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Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block

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* '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
  ...
This commit is contained in:
Linus Torvalds 2010-10-22 17:07:18 -07:00
commit a2887097f2
80 changed files with 845 additions and 1921 deletions
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10
fs/nilfs2/super.c
View file

@ -177,17 +177,9 @@ static int nilfs_sync_super(struct nilfs_sb_info *sbi, int flag)
retry:
set_buffer_dirty(nilfs->ns_sbh[0]);
if (nilfs_test_opt(sbi, BARRIER)) {
err = __sync_dirty_buffer(nilfs->ns_sbh[0],
WRITE_SYNC | WRITE_BARRIER);
if (err == -EOPNOTSUPP) {
nilfs_warning(sbi->s_super, __func__,
"barrier-based sync failed. "
"disabling barriers\n");
nilfs_clear_opt(sbi, BARRIER);
goto retry;
}
WRITE_SYNC | WRITE_FLUSH_FUA);
} else {
err = sync_dirty_buffer(nilfs->ns_sbh[0]);
}

7
fs/nilfs2/the_nilfs.c
View file

@ -775,9 +775,7 @@ int nilfs_discard_segments(struct the_nilfs *nilfs, __u64 *segnump,
ret = blkdev_issue_discard(nilfs->ns_bdev,
start * sects_per_block,
nblocks * sects_per_block,
GFP_NOFS,
BLKDEV_IFL_WAIT |
BLKDEV_IFL_BARRIER);
GFP_NOFS, 0);
if (ret < 0)
return ret;
nblocks = 0;
@ -787,8 +785,7 @@ int nilfs_discard_segments(struct the_nilfs *nilfs, __u64 *segnump,
ret = blkdev_issue_discard(nilfs->ns_bdev,
start * sects_per_block,
nblocks * sects_per_block,
GFP_NOFS,
BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER);
GFP_NOFS, 0);
return ret;
}