vfs: make lremovexattr retry once on ESTALE error
authorJeff Layton <jlayton@redhat.com>
Tue, 11 Dec 2012 17:10:18 +0000 (12:10 -0500)
committerAl Viro <viro@zeniv.linux.org.uk>
Thu, 20 Dec 2012 23:50:11 +0000 (18:50 -0500)
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/xattr.c

index 4caa8ef..3377dff 100644 (file)
@@ -668,8 +668,9 @@ SYSCALL_DEFINE2(lremovexattr, const char __user *, pathname,
 {
        struct path path;
        int 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 = mnt_want_write(path.mnt);
@@ -678,6 +679,10 @@ SYSCALL_DEFINE2(lremovexattr, const char __user *, pathname,
                mnt_drop_write(path.mnt);
        }
        path_put(&path);
+       if (retry_estale(error, lookup_flags)) {
+               lookup_flags |= LOOKUP_REVAL;
+               goto retry;
+       }
        return error;
 }