From b24bbaa8ec9c2aa59fd26ad8b87099e368540e47 Mon Sep 17 00:00:00 2001
From: Jeff Layton <jlayton@redhat.com>
Date: Tue, 11 Dec 2012 12:10:06 -0500
Subject: [PATCH] --- yaml --- r: 347841 b: refs/heads/master c:
 7955119e02d9fdf78a39fba8073f19ca6152613e h: refs/heads/master i:   347839:
 829ff6e9dd801c902bcf1abb00d18fa53003ff49 v: v3

---
 [refs]          | 2 +-
 trunk/fs/stat.c | 8 +++++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index cf943a860da5..a7ab57625dd2 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 836fb7e7b978e5f3b8b52e40838ddc50264723f0
+refs/heads/master: 7955119e02d9fdf78a39fba8073f19ca6152613e
diff --git a/trunk/fs/stat.c b/trunk/fs/stat.c
index d22199527880..14f45459c83d 100644
--- a/trunk/fs/stat.c
+++ b/trunk/fs/stat.c
@@ -300,11 +300,13 @@ SYSCALL_DEFINE4(readlinkat, int, dfd, const char __user *, pathname,
 	struct path path;
 	int error;
 	int empty = 0;
+	unsigned int lookup_flags = LOOKUP_EMPTY;
 
 	if (bufsiz <= 0)
 		return -EINVAL;
 
-	error = user_path_at_empty(dfd, pathname, LOOKUP_EMPTY, &path, &empty);
+retry:
+	error = user_path_at_empty(dfd, pathname, lookup_flags, &path, &empty);
 	if (!error) {
 		struct inode *inode = path.dentry->d_inode;
 
@@ -318,6 +320,10 @@ SYSCALL_DEFINE4(readlinkat, int, dfd, const char __user *, pathname,
 			}
 		}
 		path_put(&path);
+		if (retry_estale(error, lookup_flags)) {
+			lookup_flags |= LOOKUP_REVAL;
+			goto retry;
+		}
 	}
 	return error;
 }