From 96948fc6069b68380abac2944b8b02b43a2e2057 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 11 Dec 2012 12:10:14 -0500 Subject: vfs: fix user_statfs to retry once on ESTALE errors Signed-off-by: Jeff Layton Signed-off-by: Al Viro --- fs/statfs.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'fs/statfs.c') diff --git a/fs/statfs.c b/fs/statfs.c index f8e832e6f0a..c219e733f55 100644 --- a/fs/statfs.c +++ b/fs/statfs.c @@ -77,10 +77,17 @@ EXPORT_SYMBOL(vfs_statfs); int user_statfs(const char __user *pathname, struct kstatfs *st) { struct path path; - int error = user_path_at(AT_FDCWD, pathname, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, &path); + int error; + unsigned int lookup_flags = LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT; +retry: + error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path); if (!error) { error = vfs_statfs(&path, st); path_put(&path); + if (retry_estale(error, lookup_flags)) { + lookup_flags |= LOOKUP_REVAL; + goto retry; + } } return error; } -- cgit v1.2.3