mirror of
https://github.com/torvalds/linux.git
synced 2024-12-05 10:32:35 +00:00
4a06fd262d
We now have an i_dio_count filed and surrounding infrastructure to wait for direct I/O completion instead of i_icount, and we have never needed to iocount waits for buffered I/O given that we only set the page uptodate after finishing all required work. Thus remove i_iocount, and replace the actually needed waits with calls to inode_dio_wait. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Alex Elder <aelder@sgi.com>
67 lines
2.3 KiB
C
67 lines
2.3 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 workqueue_struct *xfsdatad_workqueue;
|
|
extern struct workqueue_struct *xfsconvertd_workqueue;
|
|
extern mempool_t *xfs_ioend_pool;
|
|
|
|
/*
|
|
* Types of I/O for bmap clustering and I/O completion tracking.
|
|
*/
|
|
enum {
|
|
IO_DIRECT = 0, /* special case for direct I/O ioends */
|
|
IO_DELALLOC, /* mapping covers delalloc region */
|
|
IO_UNWRITTEN, /* mapping covers allocated but uninitialized data */
|
|
IO_OVERWRITE, /* mapping covers already allocated extent */
|
|
};
|
|
|
|
#define XFS_IO_TYPES \
|
|
{ 0, "" }, \
|
|
{ IO_DELALLOC, "delalloc" }, \
|
|
{ IO_UNWRITTEN, "unwritten" }, \
|
|
{ IO_OVERWRITE, "overwrite" }
|
|
|
|
/*
|
|
* xfs_ioend struct manages large extent writes for XFS.
|
|
* It can manage several multi-page bio's at once.
|
|
*/
|
|
typedef struct xfs_ioend {
|
|
struct xfs_ioend *io_list; /* next ioend in chain */
|
|
unsigned int io_type; /* delalloc / unwritten */
|
|
int io_error; /* I/O error code */
|
|
atomic_t io_remaining; /* hold count */
|
|
unsigned int io_isasync : 1; /* needs aio_complete */
|
|
struct inode *io_inode; /* file being written to */
|
|
struct buffer_head *io_buffer_head;/* buffer linked list head */
|
|
struct buffer_head *io_buffer_tail;/* buffer linked list tail */
|
|
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 kiocb *io_iocb;
|
|
int io_result;
|
|
} xfs_ioend_t;
|
|
|
|
extern const struct address_space_operations xfs_address_space_operations;
|
|
extern int xfs_get_blocks(struct inode *, sector_t, struct buffer_head *, int);
|
|
|
|
extern void xfs_count_page_state(struct page *, int *, int *);
|
|
|
|
#endif /* __XFS_AOPS_H__ */
|