[PATCH] Use bio_endio instead of bio_put in error path of blk_rq_append_bio

[Jiří Paleček]

 Avoids page leak from bounced requests
---
 block/blk-map.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/block/blk-map.c b/block/blk-map.c
index d3a94719f03f..702d68166689 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -26,7 +26,8 @@ int blk_rq_append_bio(struct request *rq, struct bio **bio)
        } else {
                if (!ll_back_merge_fn(rq->q, rq, *bio)) {
                        if (orig_bio != *bio) {
-                               bio_put(*bio);
+                               bio_inc_remaining(orig_bio);
+                               bio_endio(*bio);
                                *bio = orig_bio;
                        }
                        return -EINVAL;
-- 
2.15.1