1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 425958a76b84..f0f0585c107e 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -2645,6 +2645,7 @@ static void handle_stripe5(struct stripe_head *sh)
         struct r5dev *dev;
         unsigned long pending = 0;
         mdk_rdev_t *blocked_rdev = NULL;
+        int prexor;
 
         memset(&s, 0, sizeof(s));
         pr_debug("handling stripe %llu, state=%#lx cnt=%d, pd_idx=%d "
@@ -2774,9 +2775,11 @@ static void handle_stripe5(struct stripe_head *sh)
         /* leave prexor set until postxor is done, allows us to distinguish
          * a rmw from a rcw during biodrain
          */
+        prexor = 0;
         if (test_bit(STRIPE_OP_PREXOR, &sh->ops.complete) &&
                 test_bit(STRIPE_OP_POSTXOR, &sh->ops.complete)) {
 
+                prexor = 1;
                 clear_bit(STRIPE_OP_PREXOR, &sh->ops.complete);
                 clear_bit(STRIPE_OP_PREXOR, &sh->ops.ack);
                 clear_bit(STRIPE_OP_PREXOR, &sh->ops.pending);
@@ -2810,6 +2813,8 @@ static void handle_stripe5(struct stripe_head *sh)
                                 if (!test_and_set_bit(
                                     STRIPE_OP_IO, &sh->ops.pending))
                                         sh->ops.count++;
+                                if (prexor)
+                                        continue;
                                 if (!test_bit(R5_Insync, &dev->flags) ||
                                     (i == sh->pd_idx && s.failed == 0))
                                         set_bit(STRIPE_INSYNC, &sh->state);