54 строки
1.7 KiB
C
54 строки
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2005-2006 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*/
|
|
#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_HOLE, /* covers region without any block allocation */
|
|
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_HOLE, "hole" }, \
|
|
{ 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;
|
|
extern const struct address_space_operations xfs_dax_aops;
|
|
|
|
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 *);
|
|
extern struct dax_device *xfs_find_daxdev_for_inode(struct inode *);
|
|
|
|
#endif /* __XFS_AOPS_H__ */
|