1 files changed, 10 insertions, 9 deletions

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 6736d6dff98..7301631abe0 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1236,6 +1236,7 @@ static void end_sync_read(struct bio *bio, int error)
         /* for reconstruct, we always reschedule after a read.
          * for resync, only after all reads
          */
+        rdev_dec_pending(conf->mirrors[d].rdev, conf->mddev);
         if (test_bit(R10BIO_IsRecover, &r10_bio->state) ||
             atomic_dec_and_test(&r10_bio->remaining)) {
                 /* we have read all the blocks,
@@ -1243,7 +1244,6 @@ static void end_sync_read(struct bio *bio, int error)
                  */
                 reschedule_retry(r10_bio);
         }
-        rdev_dec_pending(conf->mirrors[d].rdev, conf->mddev);
 }
 
 static void end_sync_write(struct bio *bio, int error)
@@ -1264,11 +1264,13 @@ static void end_sync_write(struct bio *bio, int error)
 
         update_head_pos(i, r10_bio);
 
+        rdev_dec_pending(conf->mirrors[d].rdev, mddev);
         while (atomic_dec_and_test(&r10_bio->remaining)) {
                 if (r10_bio->master_bio == NULL) {
                         /* the primary of several recovery bios */
-                        md_done_sync(mddev, r10_bio->sectors, 1);
+                        sector_t s = r10_bio->sectors;
                         put_buf(r10_bio);
+                        md_done_sync(mddev, s, 1);
                         break;
                 } else {
                         r10bio_t *r10_bio2 = (r10bio_t *)r10_bio->master_bio;
@@ -1276,7 +1278,6 @@ static void end_sync_write(struct bio *bio, int error)
                         r10_bio = r10_bio2;
                 }
         }
-        rdev_dec_pending(conf->mirrors[d].rdev, mddev);
 }
 
 /*
@@ -1749,8 +1750,6 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
         if (!go_faster && conf->nr_waiting)
                 msleep_interruptible(1000);
 
-        bitmap_cond_end_sync(mddev->bitmap, sector_nr);
-
         /* Again, very different code for resync and recovery.
          * Both must result in an r10bio with a list of bios that
          * have bi_end_io, bi_sector, bi_bdev set,
@@ -1886,6 +1885,8 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
                 /* resync. Schedule a read for every block at this virt offset */
                 int count = 0;
 
+                bitmap_cond_end_sync(mddev->bitmap, sector_nr);
+
                 if (!bitmap_start_sync(mddev->bitmap, sector_nr,
                                        &sync_blocks, mddev->degraded) &&
                     !conf->fullsync && !test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery)) {
@@ -2010,13 +2011,13 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
         /* There is nowhere to write, so all non-sync
          * drives must be failed, so try the next chunk...
          */
-        {
-        sector_t sec = max_sector - sector_nr;
-        sectors_skipped += sec;
+        if (sector_nr + max_sync < max_sector)
+                max_sector = sector_nr + max_sync;
+
+        sectors_skipped += (max_sector - sector_nr);
         chunks_skipped ++;
         sector_nr = max_sector;
         goto skipped;
-        }
 }
 
 static int run(mddev_t *mddev)