From: Ming Lei <ming.lei@redhat.com>
Date: Mon, 18 Dec 2017 12:22:13 +0000 (+0800)
Subject: dm-crypt: don't clear bvec->bv_page in crypt_free_buffer_pages()
X-Git-Tag: v4.16-rc1~86^2~19
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=92681eca6104d2ec2fdf9fc65f529deb226ab0a1;p=thirdparty%2Fkernel%2Flinux.git

dm-crypt: don't clear bvec->bv_page in crypt_free_buffer_pages()

The bio is always freed after running crypt_free_buffer_pages(), so it
isn't necessary to clear bv->bv_page.

Cc: Mike Snitzer <snitzer@redhat.com>
Cc:dm-devel@redhat.com
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 9fc12f556534b..48332666fc384 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1446,7 +1446,6 @@ static void crypt_free_buffer_pages(struct crypt_config *cc, struct bio *clone)
 	bio_for_each_segment_all(bv, clone, i) {
 		BUG_ON(!bv->bv_page);
 		mempool_free(bv->bv_page, cc->page_pool);
-		bv->bv_page = NULL;
 	}
 }