X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=block%2Fblk-map.c;h=0f4b4b88181178b0344127df63af79f7d95da915;hb=1d678f365dae28420fa7329a2a35390b3582678d;hp=4849fa36161eb697b47b08efa27af085b58bed3c;hpb=54cebc68c81eacac41a21bdfe99dc889d3882c60;p=linux-2.6-omap-h63xx.git

diff --git a/block/blk-map.c b/block/blk-map.c
index 4849fa36161..0f4b4b88181 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -217,6 +217,12 @@ int blk_rq_map_user_iov(struct request_queue *q, struct request *rq,
 		return PTR_ERR(bio);
 
 	if (bio->bi_size != len) {
+		/*
+		 * Grab an extra reference to this bio, as bio_unmap_user()
+		 * expects to be able to drop it twice as it happens on the
+		 * normal IO completion path
+		 */
+		bio_get(bio);
 		bio_endio(bio, 0);
 		bio_unmap_user(bio);
 		return -EINVAL;