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authorLinus Torvalds <torvalds@linux-foundation.org>2010-10-22 17:07:18 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-22 17:07:18 -0700
commita2887097f25cd38cadfc11d10769e2b349fb5eca (patch)
treecd4adcb305365d6ba9acd2c02d4eb9d0125c6f8d /fs/jbd/commit.c
parent8abfc6e7a45eb74e51904bbae676fae008b11366 (diff)
parent005a1d15f5a6b2bb4ada80349513effbf22b4588 (diff)
downloadop-kernel-dev-a2887097f25cd38cadfc11d10769e2b349fb5eca.zip
op-kernel-dev-a2887097f25cd38cadfc11d10769e2b349fb5eca.tar.gz
Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block
* '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 ...
Diffstat (limited to 'fs/jbd/commit.c')
-rw-r--r--fs/jbd/commit.c30
1 files changed, 3 insertions, 27 deletions
diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c
index 3f030e9..85a6883 100644
--- a/fs/jbd/commit.c
+++ b/fs/jbd/commit.c
@@ -137,34 +137,10 @@ static int journal_write_commit_record(journal_t *journal,
JBUFFER_TRACE(descriptor, "write commit block");
set_buffer_dirty(bh);
- if (journal->j_flags & JFS_BARRIER) {
- ret = __sync_dirty_buffer(bh, WRITE_SYNC | WRITE_BARRIER);
-
- /*
- * Is it possible for another commit to fail at roughly
- * the same time as this one? If so, we don't want to
- * trust the barrier flag in the super, but instead want
- * to remember if we sent a barrier request
- */
- if (ret == -EOPNOTSUPP) {
- char b[BDEVNAME_SIZE];
-
- printk(KERN_WARNING
- "JBD: barrier-based sync failed on %s - "
- "disabling barriers\n",
- bdevname(journal->j_dev, b));
- spin_lock(&journal->j_state_lock);
- journal->j_flags &= ~JFS_BARRIER;
- spin_unlock(&journal->j_state_lock);
-
- /* And try again, without the barrier */
- set_buffer_uptodate(bh);
- set_buffer_dirty(bh);
- ret = sync_dirty_buffer(bh);
- }
- } else {
+ if (journal->j_flags & JFS_BARRIER)
+ ret = __sync_dirty_buffer(bh, WRITE_SYNC | WRITE_FLUSH_FUA);
+ else
ret = sync_dirty_buffer(bh);
- }
put_bh(bh); /* One for getblk() */
journal_put_journal_head(descriptor);
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