOCTL(CDROMREADMODE1)
-COMPATIBLE_IOCTL(CDROMREADRAW)
-COMPATIBLE_IOCTL(CDROMREADCOOKED)
-COMPATIBLE_IOCTL(CDROMREADALL)
-/* DVD ioctls */
-COMPATIBLE_IOCTL(DVD_READ_STRUCT)
-COMPATIBLE_IOCTL(DVD_WRITE_STRUCT)
-COMPATIBLE_IOCTL(DVD_AUTH)
 /* pktcdvd */
 COMPATIBLE_IOCTL(PACKET_CTRL_CMD)
 /* Big A */
@@ -3336,33 +2697,6 @@ HANDLE_IOCTL(SIOCGSTAMP, do_siocgstamp)
 HANDLE_IOCTL(SIOCGSTAMPNS, do_siocgstampns)
 #endif
 #ifdef CONFIG_BLOCK
-HANDLE_IOCTL(HDIO_GETGEO, hdio_getgeo)
-HANDLE_IOCTL(BLKRAGET, w_long)
-HANDLE_IOCTL(BLKGETSIZE, w_long)
-HANDLE_IOCTL(0x1260, broken_blkgetsize)
-HANDLE_IOCTL(BLKFRAGET, w_long)
-HANDLE_IOCTL(BLKSECTGET, w_long)
-HANDLE_IOCTL(BLKPG, blkpg_ioctl_trans)
-HANDLE_IOCTL(HDIO_GET_UNMASKINTR, hdio_ioctl_trans)
-HANDLE_IOCTL(HDIO_GET_MULTCOUNT, hdio_ioctl_trans)
-HANDLE_IOCTL(HDIO_GET_KEEPSETTINGS, hdio_ioctl_trans)
-HANDLE_IOCTL(HDIO_GET_32BIT, hdio_ioctl_trans)
-HANDLE_IOCTL(HDIO_GET_NOWERR, hdio_ioctl_trans)
-HANDLE_IOCTL(HDIO_GET_DMA, hdio_ioctl_trans)
-HANDLE_IOCTL(HDIO_GET_NICE, hdio_ioctl_trans)
-HANDLE_IOCTL(HDIO_GET_WCACHE, hdio_ioctl_trans)
-HANDLE_IOCTL(HDIO_GET_ACOUSTIC, hdio_ioctl_trans)
-HANDLE_IOCTL(HDIO_GET_ADDRESS, hdio_ioctl_trans)
-HANDLE_IOCTL(HDIO_GET_BUSSTATE, hdio_ioctl_trans)
-HANDLE_IOCTL(FDSETPRM32, fd_ioctl_trans)
-HANDLE_IOCTL(FDDEFPRM32, fd_ioctl_trans)
-HANDLE_IOCTL(FDGETPRM32, fd_ioctl_trans)
-HANDLE_IOCTL(FDSETDRVPRM32, fd_ioctl_trans)
-HANDLE_IOCTL(FDGETDRVPRM32, fd_ioctl_trans)
-HANDLE_IOCTL(FDGETDRVSTAT32, fd_ioctl_trans)
-HANDLE_IOCTL(FDPOLLDRVSTAT32, fd_ioctl_trans)
-HANDLE_IOCTL(FDGETFDCSTAT32, fd_ioctl_trans)
-HANDLE_IOCTL(FDWERRORGET32, fd_ioctl_trans)
 HANDLE_IOCTL(SG_IO,sg_ioctl_trans)
 HANDLE_IOCTL(SG_GET_REQUEST_TABLE, sg_grt_trans)
 #endif
@@ -3373,8 +2707,6 @@ HANDLE_IOCTL(PPPIOCSACTIVE32, ppp_sock_fprog_ioctl_trans)
 #ifdef CONFIG_BLOCK
 HANDLE_IOCTL(MTIOCGET32, mt_ioctl_trans)
 HANDLE_IOCTL(MTIOCPOS32, mt_ioctl_trans)
-HANDLE_IOCTL(CDROMREADAUDIO, cdrom_ioctl_trans)
-HANDLE_IOCTL(CDROM_SEND_PACKET, cdrom_ioctl_trans)
 #endif
 #define AUTOFS_IOC_SETTIMEOUT32 _IOWR(0x93,0x64,unsigned int)
 HANDLE_IOCTL(AUTOFS_IOC_SETTIMEOUT32, ioc_settimeout)
@@ -3415,9 +2747,6 @@ HANDLE_IOCTL(SONET_GETFRAMING, do_atm_ioctl)
 HANDLE_IOCTL(SONET_GETFRSENSE, do_atm_ioctl)
 /* block stuff */
 #ifdef CONFIG_BLOCK
-HANDLE_IOCTL(BLKBSZGET_32, do_blkbszget)
-HANDLE_IOCTL(BLKBSZSET_32, do_blkbszset)
-HANDLE_IOCTL(BLKGETSIZE64_32, do_blkgetsize64)
 /* Raw devices */
 HANDLE_IOCTL(RAW_SETBIND, raw_ioctl)
 HANDLE_IOCTL(RAW_GETBIND, raw_ioctl)

