stripes are in hash list. If we are waiting for a free stripe, we must
make sure there is free stripe in corresponding hash list. To do this,
we simpliy allocate at lease NR_STRIPE_HASH_LOCKS stripes at runtime
stripe allocation.
Signed-off-by: Shaohua Li <shli@xxxxxx>
---
drivers/md/raid5.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index bfa2042..0cceb71 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5867,7 +5867,9 @@ static void raid5d(struct md_thread *thread)
spin_unlock_irq(&conf->device_lock);
if (test_and_clear_bit(R5_ALLOC_MORE, &conf->cache_state)) {
- grow_one_stripe(conf, __GFP_NOWARN);
+ int i;
+ for (i = 0; i < NR_STRIPE_HASH_LOCKS; i++)
+ grow_one_stripe(conf, __GFP_NOWARN);
/* Set flag even if allocation failed. This helps
* slow down allocation requests when mem is short
*/
--
1.8.1
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