From: Vyacheslav Dubeyko <slava@dubeyko.com>
Date: Thu, 22 Aug 2013 23:35:44 +0000 (-0700)
Subject: nilfs2: remove double bio_put() in nilfs_end_bio_write() for BIO_EOPNOTSUPP error
X-Git-Tag: firefly_0821_release~6453^2~968
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b0e01ab2f3f31384dd9e1c660e0c9831e717e73c;p=firefly-linux-kernel-4.4.55.git

nilfs2: remove double bio_put() in nilfs_end_bio_write() for BIO_EOPNOTSUPP error

commit 2df37a19c686c2d7c4e9b4ce1505b5141e3e5552 upstream.

Remove double call of bio_put() in nilfs_end_bio_write() for the case of
BIO_EOPNOTSUPP error detection.  The issue was found by Dan Carpenter
and he suggests first version of the fix too.

Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Tested-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c
index dc9a913784ab..5bacf46dc4b3 100644
--- a/fs/nilfs2/segbuf.c
+++ b/fs/nilfs2/segbuf.c
@@ -345,8 +345,7 @@ static void nilfs_end_bio_write(struct bio *bio, int err)
 
 	if (err == -EOPNOTSUPP) {
 		set_bit(BIO_EOPNOTSUPP, &bio->bi_flags);
-		bio_put(bio);
-		/* to be detected by submit_seg_bio() */
+		/* to be detected by nilfs_segbuf_submit_bio() */
 	}
 
 	if (!uptodate)