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 dc9a913..5bacf46 100644 (file)
--- 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)