From 48f7530d3f722617aa7cfea62b09b0c1a8d0173e Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 11 Dec 2012 12:10:11 -0500 Subject: [PATCH] vfs: have do_sys_truncate retry once on an ESTALE error Signed-off-by: Jeff Layton Signed-off-by: Al Viro --- fs/open.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/fs/open.c b/fs/open.c index c819bbdab47f..07449b911a4d 100644 --- a/fs/open.c +++ b/fs/open.c @@ -115,17 +115,23 @@ EXPORT_SYMBOL_GPL(vfs_truncate); static long do_sys_truncate(const char __user *pathname, loff_t length) { + unsigned int lookup_flags = LOOKUP_FOLLOW; struct path path; int error; if (length < 0) /* sorry, but loff_t says... */ return -EINVAL; - error = user_path(pathname, &path); +retry: + error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path); if (!error) { error = vfs_truncate(&path, length); path_put(&path); } + if (retry_estale(error, lookup_flags)) { + lookup_flags |= LOOKUP_REVAL; + goto retry; + } return error; }