lustre/kernel_patches/patches/raid5-mmp-unplug-dev-3.8.patch

   1 --- linux-3.10.0-685.el7.x86_64/drivers/md/raid5.c.orig 2017-06-28 14:06:00.627299582 -0700
   2 +++ linux-3.10.0-685.el7.x86_64/drivers/md/raid5.c      2017-06-28 14:08:01.564618793 -0700
   3 @@ -3090,6 +3090,8 @@ 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 @@ -5538,6 +5540,9 @@ static bool raid5_make_request(struct md
  13                                          bi, 0);
  14                 bio_endio(bi, 0);
  15         }
  16 +
  17 +       if (bi->bi_rw & REQ_SYNC)
  18 +               md_wakeup_thread(mddev->thread);
  19         return true;
  20  }
  21