1 files changed, 20 insertions, 5 deletions

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index e2943fb74056..e9e3308cb0a7 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -854,7 +854,7 @@ static void flush_pending_writes(struct r1conf *conf)
  *    there is no normal IO happeing.  It must arrange to call
  *    lower_barrier when the particular background IO completes.
  */
-static void raise_barrier(struct r1conf *conf, sector_t sector_nr)
+static sector_t raise_barrier(struct r1conf *conf, sector_t sector_nr)
 {
         int idx = sector_to_idx(sector_nr);
 
@@ -885,13 +885,23 @@ static void raise_barrier(struct r1conf *conf, sector_t sector_nr)
          *    max resync count which allowed on current I/O barrier bucket.
          */
         wait_event_lock_irq(conf->wait_barrier,
-                            !conf->array_frozen &&
+                            (!conf->array_frozen &&
                              !atomic_read(&conf->nr_pending[idx]) &&
-                             atomic_read(&conf->barrier[idx]) < RESYNC_DEPTH,
+                             atomic_read(&conf->barrier[idx]) < RESYNC_DEPTH) ||
+                                test_bit(MD_RECOVERY_INTR, &conf->mddev->recovery),
                             conf->resync_lock);
 
+        if (test_bit(MD_RECOVERY_INTR, &conf->mddev->recovery)) {
+                atomic_dec(&conf->barrier[idx]);
+                spin_unlock_irq(&conf->resync_lock);
+                wake_up(&conf->wait_barrier);
+                return -EINTR;
+        }
+
         atomic_inc(&conf->nr_sync_pending);
         spin_unlock_irq(&conf->resync_lock);
+
+        return 0;
 }
 
 static void lower_barrier(struct r1conf *conf, sector_t sector_nr)
@@ -1092,6 +1102,8 @@ static void alloc_behind_master_bio(struct r1bio *r1_bio,
                 goto skip_copy;
         }
 
+        behind_bio->bi_write_hint = bio->bi_write_hint;
+
         while (i < vcnt && size) {
                 struct page *page;
                 int len = min_t(int, PAGE_SIZE, size);
@@ -2662,9 +2674,12 @@ static sector_t raid1_sync_request(struct mddev *mddev, sector_t sector_nr,
 
         bitmap_cond_end_sync(mddev->bitmap, sector_nr,
                 mddev_is_clustered(mddev) && (sector_nr + 2 * RESYNC_SECTORS > conf->cluster_sync_high));
-        r1_bio = raid1_alloc_init_r1buf(conf);
 
-        raise_barrier(conf, sector_nr);
+
+        if (raise_barrier(conf, sector_nr))
+                return 0;
+
+        r1_bio = raid1_alloc_init_r1buf(conf);
 
         rcu_read_lock();
         /*