[PATCH] Only the first two bits in bio->bi_rw and rq->flags match

Not three, as assumed. This causes the barrier bit to be needlessly set
for some IO.

Signed-off-by: Jens Axboe <axboe@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index 2346a1db856..7520cc1ff9e 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -148,7 +148,7 @@ static inline void blk_add_trace_rq(struct request_queue *q, struct request *rq,
 				    u32 what)
 {
 	struct blk_trace *bt = q->blk_trace;
-	int rw = rq->flags & 0x07;
+	int rw = rq->flags & 0x03;
 
 	if (likely(!bt))
 		return;