Merge commit 'v2.6.32-rc6' into perf/core

Conflicts:
	tools/perf/Makefile

Merge reason: Resolve the conflict, merge to upstream and merge in
              perf fixes so we can add a dependent patch.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 1 deletions

diff --git a/block/blk-core.c b/block/blk-core.c
index ac0fa10f8fa5..71da5111120c 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1161,7 +1161,7 @@ static int __make_request(struct request_queue *q, struct bio *bio)
         const unsigned int ff = bio->bi_rw & REQ_FAILFAST_MASK;
         int rw_flags;
 
-        if (bio_rw_flagged(bio, BIO_RW_BARRIER) && bio_has_data(bio) &&
+        if (bio_rw_flagged(bio, BIO_RW_BARRIER) &&
             (q->next_ordered == QUEUE_ORDERED_NONE)) {
                 bio_endio(bio, -EOPNOTSUPP);
                 return 0;