lustre/kernel_patches/patches/md-mmp-unplug-dev-sles11.patch

   1 Index: linux-2.6.27.21-0.1/drivers/md/raid5.c
   2 ===================================================================
   3 --- linux-2.6.27.21-0.1.orig/drivers/md/raid5.c 2009-04-23 02:12:52.000000000 -0600
   4 +++ linux-2.6.27.21-0.1/drivers/md/raid5.c      2009-05-22 08:38:38.000000000 -0600
   5 @@ -1760,6 +1760,8 @@
   6                 bi->bi_next = *bip;
   7         *bip = bi;
   8         bi->bi_phys_segments++;
   9 +       if (bio_rw_flagged(bi, BIO_RW_SYNCIO) && !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 @@ -3513,6 +3515,8 @@
  15
  16                 bio_endio(bi, 0);
  17         }
  18 +       if (bio_rw_flagged(bi, BIO_RW_SYNCIO))
  19 +               raid5_unplug_device(q);
  20         return 0;
  21  }
  22