1 files changed, 9 insertions, 4 deletions

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index b30f74be3982..164b25dca101 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -775,6 +775,7 @@ static int make_request(request_queue_t *q, struct bio * bio)
         struct bio_list bl;
         struct page **behind_pages = NULL;
         const int rw = bio_data_dir(bio);
+        const int do_sync = bio_sync(bio);
         int do_barriers;
 
         /*
@@ -835,7 +836,7 @@ static int make_request(request_queue_t *q, struct bio * bio)
                 read_bio->bi_sector = r1_bio->sector + mirror->rdev->data_offset;
                 read_bio->bi_bdev = mirror->rdev->bdev;
                 read_bio->bi_end_io = raid1_end_read_request;
-                read_bio->bi_rw = READ;
+                read_bio->bi_rw = READ | do_sync;
                 read_bio->bi_private = r1_bio;
 
                 generic_make_request(read_bio);
@@ -906,7 +907,7 @@ static int make_request(request_queue_t *q, struct bio * bio)
                 mbio->bi_sector = r1_bio->sector + conf->mirrors[i].rdev->data_offset;
                 mbio->bi_bdev = conf->mirrors[i].rdev->bdev;
                 mbio->bi_end_io = raid1_end_write_request;
-                mbio->bi_rw = WRITE | do_barriers;
+                mbio->bi_rw = WRITE | do_barriers | do_sync;
                 mbio->bi_private = r1_bio;
 
                 if (behind_pages) {
@@ -941,6 +942,8 @@ static int make_request(request_queue_t *q, struct bio * bio)
         blk_plug_device(mddev->queue);
         spin_unlock_irqrestore(&conf->device_lock, flags);
 
+        if (do_sync)
+                md_wakeup_thread(mddev->thread);
 #if 0
         while ((bio = bio_list_pop(&bl)) != NULL)
                 generic_make_request(bio);
@@ -1541,6 +1544,7 @@ static void raid1d(mddev_t *mddev)
                          * We already have a nr_pending reference on these rdevs.
                          */
                         int i;
+                        const int do_sync = bio_sync(r1_bio->master_bio);
                         clear_bit(R1BIO_BarrierRetry, &r1_bio->state);
                         clear_bit(R1BIO_Barrier, &r1_bio->state);
                         for (i=0; i < conf->raid_disks; i++)
@@ -1561,7 +1565,7 @@ static void raid1d(mddev_t *mddev)
                                                 conf->mirrors[i].rdev->data_offset;
                                         bio->bi_bdev = conf->mirrors[i].rdev->bdev;
                                         bio->bi_end_io = raid1_end_write_request;
-                                        bio->bi_rw = WRITE;
+                                        bio->bi_rw = WRITE | do_sync;
                                         bio->bi_private = r1_bio;
                                         r1_bio->bios[i] = bio;
                                         generic_make_request(bio);
@@ -1593,6 +1597,7 @@ static void raid1d(mddev_t *mddev)
                                        (unsigned long long)r1_bio->sector);
                                 raid_end_bio_io(r1_bio);
                         } else {
+                                const int do_sync = bio_sync(r1_bio->master_bio);
                                 r1_bio->bios[r1_bio->read_disk] =
                                         mddev->ro ? IO_BLOCKED : NULL;
                                 r1_bio->read_disk = disk;
@@ -1608,7 +1613,7 @@ static void raid1d(mddev_t *mddev)
                                 bio->bi_sector = r1_bio->sector + rdev->data_offset;
                                 bio->bi_bdev = rdev->bdev;
                                 bio->bi_end_io = raid1_end_read_request;
-                                bio->bi_rw = READ;
+                                bio->bi_rw = READ | do_sync;
                                 bio->bi_private = r1_bio;
                                 unplug = 1;
                                 generic_make_request(bio);