[PATCH v4 02/17] vfs: add missing blkdev_put() in get_tree_bdev()

From: Ian Kent <raven@themaw.net>
To: linux-xfs <linux-xfs@vger.kernel.org>
Cc: Brian Foster <bfoster@redhat.com>,
	Eric Sandeen <sandeen@sandeen.net>,
	David Howells <dhowells@redhat.com>,
	Dave Chinner <dchinner@redhat.com>,
	Al Viro <viro@ZenIV.linux.org.uk>
Subject: [PATCH v4 02/17] vfs: add missing blkdev_put() in get_tree_bdev()
Date: Thu, 03 Oct 2019 18:25:28 +0800	[thread overview]
Message-ID: <157009832879.13858.5261547183927327078.stgit@fedora-28> (raw)
In-Reply-To: <157009817203.13858.7783767645177567968.stgit@fedora-28>

There appear to be a couple of missing blkdev_put() in get_tree_bdev().
---
 fs/super.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/super.c b/fs/super.c
index a7f62c964e58..fd816014bd7d 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1268,6 +1268,7 @@ int get_tree_bdev(struct fs_context *fc,
 	mutex_lock(&bdev->bd_fsfreeze_mutex);
 	if (bdev->bd_fsfreeze_count > 0) {
 		mutex_unlock(&bdev->bd_fsfreeze_mutex);
+		blkdev_put(bdev, mode);
 		warnf(fc, "%pg: Can't mount, blockdev is frozen", bdev);
 		return -EBUSY;
 	}
@@ -1276,8 +1277,10 @@ int get_tree_bdev(struct fs_context *fc,
 	fc->sget_key = bdev;
 	s = sget_fc(fc, test_bdev_super_fc, set_bdev_super_fc);
 	mutex_unlock(&bdev->bd_fsfreeze_mutex);
-	if (IS_ERR(s))
+	if (IS_ERR(s)) {
+		blkdev_put(bdev, mode);
 		return PTR_ERR(s);
+	}
 
 	if (s->s_root) {
 		/* Don't summarily change the RO/RW state. */

