From 14ff690c0f94cf2e37f7c448f4f09bf0b4006d62 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 11 Dec 2012 12:10:13 -0500 Subject: [PATCH] vfs: make fchmodat retry once on ESTALE errors Signed-off-by: Jeff Layton Signed-off-by: Al Viro --- fs/open.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/fs/open.c b/fs/open.c index a13a54d3e69..99c3ce5f897 100644 --- a/fs/open.c +++ b/fs/open.c @@ -514,11 +514,16 @@ SYSCALL_DEFINE3(fchmodat, int, dfd, const char __user *, filename, umode_t, mode { struct path path; int error; - - error = user_path_at(dfd, filename, LOOKUP_FOLLOW, &path); + unsigned int lookup_flags = LOOKUP_FOLLOW; +retry: + error = user_path_at(dfd, filename, lookup_flags, &path); if (!error) { error = chmod_common(&path, mode); path_put(&path); + if (retry_estale(error, lookup_flags)) { + lookup_flags |= LOOKUP_REVAL; + goto retry; + } } return error; }