mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-15 16:24:13 +08:00
bd5a876ac4
direct I/O locking changes it is just a wrapper around VOP_FLUSHINVAL_PAGES, so it's not nessecary anymore. Keep a simplified version for kernels < 2.4.22, as these don't have the changed direct I/O locking. SGI-PV: 938064 SGI-Modid: xfs-linux:xfs-kern:194420a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
115 lines
3.7 KiB
C
115 lines
3.7 KiB
C
/*
|
|
* Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of version 2 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.
|
|
*
|
|
* Further, this software is distributed without any warranty that it is
|
|
* free of the rightful claim of any third person regarding infringement
|
|
* or the like. Any license provided herein, whether implied or
|
|
* otherwise, applies only to this software file. Patent licenses, if
|
|
* any, provided herein do not apply to combinations of this program with
|
|
* other software, or any other product whatsoever.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write the Free Software Foundation, Inc., 59
|
|
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
|
|
*
|
|
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
|
|
* Mountain View, CA 94043, or:
|
|
*
|
|
* http://www.sgi.com
|
|
*
|
|
* For further information regarding this notice, see:
|
|
*
|
|
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
|
|
*/
|
|
#ifndef __XFS_LRW_H__
|
|
#define __XFS_LRW_H__
|
|
|
|
struct vnode;
|
|
struct bhv_desc;
|
|
struct xfs_mount;
|
|
struct xfs_iocore;
|
|
struct xfs_inode;
|
|
struct xfs_bmbt_irec;
|
|
struct xfs_buf;
|
|
struct xfs_iomap;
|
|
|
|
#if defined(XFS_RW_TRACE)
|
|
/*
|
|
* Defines for the trace mechanisms in xfs_lrw.c.
|
|
*/
|
|
#define XFS_RW_KTRACE_SIZE 128
|
|
|
|
#define XFS_READ_ENTER 1
|
|
#define XFS_WRITE_ENTER 2
|
|
#define XFS_IOMAP_READ_ENTER 3
|
|
#define XFS_IOMAP_WRITE_ENTER 4
|
|
#define XFS_IOMAP_READ_MAP 5
|
|
#define XFS_IOMAP_WRITE_MAP 6
|
|
#define XFS_IOMAP_WRITE_NOSPACE 7
|
|
#define XFS_ITRUNC_START 8
|
|
#define XFS_ITRUNC_FINISH1 9
|
|
#define XFS_ITRUNC_FINISH2 10
|
|
#define XFS_CTRUNC1 11
|
|
#define XFS_CTRUNC2 12
|
|
#define XFS_CTRUNC3 13
|
|
#define XFS_CTRUNC4 14
|
|
#define XFS_CTRUNC5 15
|
|
#define XFS_CTRUNC6 16
|
|
#define XFS_BUNMAPI 17
|
|
#define XFS_INVAL_CACHED 18
|
|
#define XFS_DIORD_ENTER 19
|
|
#define XFS_DIOWR_ENTER 20
|
|
#define XFS_SENDFILE_ENTER 21
|
|
#define XFS_WRITEPAGE_ENTER 22
|
|
#define XFS_RELEASEPAGE_ENTER 23
|
|
#define XFS_IOMAP_ALLOC_ENTER 24
|
|
#define XFS_IOMAP_ALLOC_MAP 25
|
|
#define XFS_IOMAP_UNWRITTEN 26
|
|
extern void xfs_rw_enter_trace(int, struct xfs_iocore *,
|
|
void *, size_t, loff_t, int);
|
|
extern void xfs_inval_cached_trace(struct xfs_iocore *,
|
|
xfs_off_t, xfs_off_t, xfs_off_t, xfs_off_t);
|
|
#else
|
|
#define xfs_rw_enter_trace(tag, io, data, size, offset, ioflags)
|
|
#define xfs_inval_cached_trace(io, offset, len, first, last)
|
|
#endif
|
|
|
|
/*
|
|
* Maximum count of bmaps used by read and write paths.
|
|
*/
|
|
#define XFS_MAX_RW_NBMAPS 4
|
|
|
|
extern int xfs_bmap(struct bhv_desc *, xfs_off_t, ssize_t, int,
|
|
struct xfs_iomap *, int *);
|
|
extern int xfsbdstrat(struct xfs_mount *, struct xfs_buf *);
|
|
extern int xfs_bdstrat_cb(struct xfs_buf *);
|
|
|
|
extern int xfs_zero_eof(struct vnode *, struct xfs_iocore *, xfs_off_t,
|
|
xfs_fsize_t, xfs_fsize_t);
|
|
extern ssize_t xfs_read(struct bhv_desc *, struct kiocb *,
|
|
const struct iovec *, unsigned int,
|
|
loff_t *, int, struct cred *);
|
|
extern ssize_t xfs_write(struct bhv_desc *, struct kiocb *,
|
|
const struct iovec *, unsigned int,
|
|
loff_t *, int, struct cred *);
|
|
extern ssize_t xfs_sendfile(struct bhv_desc *, struct file *,
|
|
loff_t *, int, size_t, read_actor_t,
|
|
void *, struct cred *);
|
|
|
|
extern int xfs_dev_is_read_only(struct xfs_mount *, char *);
|
|
|
|
#define XFS_FSB_TO_DB_IO(io,fsb) \
|
|
(((io)->io_flags & XFS_IOCORE_RT) ? \
|
|
XFS_FSB_TO_BB((io)->io_mount, (fsb)) : \
|
|
XFS_FSB_TO_DADDR((io)->io_mount, (fsb)))
|
|
|
|
#endif /* __XFS_LRW_H__ */
|