fs/direct-io.c

@@ -264,15 +264,12 @@ static int dio_bio_complete(struct dio *dio, struct bio *bio);
 /*
  * Asynchronous IO callback. 
  */
-static int dio_bio_end_aio(struct bio *bio, unsigned int bytes_done, int error)
+static void dio_bio_end_aio(struct bio *bio, int error)
 {
 	struct dio *dio = bio->bi_private;
 	unsigned long remaining;
 	unsigned long flags;
 
-	if (bio->bi_size)
-		return 1;
-
 	/* cleanup the bio */
 	dio_bio_complete(dio, bio);
 
@@ -287,8 +284,6 @@ static int dio_bio_end_aio(struct bio *bio, unsigned int bytes_done, int error)
 		aio_complete(dio->iocb, ret, 0);
 		kfree(dio);
 	}
-
-	return 0;
 }
 
 /*
@@ -298,21 +293,17 @@ static int dio_bio_end_aio(struct bio *bio, unsigned int bytes_done, int error)
  * During I/O bi_private points at the dio.  After I/O, bi_private is used to
  * implement a singly-linked list of completed BIOs, at dio->bio_list.
  */
-static int dio_bio_end_io(struct bio *bio, unsigned int bytes_done, int error)
+static void dio_bio_end_io(struct bio *bio, int error)
 {
 	struct dio *dio = bio->bi_private;
 	unsigned long flags;
 
-	if (bio->bi_size)
-		return 1;
-
 	spin_lock_irqsave(&dio->bio_lock, flags);
 	bio->bi_private = dio->bio_list;
 	dio->bio_list = bio;
 	if (--dio->refcount == 1 && dio->waiter)
 		wake_up_process(dio->waiter);
 	spin_unlock_irqrestore(&dio->bio_lock, flags);
-	return 0;
 }
 
 static int

fs/fs-writeback.c

@@ -14,6 +14,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/spinlock.h>
 #include <linux/sched.h>
 #include <linux/fs.h>

fs/gfs2/super.c

@@ -160,11 +160,9 @@ int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb_host *sb, int silent)
 }
 
 
-static int end_bio_io_page(struct bio *bio, unsigned int bytes_done, int error)
+static void end_bio_io_page(struct bio *bio, int error)
 {
 	struct page *page = bio->bi_private;
-	if (bio->bi_size)
-		return 1;
 
 	if (!error)
 		SetPageUptodate(page);

fs/jfs/jfs_logmgr.c

@@ -2200,16 +2200,13 @@ static int lbmIOWait(struct lbuf * bp, int flag)
  *
  * executed at INTIODONE level
  */
-static int lbmIODone(struct bio *bio, unsigned int bytes_done, int error)
+static void lbmIODone(struct bio *bio, int error)
 {
 	struct lbuf *bp = bio->bi_private;
 	struct lbuf *nextbp, *tail;
 	struct jfs_log *log;
 	unsigned long flags;
 
