linux-kernel - [PATCH 2/3] devpts: use follow_up

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Message-Id: <20180405104549.12365-3-christian.brauner@ubuntu.com>
Date:   Thu,  5 Apr 2018 12:45:48 +0200
From:   Christian Brauner <christian.brauner@...ntu.com>
To:     ebiederm@...ssion.com, torvalds@...ux-foundation.o,
        viro@...iv.linux.org.uk, linux-kernel@...r.kernel.org
Cc:     Christian Brauner <christian.brauner@...ntu.com>
Subject: [PATCH 2/3] devpts: use follow_up_bind() helper

Signed-off-by: Christian Brauner <christian.brauner@...ntu.com>
---
 fs/devpts/inode.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index e072e955ce33..5e516846074e 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -181,9 +181,7 @@ struct vfsmount *devpts_mntget(struct file *filp, struct pts_fs_info *fsi)
 	/* Walk upward while the start point is a bind mount of
 	 * a single file.
 	 */
-	while (path.mnt->mnt_root == path.dentry)
-		if (follow_up(&path) == 0)
-			break;
+	follow_up_bind(&path);
 
 	/* devpts_ptmx_path() finds a devpts fs or returns an error. */
 	if ((path.mnt->mnt_sb->s_magic != DEVPTS_SUPER_MAGIC) ||
-- 
2.15.1