xfs_aops.h (8c57a5e7b2820f349c95b8c8393fec1e0f4070d2) xfs_aops.h (fa8d972d055c723cc427e14d4d7919640f418730)
1/*
2 * Copyright (c) 2005-2006 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *

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13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18#ifndef __XFS_AOPS_H__
19#define __XFS_AOPS_H__
20
1/*
2 * Copyright (c) 2005-2006 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *

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13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18#ifndef __XFS_AOPS_H__
19#define __XFS_AOPS_H__
20
21extern mempool_t *xfs_ioend_pool;
21extern struct bio_set *xfs_ioend_bioset;
22
23/*
24 * Types of I/O for bmap clustering and I/O completion tracking.
25 */
26enum {
27 XFS_IO_INVALID, /* initial state */
28 XFS_IO_DELALLOC, /* covers delalloc region */
29 XFS_IO_UNWRITTEN, /* covers allocated but uninitialized data */
30 XFS_IO_OVERWRITE, /* covers already allocated extent */
31};
32
33#define XFS_IO_TYPES \
34 { XFS_IO_INVALID, "invalid" }, \
35 { XFS_IO_DELALLOC, "delalloc" }, \
36 { XFS_IO_UNWRITTEN, "unwritten" }, \
37 { XFS_IO_OVERWRITE, "overwrite" }
38
39/*
22
23/*
24 * Types of I/O for bmap clustering and I/O completion tracking.
25 */
26enum {
27 XFS_IO_INVALID, /* initial state */
28 XFS_IO_DELALLOC, /* covers delalloc region */
29 XFS_IO_UNWRITTEN, /* covers allocated but uninitialized data */
30 XFS_IO_OVERWRITE, /* covers already allocated extent */
31};
32
33#define XFS_IO_TYPES \
34 { XFS_IO_INVALID, "invalid" }, \
35 { XFS_IO_DELALLOC, "delalloc" }, \
36 { XFS_IO_UNWRITTEN, "unwritten" }, \
37 { XFS_IO_OVERWRITE, "overwrite" }
38
39/*
40 * xfs_ioend struct manages large extent writes for XFS.
41 * It can manage several multi-page bio's at once.
40 * Structure for buffered I/O completions.
42 */
41 */
43typedef struct xfs_ioend {
42struct xfs_ioend {
44 struct list_head io_list; /* next ioend in chain */
45 unsigned int io_type; /* delalloc / unwritten */
43 struct list_head io_list; /* next ioend in chain */
44 unsigned int io_type; /* delalloc / unwritten */
46 int io_error; /* I/O error code */
47 atomic_t io_remaining; /* hold count */
48 struct inode *io_inode; /* file being written to */
45 struct inode *io_inode; /* file being written to */
49 struct buffer_head *io_buffer_head;/* buffer linked list head */
50 struct buffer_head *io_buffer_tail;/* buffer linked list tail */
51 size_t io_size; /* size of the extent */
52 xfs_off_t io_offset; /* offset in the file */
53 struct work_struct io_work; /* xfsdatad work queue */
54 struct xfs_trans *io_append_trans;/* xact. for size update */
46 size_t io_size; /* size of the extent */
47 xfs_off_t io_offset; /* offset in the file */
48 struct work_struct io_work; /* xfsdatad work queue */
49 struct xfs_trans *io_append_trans;/* xact. for size update */
55} xfs_ioend_t;
50 struct bio *io_bio; /* bio being built */
51 struct bio io_inline_bio; /* MUST BE LAST! */
52};
56
57extern const struct address_space_operations xfs_address_space_operations;
58
59int xfs_get_blocks(struct inode *inode, sector_t offset,
60 struct buffer_head *map_bh, int create);
61int xfs_get_blocks_direct(struct inode *inode, sector_t offset,
62 struct buffer_head *map_bh, int create);
63int xfs_get_blocks_dax_fault(struct inode *inode, sector_t offset,
64 struct buffer_head *map_bh, int create);
65
53
54extern const struct address_space_operations xfs_address_space_operations;
55
56int xfs_get_blocks(struct inode *inode, sector_t offset,
57 struct buffer_head *map_bh, int create);
58int xfs_get_blocks_direct(struct inode *inode, sector_t offset,
59 struct buffer_head *map_bh, int create);
60int xfs_get_blocks_dax_fault(struct inode *inode, sector_t offset,
61 struct buffer_head *map_bh, int create);
62
63int xfs_end_io_direct_write(struct kiocb *iocb, loff_t offset,
64 ssize_t size, void *private);
65
66extern void xfs_count_page_state(struct page *, int *, int *);
67extern struct block_device *xfs_find_bdev_for_inode(struct inode *);
68
69#endif /* __XFS_AOPS_H__ */
66extern void xfs_count_page_state(struct page *, int *, int *);
67extern struct block_device *xfs_find_bdev_for_inode(struct inode *);
68
69#endif /* __XFS_AOPS_H__ */