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dm raid1: fix to commit pending clear region requests 

With the code as it is, it is possible for oustanding clear region requests
never to get flushed when a mirror is deactivated or suspended.  This means
there will always be some resync work required when a mirror is activated,
even though it may very well be in-sync.

Always requesting the flush doesn't hurt us.  This is because the log tracks
whether any changes occurred and, if not, no flush is performed.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jonathan Brassow 2007-05-09 02:33:07 -07:00 committed by Linus Torvalds
parent 26b9f22870
commit f5353cd7c9
1 changed files with 1 additions and 2 deletions
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3
drivers/md/dm-raid1.c
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@ -405,8 +405,7 @@ static void rh_update_states(struct region_hash *rh)
mempool_free(reg, rh->region_pool); mempool_free(reg, rh->region_pool);
} }
if (!list_empty(&recovered)) rh->log->type->flush(rh->log);
rh->log->type->flush(rh->log);
list_for_each_entry_safe (reg, next, &clean, list) list_for_each_entry_safe (reg, next, &clean, list)
mempool_free(reg, rh->region_pool); mempool_free(reg, rh->region_pool);