1 files changed, 9 insertions, 32 deletions

diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c
index 28a9ddaa0c49..34a4861c14b8 100644
--- a/fs/jbd/commit.c
+++ b/fs/jbd/commit.c
@@ -119,7 +119,6 @@ static int journal_write_commit_record(journal_t *journal,
 	struct buffer_head *bh;
 	journal_header_t *header;
 	int ret;
-	int barrier_done = 0;
 
 	if (is_journal_aborted(journal))
 		return 0;
@@ -137,34 +136,12 @@ 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) {
-		set_buffer_ordered(bh);
-		barrier_done = 1;
-	}
-	ret = sync_dirty_buffer(bh);
-	if (barrier_done)
-		clear_buffer_ordered(bh);
-	/* 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 && barrier_done) {
-		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);
+	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);
 
@@ -317,7 +294,7 @@ void journal_commit_transaction(journal_t *journal)
 	int first_tag = 0;
 	int tag_flag;
 	int i;
-	int write_op = WRITE;
+	int write_op = WRITE_SYNC;
 
 	/*
 	 * First job: lock down the current transaction and wait for
@@ -610,13 +587,13 @@ void journal_commit_transaction(journal_t *journal)
 		/* Bump b_count to prevent truncate from stumbling over
                    the shadowed buffer!  @@@ This can go if we ever get
                    rid of the BJ_IO/BJ_Shadow pairing of buffers. */
-		atomic_inc(&jh2bh(jh)->b_count);
+		get_bh(jh2bh(jh));
 
 		/* Make a temporary IO buffer with which to write it out
                    (this will requeue both the metadata buffer and the
                    temporary IO buffer). new_bh goes on BJ_IO*/
 
-		set_bit(BH_JWrite, &jh2bh(jh)->b_state);
+		set_buffer_jwrite(jh2bh(jh));
 		/*
 		 * akpm: journal_write_metadata_buffer() sets
 		 * new_bh->b_transaction to commit_transaction.
@@ -626,7 +603,7 @@ void journal_commit_transaction(journal_t *journal)
 		JBUFFER_TRACE(jh, "ph3: write metadata");
 		flags = journal_write_metadata_buffer(commit_transaction,
 						      jh, &new_jh, blocknr);
-		set_bit(BH_JWrite, &jh2bh(new_jh)->b_state);
+		set_buffer_jwrite(jh2bh(new_jh));
 		wbuf[bufs++] = jh2bh(new_jh);
 
 		/* Record the new block's tag in the current descriptor
@@ -736,7 +713,7 @@ wait_for_iobuf:
                    shadowed buffer */
 		jh = commit_transaction->t_shadow_list->b_tprev;
 		bh = jh2bh(jh);
-		clear_bit(BH_JWrite, &bh->b_state);
+		clear_buffer_jwrite(bh);
 		J_ASSERT_BH(bh, buffer_jbddirty(bh));
 
 		/* The metadata is now released for reuse, but we need