lustre/kernel_patches/patches/raid5-mmp-unplug-dev-sles10.patch

   1 Index: linux-2.6.16.60-0.33/drivers/md/raid5.c
   2 ===================================================================
   3 --- linux-2.6.16.60-0.33.orig/drivers/md/raid5.c
   4 +++ linux-2.6.16.60-0.33/drivers/md/raid5.c
   5 @@ -900,6 +900,8 @@ static int add_stripe_bio(struct stripe_
   6                 bi->bi_next = *bip;
   7         *bip = bi;
   8         bi->bi_phys_segments ++;
   9 +       if (bio_sync(bi) && !forwrite)
  10 +               clear_bit(R5_UPTODATE, &sh->dev[dd_idx].flags); /* force to read from disk. */
  11         spin_unlock_irq(&conf->device_lock);
  12         spin_unlock(&sh->lock);
  13
  14 @@ -1617,6 +1619,8 @@ static int make_request (request_queue_t
  15                 bi->bi_end_io(bi, bytes, 0);
  16         }
  17         spin_unlock_irq(&conf->device_lock);
  18 +       if (bio_sync(bi))
  19 +               raid5_unplug_device(q);
  20         return 0;
  21  }
  22