From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758119Ab2DZP6N (ORCPT ); Thu, 26 Apr 2012 11:58:13 -0400 Received: from mail-yx0-f174.google.com ([209.85.213.174]:58690 "EHLO mail-yx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757991Ab2DZP6J (ORCPT ); Thu, 26 Apr 2012 11:58:09 -0400 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, miklos@szeredi.hu, hch@infradead.org, michael.brantley@deshaw.com Subject: [PATCH v1 02/12] vfs: make fstatat retry on ESTALE errors from getattr call Date: Thu, 26 Apr 2012 11:57:13 -0400 Message-Id: <1335455843-16089-1-git-send-email-jlayton@redhat.com> X-Mailer: git-send-email 1.7.7.6 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Jeff Layton --- fs/stat.c | 16 ++++++++++------ 1 files changed, 10 insertions(+), 6 deletions(-) diff --git a/fs/stat.c b/fs/stat.c index c733dc5..f3eef0d 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -73,7 +73,8 @@ int vfs_fstatat(int dfd, const char __user *filename, struct kstat *stat, { struct path path; int error = -EINVAL; - int lookup_flags = 0; + unsigned int try = 0; + unsigned int lookup_flags = 0; if ((flag & ~(AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT | AT_EMPTY_PATH)) != 0) @@ -84,12 +85,15 @@ int vfs_fstatat(int dfd, const char __user *filename, struct kstat *stat, if (flag & AT_EMPTY_PATH) lookup_flags |= LOOKUP_EMPTY; - error = user_path_at(dfd, filename, lookup_flags, &path); - if (error) - goto out; + do { + error = user_path_at(dfd, filename, lookup_flags, &path); + if (error) + break; - error = vfs_getattr(path.mnt, path.dentry, stat); - path_put(&path); + error = vfs_getattr(path.mnt, path.dentry, stat); + path_put(&path); + lookup_flags |= LOOKUP_REVAL; + } while (retry_estale(error, try++)); out: return error; } -- 1.7.7.6