-	if (bio->bi_size)
-		return 1;
-
 	/*
 	 * get back jfs buffer bound to the i/o buffer
 	 */

fs/jfs/jfs_metapage.c

@@ -280,14 +280,10 @@ static void last_read_complete(struct page *page)
 	unlock_page(page);
 }
 
-static int metapage_read_end_io(struct bio *bio, unsigned int bytes_done,
-				int err)
+static void metapage_read_end_io(struct bio *bio, int err)
 {
 	struct page *page = bio->bi_private;
 
-	if (bio->bi_size)
-		return 1;
-
 	if (!test_bit(BIO_UPTODATE, &bio->bi_flags)) {
 		printk(KERN_ERR "metapage_read_end_io: I/O error\n");
 		SetPageError(page);
@@ -341,16 +337,12 @@ static void last_write_complete(struct page *page)
 	end_page_writeback(page);
 }
 
-static int metapage_write_end_io(struct bio *bio, unsigned int bytes_done,
-				 int err)
+static void metapage_write_end_io(struct bio *bio, int err)
 {
 	struct page *page = bio->bi_private;
 
 	BUG_ON(!PagePrivate(page));
 
-	if (bio->bi_size)
-		return 1;
-
 	if (! test_bit(BIO_UPTODATE, &bio->bi_flags)) {
 		printk(KERN_ERR "metapage_write_end_io: I/O error\n");
 		SetPageError(page);

fs/mpage.c

@@ -39,14 +39,11 @@
  * status of that page is hard.  See end_buffer_async_read() for the details.
  * There is no point in duplicating all that complexity.
  */
-static int mpage_end_io_read(struct bio *bio, unsigned int bytes_done, int err)
+static void mpage_end_io_read(struct bio *bio, int err)
 {
 	const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
 	struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1;
 
-	if (bio->bi_size)
-		return 1;
-
 	do {
 		struct page *page = bvec->bv_page;
 
@@ -62,17 +59,13 @@ static int mpage_end_io_read(struct bio *bio, unsigned int bytes_done, int err)
 		unlock_page(page);
 	} while (bvec >= bio->bi_io_vec);
 	bio_put(bio);
-	return 0;
 }
 
-static int mpage_end_io_write(struct bio *bio, unsigned int bytes_done, int err)
+static void mpage_end_io_write(struct bio *bio, int err)
 {
 	const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
 	struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1;
 
-	if (bio->bi_size)
-		return 1;
-
 	do {
 		struct page *page = bvec->bv_page;
 
@@ -87,7 +80,6 @@ static int mpage_end_io_write(struct bio *bio, unsigned int bytes_done, int err)
 		end_page_writeback(page);
 	} while (bvec >= bio->bi_io_vec);
 	bio_put(bio);
-	return 0;
 }
 
 static struct bio *mpage_bio_submit(int rw, struct bio *bio)

fs/ocfs2/cluster/heartbeat.c

@@ -217,7 +217,6 @@ static void o2hb_wait_on_io(struct o2hb_region *reg,
 }
 
 static int o2hb_bio_end_io(struct bio *bio,
-			   unsigned int bytes_done,
 			   int error)
 {
 	struct o2hb_bio_wait_ctxt *wc = bio->bi_private;
@@ -227,9 +226,6 @@ static int o2hb_bio_end_io(struct bio *bio,
 		wc->wc_error = error;
 	}
 
-	if (bio->bi_size)
-		return 1;
-
 	o2hb_bio_wait_dec(wc, 1);
 	bio_put(bio);
 	return 0;

fs/xfs/linux-2.6/xfs_aops.c

@@ -326,14 +326,10 @@ xfs_iomap_valid(
 STATIC int
 xfs_end_bio(
 	struct bio		*bio,
-	unsigned int		bytes_done,
 	int			error)
 {
 	xfs_ioend_t		*ioend = bio->bi_private;
 
