[PATCH] fs: tmpfile_create(): add missing mntget()

[Sascha Hauer]

tmpfile_create() assigns the parentpath->mnt to the new file's path
without mntget() it, so we'll get unbalanced reference count when
the tmpfile is closed. Add the missing mntget().

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 fs/fs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/fs.c b/fs/fs.c
index 75fd3a3ef9..43840c3a7a 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -2675,6 +2675,7 @@ static struct file *tmpfile_create(const struct path *parentpath,
 	if (!f)
 		return ERR_PTR(-EMFILE);
 
+	mntget(parentpath->mnt);
 	f->f_path.mnt = parentpath->mnt;
 	f->f_path.dentry = d_alloc_anon(&fsdev->sb);
 	f->f_flags = flags;
-- 
2.47.3