forked from luck/tmp_suning_uos_patched
6ecd7c2dd9
Workqueue can now handle high concurrency. Convert gfs to use workqueue instead of slow-work. * Steven pointed out that recovery path might be run from allocation path and thus requires forward progress guarantee without memory allocation. Create and use gfs_recovery_wq with rescuer. Please note that forward progress wasn't guaranteed with slow-work. * Updated to use non-reentrant workqueue. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Steven Whitehouse <swhiteho@redhat.com>
37 lines
1.2 KiB
C
37 lines
1.2 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 __RECOVERY_DOT_H__
|
|
#define __RECOVERY_DOT_H__
|
|
|
|
#include "incore.h"
|
|
|
|
extern struct workqueue_struct *gfs_recovery_wq;
|
|
|
|
static inline void gfs2_replay_incr_blk(struct gfs2_sbd *sdp, unsigned int *blk)
|
|
{
|
|
if (++*blk == sdp->sd_jdesc->jd_blocks)
|
|
*blk = 0;
|
|
}
|
|
|
|
extern int gfs2_replay_read_block(struct gfs2_jdesc *jd, unsigned int blk,
|
|
struct buffer_head **bh);
|
|
|
|
extern int gfs2_revoke_add(struct gfs2_sbd *sdp, u64 blkno, unsigned int where);
|
|
extern int gfs2_revoke_check(struct gfs2_sbd *sdp, u64 blkno, unsigned int where);
|
|
extern void gfs2_revoke_clean(struct gfs2_sbd *sdp);
|
|
|
|
extern int gfs2_find_jhead(struct gfs2_jdesc *jd,
|
|
struct gfs2_log_header_host *head);
|
|
extern int gfs2_recover_journal(struct gfs2_jdesc *gfs2_jd, bool wait);
|
|
extern void gfs2_recover_func(struct work_struct *work);
|
|
|
|
#endif /* __RECOVERY_DOT_H__ */
|
|
|