mirror of https://gitee.com/openkylin/linux.git
73 lines
2.6 KiB
C
73 lines
2.6 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 struct bio_set *xfs_ioend_bioset;
|
|
|
|
/*
|
|
* Types of I/O for bmap clustering and I/O completion tracking.
|
|
*/
|
|
enum {
|
|
XFS_IO_INVALID, /* initial state */
|
|
XFS_IO_DELALLOC, /* covers delalloc region */
|
|
XFS_IO_UNWRITTEN, /* covers allocated but uninitialized data */
|
|
XFS_IO_OVERWRITE, /* covers already allocated extent */
|
|
XFS_IO_COW, /* covers copy-on-write extent */
|
|
};
|
|
|
|
#define XFS_IO_TYPES \
|
|
{ XFS_IO_INVALID, "invalid" }, \
|
|
{ XFS_IO_DELALLOC, "delalloc" }, \
|
|
{ XFS_IO_UNWRITTEN, "unwritten" }, \
|
|
{ XFS_IO_OVERWRITE, "overwrite" }, \
|
|
{ XFS_IO_COW, "CoW" }
|
|
|
|
/*
|
|
* Structure for buffered I/O completions.
|
|
*/
|
|
struct xfs_ioend {
|
|
struct list_head io_list; /* next ioend in chain */
|
|
unsigned int io_type; /* delalloc / unwritten */
|
|
struct inode *io_inode; /* file being written to */
|
|
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 */
|
|
struct bio *io_bio; /* bio being built */
|
|
struct bio io_inline_bio; /* MUST BE LAST! */
|
|
};
|
|
|
|
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);
|
|
|
|
int xfs_end_io_direct_write(struct kiocb *iocb, loff_t offset,
|
|
ssize_t size, void *private);
|
|
int xfs_setfilesize(struct xfs_inode *ip, xfs_off_t offset, size_t size);
|
|
|
|
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__ */
|