[PATCH 31/52] pivot_root(2): use old_mp.mp->m_dentry instead of old.dentry

[Al Viro <viro@zeniv.linux.org.uk>]

That kills the last place where callers of lock_mount(path, &mp)
used path->dentry.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 fs/namespace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/namespace.c b/fs/namespace.c
index 9ffdbb093f57..494433d2e04b 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -4682,7 +4682,7 @@ SYSCALL_DEFINE2(pivot_root, const char __user *, new_root,
 	if (!mnt_has_parent(new_mnt))
 		return -EINVAL; /* absolute root */
 	/* make sure we can reach put_old from new_root */
-	if (!is_path_reachable(old_mnt, old.dentry, &new))
+	if (!is_path_reachable(old_mnt, old_mp.mp->m_dentry, &new))
 		return -EINVAL;
 	/* make certain new is below the root */
 	if (!is_path_reachable(new_mnt, new.dentry, &root))
-- 
2.47.2