lustre/kernel_patches/patches/raid5-mmp-unplug-dev-3.7.patch

   1 --- linux-3.6.0-0.3.fc.el6.x86_64/drivers/md/raid5.c.orig       2012-11-21 08:51:15.312175089 -0500
   2 +++ linux-3.6.0-0.3.fc.el6.x86_64/drivers/md/raid5.c            2012-11-21 09:02:38.415174560 -0500
   3 @@ -2394,6 +2394,8 @@ static int add_stripe_bio(struct stripe_
   4                 bi->bi_next = *bip;
   5         *bip = bi;
   6         raid5_inc_bi_active_stripes(bi);
   7 +       if ((bi->bi_rw & REQ_SYNC) && !forwrite)
   8 +               clear_bit(R5_UPTODATE, &sh->dev[dd_idx].flags); /* force to read from disk. */
   9
  10         if (forwrite) {
  11                 /* check if page is covered */
  12 @@ -4217,6 +4222,9 @@ static void make_request(struct mddev *m
  13
  14                 bio_endio(bi, 0);
  15         }
  16 +
  17 +       if (bi->bi_rw & REQ_SYNC)
  18 +               md_wakeup_thread(mddev->thread);
  19  }
  20
  21  static sector_t raid5_size(struct mddev *mddev, sector_t sectors, int raid_disks);