-	if (bio->bi_size)
-		return 1;
-
 	ASSERT(atomic_read(&bio->bi_cnt) >= 1);
 	ioend->io_error = test_bit(BIO_UPTODATE, &bio->bi_flags) ? 0 : error;
 

fs/xfs/linux-2.6/xfs_buf.c

@@ -1106,16 +1106,12 @@ _xfs_buf_ioend(
 STATIC int
 xfs_buf_bio_end_io(
 	struct bio		*bio,
-	unsigned int		bytes_done,
 	int			error)
 {
 	xfs_buf_t		*bp = (xfs_buf_t *)bio->bi_private;
 	unsigned int		blocksize = bp->b_target->bt_bsize;
 	struct bio_vec		*bvec = bio->bi_io_vec + bio->bi_vcnt - 1;
 
-	if (bio->bi_size)
-		return 1;
-
 	if (!test_bit(BIO_UPTODATE, &bio->bi_flags))
 		bp->b_error = EIO;
 

include/linux/bio.h

@@ -64,7 +64,7 @@ struct bio_vec {
 
 struct bio_set;
 struct bio;
-typedef int (bio_end_io_t) (struct bio *, unsigned int, int);
+typedef void (bio_end_io_t) (struct bio *, int);
 typedef void (bio_destructor_t) (struct bio *);
 
 /*
@@ -226,7 +226,7 @@ struct bio {
 #define BIO_SEG_BOUNDARY(q, b1, b2) \
 	BIOVEC_SEG_BOUNDARY((q), __BVEC_END((b1)), __BVEC_START((b2)))
 
-#define bio_io_error(bio, bytes) bio_endio((bio), (bytes), -EIO)
+#define bio_io_error(bio) bio_endio((bio), -EIO)
 
 /*
  * drivers should not use the __ version unless they _really_ want to
@@ -286,7 +286,7 @@ extern struct bio *bio_alloc_bioset(gfp_t, int, struct bio_set *);
 extern void bio_put(struct bio *);
 extern void bio_free(struct bio *, struct bio_set *);
 
-extern void bio_endio(struct bio *, unsigned int, int);
+extern void bio_endio(struct bio *, int);
 struct request_queue;
 extern int bio_phys_segments(struct request_queue *, struct bio *);
 extern int bio_hw_segments(struct request_queue *, struct bio *);

include/linux/blkdev.h

@@ -1,6 +1,8 @@
 #ifndef _LINUX_BLKDEV_H
 #define _LINUX_BLKDEV_H
 
+#ifdef CONFIG_BLOCK
+
 #include <linux/sched.h>
 #include <linux/major.h>
 #include <linux/genhd.h>
@@ -32,8 +34,6 @@
 )
 #endif
 
-#ifdef CONFIG_BLOCK
-
 struct scsi_ioctl_command;
 
 struct request_queue;
@@ -471,7 +471,6 @@ struct request_queue
 	int			orderr, ordcolor;
 	struct request		pre_flush_rq, bar_rq, post_flush_rq;
 	struct request		*orig_bar_rq;
-	unsigned int		bi_size;
 
 	struct mutex		sysfs_lock;
 
@@ -637,10 +636,23 @@ static inline void blk_queue_bounce(struct request_queue *q, struct bio **bio)
 }
 #endif /* CONFIG_MMU */
 
-#define rq_for_each_bio(_bio, rq)	\
+struct req_iterator {
+	int i;
+	struct bio *bio;
+};
+
+/* This should not be used directly - use rq_for_each_segment */
+#define __rq_for_each_bio(_bio, rq)	\
 	if ((rq->bio))			\
 		for (_bio = (rq)->bio; _bio; _bio = _bio->bi_next)
 
