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raid5-cache: move reclaim stop to quiesce

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Move reclaim stop to quiesce handling, where is safer for this stuff.

Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.com>
This commit is contained in:
Shaohua Li
2015-10-04 09:20:12 -07:00
committed by NeilBrown
parent ac6096e9d5
commit e6c033f79a
3 changed files with 20 additions and 12 deletions
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30
drivers/md/raid5-cache.c
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@@ -748,6 +748,24 @@ static void r5l_wake_reclaim(struct r5l_log *log, sector_t space)
md_wakeup_thread(log->reclaim_thread);
}
void r5l_quiesce(struct r5l_log *log, int state)
{
if (!log || state == 2)
return;
if (state == 0) {
log->reclaim_thread = md_register_thread(r5l_reclaim_thread,
log->rdev->mddev, "reclaim");
} else if (state == 1) {
/*
* at this point all stripes are finished, so io_unit is at
* least in STRIPE_END state
*/
r5l_wake_reclaim(log, -1L);
md_unregister_thread(&log->reclaim_thread);
r5l_do_reclaim(log);
}
}
struct r5l_recovery_ctx {
struct page *meta_page; /* current meta */
sector_t meta_total_blocks; /* total size of current meta and data */
@@ -1120,19 +1138,7 @@ io_kc:
void r5l_exit_log(struct r5l_log *log)
{
/*
* at this point all stripes are finished, so io_unit is at least in
* STRIPE_END state
*/
r5l_wake_reclaim(log, -1L);
md_unregister_thread(&log->reclaim_thread);
r5l_do_reclaim(log);
/*
* force a super update, r5l_do_reclaim might updated the super.
* mddev->thread is already stopped
*/
md_update_sb(log->rdev->mddev, 1);
kmem_cache_destroy(log->io_kc);
kfree(log);
}