From 506e0798479ed54d48f063547b1b62d33b18d54c Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Wed, 26 Jun 2019 15:49:23 +0200
Subject: [PATCH] block: use bio_release_pages in bio_map_user_iov

Use bio_release_pages instead of open coding it.

Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 block/bio.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/block/bio.c b/block/bio.c
index c759f55985139..1cbf2a7c245e8 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -1362,8 +1362,6 @@ struct bio *bio_map_user_iov(struct request_queue *q,
 	int j;
 	struct bio *bio;
 	int ret;
-	struct bio_vec *bvec;
-	struct bvec_iter_all iter_all;
 
 	if (!iov_iter_count(iter))
 		return ERR_PTR(-EINVAL);
@@ -1430,9 +1428,7 @@ struct bio *bio_map_user_iov(struct request_queue *q,
 	return bio;
 
  out_unmap:
-	bio_for_each_segment_all(bvec, bio, iter_all) {
-		put_page(bvec->bv_page);
-	}
+	bio_release_pages(bio, false);
 	bio_put(bio);
 	return ERR_PTR(ret);
 }
-- 
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