lustre/kernel_patches/patches/raid5-mmp-unplug-dev-rhel7.6.patch

   1 Index: linux-3.10.0-957.el7.x86_64/drivers/md/raid5.c
   2 ===================================================================
   3 --- linux-3.10.0-957.el7.x86_64.orig/drivers/md/raid5.c
   4 +++ linux-3.10.0-957.el7.x86_64/drivers/md/raid5.c
   5 @@ -3266,6 +3266,8 @@ static int add_stripe_bio(struct stripe_
   6         *bip = bi;
   7         bio_inc_remaining(bi);
   8         md_write_inc(conf->mddev, bi);
   9 +       if ((bi->bi_rw & REQ_SYNC) && !forwrite)
  10 +               clear_bit(R5_UPTODATE, &sh->dev[dd_idx].flags); /* force to read from disk. */
  11
  12         if (forwrite) {
  13                 /* check if page is covered */
  14 @@ -5753,6 +5755,10 @@ static bool raid5_make_request(struct md
  15         if (rw == WRITE)
  16                 md_write_end(mddev);
  17         bio_endio(bi, 0);
  18 +
  19 +       if (bi->bi_rw & REQ_SYNC)
  20 +               md_wakeup_thread(mddev->thread);
  21 +
  22         return true;
  23  }
  24