[v6,01/12] vfs: add missing blkdev_put() in get_tree_bdev()

Commit Message

Ian Kent Oct. 16, 2019, 12:40 a.m. UTC

There appear to be a couple of missing blkdev_put() in get_tree_bdev().
This change has been sent to Linus and has been included in the current
rc kernel but is not present in the xfs-linux tree.
---
 fs/super.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Patch

diff --git a/fs/super.c b/fs/super.c
index f627b7c53d2b..cfadab2cbf35 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1300,6 +1300,7 @@  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;
 	}
@@ -1308,8 +1309,10 @@  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. */