mirror of
https://github.com/torvalds/linux
synced 2024-09-22 03:55:39 +00:00
20a90f5899
dax_clear_blocks() needs a valid struct block_device and previously it was using inode->i_sb->s_bdev in all cases. This is correct for normal inodes on mounted ext2, ext4 and XFS filesystems, but is incorrect for DAX raw block devices and for XFS real-time devices. Instead, rename dax_clear_blocks() to dax_clear_sectors(), and change its arguments to take a bdev and a sector instead of an inode and a block. This better reflects what the function does, and it allows the filesystem and raw block device code to pass in an appropriate struct block_device. Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Suggested-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Dave Chinner <david@fromorbit.com> Cc: Jens Axboe <axboe@fb.com> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
68 lines
2.5 KiB
C
68 lines
2.5 KiB
C
/*
|
|
* Copyright (c) 2005-2006 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it would be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#ifndef __XFS_AOPS_H__
|
|
#define __XFS_AOPS_H__
|
|
|
|
extern mempool_t *xfs_ioend_pool;
|
|
|
|
/*
|
|
* Types of I/O for bmap clustering and I/O completion tracking.
|
|
*/
|
|
enum {
|
|
XFS_IO_DELALLOC, /* covers delalloc region */
|
|
XFS_IO_UNWRITTEN, /* covers allocated but uninitialized data */
|
|
XFS_IO_OVERWRITE, /* covers already allocated extent */
|
|
};
|
|
|
|
#define XFS_IO_TYPES \
|
|
{ XFS_IO_DELALLOC, "delalloc" }, \
|
|
{ XFS_IO_UNWRITTEN, "unwritten" }, \
|
|
{ XFS_IO_OVERWRITE, "overwrite" }
|
|
|
|
/*
|
|
* xfs_ioend struct manages large extent writes for XFS.
|
|
* It can manage several multi-page bio's at once.
|
|
*/
|
|
typedef struct xfs_ioend {
|
|
struct xfs_ioend *io_list; /* next ioend in chain */
|
|
unsigned int io_type; /* delalloc / unwritten */
|
|
int io_error; /* I/O error code */
|
|
atomic_t io_remaining; /* hold count */
|
|
struct inode *io_inode; /* file being written to */
|
|
struct buffer_head *io_buffer_head;/* buffer linked list head */
|
|
struct buffer_head *io_buffer_tail;/* buffer linked list tail */
|
|
size_t io_size; /* size of the extent */
|
|
xfs_off_t io_offset; /* offset in the file */
|
|
struct work_struct io_work; /* xfsdatad work queue */
|
|
struct xfs_trans *io_append_trans;/* xact. for size update */
|
|
} xfs_ioend_t;
|
|
|
|
extern const struct address_space_operations xfs_address_space_operations;
|
|
|
|
int xfs_get_blocks(struct inode *inode, sector_t offset,
|
|
struct buffer_head *map_bh, int create);
|
|
int xfs_get_blocks_direct(struct inode *inode, sector_t offset,
|
|
struct buffer_head *map_bh, int create);
|
|
int xfs_get_blocks_dax_fault(struct inode *inode, sector_t offset,
|
|
struct buffer_head *map_bh, int create);
|
|
|
|
extern void xfs_count_page_state(struct page *, int *, int *);
|
|
extern struct block_device *xfs_find_bdev_for_inode(struct inode *);
|
|
|
|
#endif /* __XFS_AOPS_H__ */
|