4667a0ec32
This patch adds writeback_control to writing back the AIL list. This means that we can then take advantage of the information we get in ->write_inode() in order to set off some pre-emptive writeback. In addition, the AIL code is cleaned up a bit to make it a bit simpler to understand. There is still more which can usefully be done in this area, but this is a good start at least. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
/*
|
|
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
|
|
* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
|
* of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#ifndef __LOG_DOT_H__
|
|
#define __LOG_DOT_H__
|
|
|
|
#include <linux/list.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/writeback.h>
|
|
#include "incore.h"
|
|
|
|
/**
|
|
* gfs2_log_lock - acquire the right to mess with the log manager
|
|
* @sdp: the filesystem
|
|
*
|
|
*/
|
|
|
|
static inline void gfs2_log_lock(struct gfs2_sbd *sdp)
|
|
__acquires(&sdp->sd_log_lock)
|
|
{
|
|
spin_lock(&sdp->sd_log_lock);
|
|
}
|
|
|
|
/**
|
|
* gfs2_log_unlock - release the right to mess with the log manager
|
|
* @sdp: the filesystem
|
|
*
|
|
*/
|
|
|
|
static inline void gfs2_log_unlock(struct gfs2_sbd *sdp)
|
|
__releases(&sdp->sd_log_lock)
|
|
{
|
|
spin_unlock(&sdp->sd_log_lock);
|
|
}
|
|
|
|
static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp,
|
|
unsigned int value)
|
|
{
|
|
if (++value == sdp->sd_jdesc->jd_blocks) {
|
|
value = 0;
|
|
}
|
|
sdp->sd_log_head = sdp->sd_log_tail = value;
|
|
}
|
|
|
|
extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct,
|
|
unsigned int ssize);
|
|
|
|
extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks);
|
|
extern void gfs2_log_incr_head(struct gfs2_sbd *sdp);
|
|
|
|
extern struct buffer_head *gfs2_log_get_buf(struct gfs2_sbd *sdp);
|
|
extern struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp,
|
|
struct buffer_head *real);
|
|
extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl);
|
|
extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
|
|
extern void gfs2_remove_from_ail(struct gfs2_bufdata *bd);
|
|
extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc);
|
|
|
|
extern void gfs2_log_shutdown(struct gfs2_sbd *sdp);
|
|
extern void gfs2_meta_syncfs(struct gfs2_sbd *sdp);
|
|
extern int gfs2_logd(void *data);
|
|
|
|
#endif /* __LOG_DOT_H__ */
|