covert fatfs to ->evict_inode()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/fat/inode.c

@@ -263,7 +263,7 @@ static const struct address_space_operations fat_aops = {
  *			check if the location is still valid and retry if it
  *			isn't. Otherwise we do changes.
  *		5. Spinlock is used to protect hash/unhash/location check/lookup
- *		6. fat_clear_inode() unhashes the F-d-c entry.
+ *		6. fat_evict_inode() unhashes the F-d-c entry.
  *		7. lookup() and readdir() do igrab() if they find a F-d-c entry
  *			and consider negative result as cache miss.
  */
@@ -448,16 +448,15 @@ out:
 
 EXPORT_SYMBOL_GPL(fat_build_inode);
 
-static void fat_delete_inode(struct inode *inode)
+static void fat_evict_inode(struct inode *inode)
 {
 	truncate_inode_pages(&inode->i_data, 0);
-	inode->i_size = 0;
-	fat_truncate_blocks(inode, 0);
-	clear_inode(inode);
-}
-
-static void fat_clear_inode(struct inode *inode)
-{
+	if (!inode->i_nlink) {
+		inode->i_size = 0;
+		fat_truncate_blocks(inode, 0);
+	}
+	invalidate_inode_buffers(inode);
+	end_writeback(inode);
 	fat_cache_inval_inode(inode);
 	fat_detach(inode);
 }
@@ -674,12 +673,11 @@ static const struct super_operations fat_sops = {
 	.alloc_inode	= fat_alloc_inode,
 	.destroy_inode	= fat_destroy_inode,
 	.write_inode	= fat_write_inode,
-	.delete_inode	= fat_delete_inode,
+	.evict_inode	= fat_evict_inode,
 	.put_super	= fat_put_super,
 	.write_super	= fat_write_super,
 	.sync_fs	= fat_sync_fs,
 	.statfs		= fat_statfs,
-	.clear_inode	= fat_clear_inode,
 	.remount_fs	= fat_remount,
 
 	.show_options	= fat_show_options,