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Christoph Hellwig65b3da32005-09-05 08:18:12 +10001/*
Nathan Scottad723872006-06-09 15:29:12 +10002 * Copyright (c) 2005-2006 Silicon Graphics, Inc.
Nathan Scott7b718762005-11-02 14:58:39 +11003 * All Rights Reserved.
Christoph Hellwig65b3da32005-09-05 08:18:12 +10004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Christoph Hellwig65b3da32005-09-05 08:18:12 +10007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
Christoph Hellwig65b3da32005-09-05 08:18:12 +100013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Christoph Hellwig65b3da32005-09-05 08:18:12 +100017 */
18#ifndef __XFS_AOPS_H__
19#define __XFS_AOPS_H__
20
Christoph Hellwig0e51a8e2016-04-06 08:34:30 +100021extern struct bio_set *xfs_ioend_bioset;
Christoph Hellwig65b3da32005-09-05 08:18:12 +100022
Christoph Hellwigf6d6d4f2006-01-11 15:40:13 +110023/*
Christoph Hellwiga206c812010-12-10 08:42:20 +000024 * Types of I/O for bmap clustering and I/O completion tracking.
25 */
26enum {
Dave Chinnerfbcc0252016-02-15 17:21:19 +110027 XFS_IO_INVALID, /* initial state */
Alain Renaud0d882a32012-05-22 15:56:21 -050028 XFS_IO_DELALLOC, /* covers delalloc region */
29 XFS_IO_UNWRITTEN, /* covers allocated but uninitialized data */
30 XFS_IO_OVERWRITE, /* covers already allocated extent */
Darrick J. Wongef473662016-10-03 09:11:34 -070031 XFS_IO_COW, /* covers copy-on-write extent */
Christoph Hellwiga206c812010-12-10 08:42:20 +000032};
33
34#define XFS_IO_TYPES \
Dave Chinnerfbcc0252016-02-15 17:21:19 +110035 { XFS_IO_INVALID, "invalid" }, \
Alain Renaud0d882a32012-05-22 15:56:21 -050036 { XFS_IO_DELALLOC, "delalloc" }, \
37 { XFS_IO_UNWRITTEN, "unwritten" }, \
Darrick J. Wongef473662016-10-03 09:11:34 -070038 { XFS_IO_OVERWRITE, "overwrite" }, \
39 { XFS_IO_COW, "CoW" }
Christoph Hellwiga206c812010-12-10 08:42:20 +000040
41/*
Christoph Hellwig0e51a8e2016-04-06 08:34:30 +100042 * Structure for buffered I/O completions.
Christoph Hellwigf6d6d4f2006-01-11 15:40:13 +110043 */
Christoph Hellwig0e51a8e2016-04-06 08:34:30 +100044struct xfs_ioend {
Dave Chinnere10de372016-02-15 17:23:12 +110045 struct list_head io_list; /* next ioend in chain */
Christoph Hellwigf6d6d4f2006-01-11 15:40:13 +110046 unsigned int io_type; /* delalloc / unwritten */
Christoph Hellwigb677c212007-08-29 11:46:28 +100047 struct inode *io_inode; /* file being written to */
Christoph Hellwig65b3da32005-09-05 08:18:12 +100048 size_t io_size; /* size of the extent */
49 xfs_off_t io_offset; /* offset in the file */
50 struct work_struct io_work; /* xfsdatad work queue */
Christoph Hellwig281627d2012-03-13 08:41:05 +000051 struct xfs_trans *io_append_trans;/* xact. for size update */
Dave Chinnerbb187822016-04-06 08:11:25 +100052 struct bio *io_bio; /* bio being built */
Christoph Hellwig0e51a8e2016-04-06 08:34:30 +100053 struct bio io_inline_bio; /* MUST BE LAST! */
54};
Christoph Hellwig65b3da32005-09-05 08:18:12 +100055
Christoph Hellwigf5e54d62006-06-28 04:26:44 -070056extern const struct address_space_operations xfs_address_space_operations;
Dave Chinner6b698ed2015-06-04 09:18:53 +100057
Christoph Hellwige3728432016-09-19 11:26:41 +100058int xfs_setfilesize(struct xfs_inode *ip, xfs_off_t offset, size_t size);
Christoph Hellwigfa8d9722016-07-20 11:38:01 +100059
Christoph Hellwig20cb52e2010-06-24 09:46:01 +100060extern void xfs_count_page_state(struct page *, int *, int *);
Ross Zwisler20a90f52016-02-26 15:19:52 -080061extern struct block_device *xfs_find_bdev_for_inode(struct inode *);
Christoph Hellwig0b1b2132009-12-14 23:14:59 +000062
Nathan Scottad723872006-06-09 15:29:12 +100063#endif /* __XFS_AOPS_H__ */