From: Jens Axboe <axboe@suse.de>
Date: Mon, 9 Jan 2006 13:45:10 +0000 (+0100)
Subject: [BLOCK] bio: init ->bi_bdev in bio_init()
X-Git-Tag: firefly_0821_release~39411
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0ea60b5ad8c3630e8f44c443f173d841be7fc701;p=firefly-linux-kernel-4.4.55.git

[BLOCK] bio: init ->bi_bdev in bio_init()

For SG_IO requests, bio->bi_bdev may not be explicitly initialized. So make
bio_init() clear the field to make sure it's always NULL or valid.

Signed-off-by: Jens Axboe <axboe@suse.de>
---

diff --git a/fs/bio.c b/fs/bio.c
index dfe242a21eb4..7b3069589951 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -126,6 +126,7 @@ static void bio_fs_destructor(struct bio *bio)
 inline void bio_init(struct bio *bio)
 {
 	bio->bi_next = NULL;
+	bio->bi_bdev = NULL;
 	bio->bi_flags = 1 << BIO_UPTODATE;
 	bio->bi_rw = 0;
 	bio->bi_vcnt = 0;