From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: linux-nfs-owner@vger.kernel.org Received: from mail-vb0-f46.google.com ([209.85.212.46]:37611 "EHLO mail-vb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760755Ab2IGOTD (ORCPT ); Fri, 7 Sep 2012 10:19:03 -0400 Received: by vbbff1 with SMTP id ff1so3364273vbb.19 for ; Fri, 07 Sep 2012 07:19:02 -0700 (PDT) From: Jeff Layton To: viro@ZenIV.linux.org.uk Cc: linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org, michael.brantley@deshaw.com, hch@infradead.org, miklos@szeredi.hu, pstaubach@exagrid.com Subject: [PATCH v6 17/20] vfs: make fchmodat retry once on ESTALE errors Date: Fri, 7 Sep 2012 10:18:24 -0400 Message-Id: <1347027507-20956-18-git-send-email-jlayton@redhat.com> In-Reply-To: <1347027507-20956-1-git-send-email-jlayton@redhat.com> References: <1347027507-20956-1-git-send-email-jlayton@redhat.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: Signed-off-by: Jeff Layton --- fs/open.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/fs/open.c b/fs/open.c index a015cb8..232cbfb 100644 --- a/fs/open.c +++ b/fs/open.c @@ -506,12 +506,17 @@ SYSCALL_DEFINE3(fchmodat, int, dfd, const char __user *, filename, umode_t, mode { struct path path; int error; + unsigned int try = 0; + int lookup_flags = LOOKUP_FOLLOW; - error = user_path_at(dfd, filename, LOOKUP_FOLLOW, &path); - if (!error) { + do { + error = user_path_at(dfd, filename, lookup_flags, &path); + if (error) + break; error = chmod_common(&path, mode); path_put(&path); - } + lookup_flags |= LOOKUP_REVAL; + } while (retry_estale(error, try++)); return error; } -- 1.7.11.4