X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=mm%2Fbounce.c;h=b6d2d0f1019b3975640a5b0388825b44112be7de;hb=e8a91c953fca683ef9a9335fb00d6eb3e49ac1ee;hp=3b549bf31f7dc474996bf30a0401eea82b490466;hpb=ebf8889bd1fe3615991ff4494635d237280652a2;p=linux-2.6-omap-h63xx.git

diff --git a/mm/bounce.c b/mm/bounce.c
index 3b549bf31f7..b6d2d0f1019 100644
--- a/mm/bounce.c
+++ b/mm/bounce.c
@@ -264,6 +264,12 @@ void blk_queue_bounce(struct request_queue *q, struct bio **bio_orig)
 {
 	mempool_t *pool;
 
+	/*
+	 * Data-less bio, nothing to bounce
+	 */
+	if (bio_empty_barrier(*bio_orig))
+		return;
+
 	/*
 	 * for non-isa bounce case, just check if the bounce pfn is equal
 	 * to or bigger than the highest pfn in the system -- in that case,