+#define rq_for_each_segment(bvl, _rq, _iter)			\
+	__rq_for_each_bio(_iter.bio, _rq)			\
+		bio_for_each_segment(bvl, _iter.bio, _iter.i)
+
+#define rq_iter_last(rq, _iter)					\
+		(_iter.bio->bi_next == NULL && _iter.i == _iter.bio->bi_vcnt-1)
+
 extern int blk_register_queue(struct gendisk *disk);
 extern void blk_unregister_queue(struct gendisk *disk);
 extern void register_disk(struct gendisk *dev);
@@ -662,8 +674,8 @@ extern int sg_scsi_ioctl(struct file *, struct request_queue *,
 /*
  * Temporary export, until SCSI gets fixed up.
  */
-extern int ll_back_merge_fn(struct request_queue *, struct request *,
-		struct bio *);
+extern int blk_rq_append_bio(struct request_queue *q, struct request *rq,
+			     struct bio *bio);
 
 /*
  * A queue has just exitted congestion.  Note this in the global counter of
@@ -810,7 +822,6 @@ static inline struct request *blk_map_queue_find_tag(struct blk_queue_tag *bqt,
 	return bqt->tag_index[tag];
 }
 
-extern void blk_rq_bio_prep(struct request_queue *, struct request *, struct bio *);
 extern int blkdev_issue_flush(struct block_device *, sector_t *);
 
 #define MAX_PHYS_SEGMENTS 128

include/linux/blktrace_api.h

@@ -142,10 +142,14 @@ struct blk_user_trace_setup {
 	u32 pid;
 };
 
+#ifdef __KERNEL__
 #if defined(CONFIG_BLK_DEV_IO_TRACE)
 extern int blk_trace_ioctl(struct block_device *, unsigned, char __user *);
 extern void blk_trace_shutdown(struct request_queue *);
 extern void __blk_add_trace(struct blk_trace *, sector_t, int, int, u32, int, int, void *);
+extern int do_blk_trace_setup(struct request_queue *q,
+	struct block_device *bdev, struct blk_user_trace_setup *buts);
+
 
 /**
  * blk_add_trace_rq - Add a trace for a request oriented action
@@ -286,6 +290,12 @@ static inline void blk_add_trace_remap(struct request_queue *q, struct bio *bio,
 #define blk_add_trace_generic(q, rq, rw, what)	do { } while (0)
 #define blk_add_trace_pdu_int(q, what, bio, pdu)	do { } while (0)
 #define blk_add_trace_remap(q, bio, dev, f, t)	do {} while (0)
+static inline int do_blk_trace_setup(struct request_queue *q,
+				     struct block_device *bdev,
+				     struct blk_user_trace_setup *buts)
+{
+	return 0;
+}
 #endif /* CONFIG_BLK_DEV_IO_TRACE */
-
+#endif /* __KERNEL__ */
 #endif

include/linux/pci_ids.h

@@ -1738,6 +1738,11 @@
 
 #define PCI_VENDOR_ID_RADISYS		0x1331
 
+#define PCI_VENDOR_ID_MICRO_MEMORY		0x1332
+#define PCI_DEVICE_ID_MICRO_MEMORY_5415CN	0x5415
+#define PCI_DEVICE_ID_MICRO_MEMORY_5425CN	0x5425
+#define PCI_DEVICE_ID_MICRO_MEMORY_6155		0x6155
+
 #define PCI_VENDOR_ID_DOMEX		0x134a
 #define PCI_DEVICE_ID_DOMEX_DMX3191D	0x0001
 

include/linux/swap.h

@@ -221,7 +221,7 @@ extern void swap_unplug_io_fn(struct backing_dev_info *, struct page *);
 /* linux/mm/page_io.c */
 extern int swap_readpage(struct file *, struct page *);
 extern int swap_writepage(struct page *page, struct writeback_control *wbc);
-extern int end_swap_bio_read(struct bio *bio, unsigned int bytes_done, int err);
+extern void end_swap_bio_read(struct bio *bio, int err);
 
 /* linux/mm/swap_state.c */
 extern struct address_space swapper_space;

include/linux/writeback.h

@@ -5,6 +5,7 @@
 #define WRITEBACK_H
 
 #include <linux/sched.h>
+#include <linux/fs.h>
 
 struct backing_dev_info;
 

kernel/sched.c

@@ -61,6 +61,7 @@
 #include <linux/delayacct.h>
 #include <linux/reciprocal_div.h>
 #include <linux/unistd.h>
+#include <linux/pagemap.h>
 
