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    Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block · a2887097
    Linus Torvalds authored
    * 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block: (46 commits)
      xen-blkfront: disable barrier/flush write support
      Added blk-lib.c and blk-barrier.c was renamed to blk-flush.c
      block: remove BLKDEV_IFL_WAIT
      aic7xxx_old: removed unused 'req' variable
      block: remove the BH_Eopnotsupp flag
      block: remove the BLKDEV_IFL_BARRIER flag
      block: remove the WRITE_BARRIER flag
      swap: do not send discards as barriers
      fat: do not send discards as barriers
      ext4: do not send discards as barriers
      jbd2: replace barriers with explicit flush / FUA usage
      jbd2: Modify ASYNC_COMMIT code to not rely on queue draining on barrier
      jbd: replace barriers with explicit flush / FUA usage
      nilfs2: replace barriers with explicit flush / FUA usage
      reiserfs: replace barriers with explicit flush / FUA usage
      gfs2: replace barriers with explicit flush / FUA usage
      btrfs: replace barriers with explicit flush / FUA usage
      xfs: replace barriers with explicit flush / FUA usage
      block: pass gfp_mask and flags to sb_issue_discard
      dm: convey that all flushes are processed as empty
      ...
    a2887097