From bd9bbc9842bde1b14046cdbda1153f0d49061135 Mon Sep 17 00:00:00 2001
From: Jeff Layton <jlayton@redhat.com>
Date: Tue, 11 Dec 2012 12:10:17 -0500
Subject: [PATCH] vfs: make llistxattr retry once on ESTALE error
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/xattr.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/fs/xattr.c b/fs/xattr.c
index 1dc1eac17319..49d09e158809 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -595,12 +595,17 @@ SYSCALL_DEFINE3(llistxattr, const char __user *, pathname, char __user *, list,
{
struct path path;
ssize_t error;
-
- error = user_lpath(pathname, &path);
+ unsigned int lookup_flags = 0;
+retry:
+ error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path);
if (error)
return error;
error = listxattr(path.dentry, list, size);
path_put(&path);
+ if (retry_estale(error, lookup_flags)) {
+ lookup_flags |= LOOKUP_REVAL;
+ goto retry;
+ }
return error;
}
--
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