 #include <asm/tlb.h>
 

mm/bounce.c

@@ -140,26 +140,19 @@ static void bounce_end_io(struct bio *bio, mempool_t *pool, int err)
 		mempool_free(bvec->bv_page, pool);
 	}
 
-	bio_endio(bio_orig, bio_orig->bi_size, err);
+	bio_endio(bio_orig, err);
 	bio_put(bio);
 }
 
-static int bounce_end_io_write(struct bio *bio, unsigned int bytes_done, int err)
+static void bounce_end_io_write(struct bio *bio, int err)
 {
-	if (bio->bi_size)
-		return 1;
-
 	bounce_end_io(bio, page_pool, err);
-	return 0;
 }
 
-static int bounce_end_io_write_isa(struct bio *bio, unsigned int bytes_done, int err)
+static void bounce_end_io_write_isa(struct bio *bio, int err)
 {
-	if (bio->bi_size)
-		return 1;
 
 	bounce_end_io(bio, isa_page_pool, err);
-	return 0;
 }
 
 static void __bounce_end_io_read(struct bio *bio, mempool_t *pool, int err)
@@ -172,22 +165,14 @@ static void __bounce_end_io_read(struct bio *bio, mempool_t *pool, int err)
 	bounce_end_io(bio, pool, err);
 }
 
-static int bounce_end_io_read(struct bio *bio, unsigned int bytes_done, int err)
+static void bounce_end_io_read(struct bio *bio, int err)
 {
-	if (bio->bi_size)
-		return 1;
-
 	__bounce_end_io_read(bio, page_pool, err);
-	return 0;
 }
 
-static int bounce_end_io_read_isa(struct bio *bio, unsigned int bytes_done, int err)
+static void bounce_end_io_read_isa(struct bio *bio, int err)
 {
-	if (bio->bi_size)
-		return 1;
-
 	__bounce_end_io_read(bio, isa_page_pool, err);
-	return 0;
 }
 
 static void __blk_queue_bounce(struct request_queue *q, struct bio **bio_orig,

mm/page_io.c

@@ -44,14 +44,11 @@ static struct bio *get_swap_bio(gfp_t gfp_flags, pgoff_t index,
 	return bio;
 }
 
-static int end_swap_bio_write(struct bio *bio, unsigned int bytes_done, int err)
+static void end_swap_bio_write(struct bio *bio, int err)
 {
 	const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
 	struct page *page = bio->bi_io_vec[0].bv_page;
 
-	if (bio->bi_size)
-		return 1;
-
 	if (!uptodate) {
 		SetPageError(page);
 		/*
@@ -71,17 +68,13 @@ static int end_swap_bio_write(struct bio *bio, unsigned int bytes_done, int err)
 	}
 	end_page_writeback(page);
 	bio_put(bio);
-	return 0;
 }
 
-int end_swap_bio_read(struct bio *bio, unsigned int bytes_done, int err)
+void end_swap_bio_read(struct bio *bio, int err)
 {
 	const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
 	struct page *page = bio->bi_io_vec[0].bv_page;
 
-	if (bio->bi_size)
-		return 1;
-
 	if (!uptodate) {
 		SetPageError(page);
 		ClearPageUptodate(page);
@@ -94,7 +87,6 @@ int end_swap_bio_read(struct bio *bio, unsigned int bytes_done, int err)
 	}
 	unlock_page(page);
 	bio_put(bio);
-	return 0;
 }
 
 /*

mm/readahead.c

@@ -15,6 +15,7 @@
 #include <linux/backing-dev.h>
 #include <linux/task_io_accounting_ops.h>
 #include <linux/pagevec.h>
+#include <linux/pagemap.h>
 
 void default_unplug_io_fn(struct backing_dev_info *bdi, struct page *page)
 {