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authorShaohua Li <shli@fb.com>2015-08-13 21:32:02 (GMT)
committerNeilBrown <neilb@suse.com>2015-11-01 02:48:26 (GMT)
commit9c3e333d3f8b01407c8e9f78958e28a8594a0827 (patch)
treefa18a05290aa25dfa15b80f2e14c8f3a5341d43d /drivers/md/raid5.c
parent5cb2fbd6ea0d151dcb12d98c06c8761eedfed2ee (diff)
downloadlinux-9c3e333d3f8b01407c8e9f78958e28a8594a0827.tar.xz
raid5: disable batch with log enabled
With log enabled, r5l_write_stripe will add the stripe to log. With batch, several stripes are linked together. The stripes must be in the same state. While with log, the log/reclaim unit is stripe, we can't guarantee the several stripes are in the same state. Disabling batch for log now. Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: NeilBrown <neilb@suse.com>
Diffstat (limited to 'drivers/md/raid5.c')
-rw-r--r--drivers/md/raid5.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 508a29b..a9604d4 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -755,6 +755,10 @@ static void unlock_two_stripes(struct stripe_head *sh1, struct stripe_head *sh2)
/* Only freshly new full stripe normal write stripe can be added to a batch list */
static bool stripe_can_batch(struct stripe_head *sh)
{
+ struct r5conf *conf = sh->raid_conf;
+
+ if (conf->log)
+ return false;
return test_bit(STRIPE_BATCH_READY, &sh->state) &&
!test_bit(STRIPE_BITMAP_PENDING, &sh->state) &&
is_full_stripe_write(sh);