Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[karo-tx-linux.git] / drivers / md / raid5.c

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 49bb8d3ff9be8c7741a5bebc6b210fde38989a09..45933c1606972c007fee4393b82c05db7b24f7ec 100644 (file)
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -3499,6 +3499,7 @@ returnbi:
                }
        if (!discard_pending &&
            test_bit(R5_Discard, &sh->dev[sh->pd_idx].flags)) {
+               int hash;
                clear_bit(R5_Discard, &sh->dev[sh->pd_idx].flags);
                clear_bit(R5_UPTODATE, &sh->dev[sh->pd_idx].flags);
                if (sh->qd_idx >= 0) {
@@ -3512,16 +3513,17 @@ returnbi:
                 * no updated data, so remove it from hash list and the stripe
                 * will be reinitialized
                 */
-               spin_lock_irq(&conf->device_lock);
 unhash:
+               hash = sh->hash_lock_index;
+               spin_lock_irq(conf->hash_locks + hash);
                remove_hash(sh);
+               spin_unlock_irq(conf->hash_locks + hash);
                if (head_sh->batch_head) {
                        sh = list_first_entry(&sh->batch_list,
                                              struct stripe_head, batch_list);
                        if (sh != head_sh)
                                        goto unhash;
                }
-               spin_unlock_irq(&conf->device_lock);
                sh = head_sh;
 
                if (test_bit(STRIPE_SYNC_REQUESTED, &sh->state))