Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751614AbdITIkP (ORCPT ); Wed, 20 Sep 2017 04:40:15 -0400 Received: from mail-wm0-f49.google.com ([74.125.82.49]:44140 "EHLO mail-wm0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751561AbdITIkL (ORCPT ); Wed, 20 Sep 2017 04:40:11 -0400 X-Google-Smtp-Source: AOwi7QD40oI2vM2CjZvfl1iyXHGC+NUxZCwEdbUSuGxNie5cO9V8/qS6891Fv/hq3oWxtLiCI5c/sQ== From: Miklos Szeredi To: linux-fsdevel@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Al Viro , David Howells , Steve French Subject: [PATCH 02/10] cifs: honor AT_STATX_DONT_SYNC Date: Wed, 20 Sep 2017 10:39:57 +0200 Message-Id: <1505896805-12055-3-git-send-email-mszeredi@redhat.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1505896805-12055-1-git-send-email-mszeredi@redhat.com> References: <1505896805-12055-1-git-send-email-mszeredi@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1661 Lines: 55 The description of this flag says "Don't sync attributes with the server". In other words: always use the attributes cached in the kernel and don't send network or local messages to refresh the attributes. Signed-off-by: Miklos Szeredi Cc: Steve French --- fs/cifs/inode.c | 30 ++++++++++++++++-------------- 1 file changed, 16 insertions(+), 14 deletions(-) diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index a8693632235f..982ba2e4f549 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -2003,22 +2003,24 @@ int cifs_getattr(const struct path *path, struct kstat *stat, struct inode *inode = d_inode(dentry); int rc; - /* - * We need to be sure that all dirty pages are written and the server - * has actual ctime, mtime and file length. - */ - if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping && - inode->i_mapping->nrpages != 0) { - rc = filemap_fdatawait(inode->i_mapping); - if (rc) { - mapping_set_error(inode->i_mapping, rc); - return rc; + if (!(flags & AT_STATX_DONT_SYNC)) { + /* + * We need to be sure that all dirty pages are written and the + * server has actual ctime, mtime and file length. + */ + if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping && + inode->i_mapping->nrpages != 0) { + rc = filemap_fdatawait(inode->i_mapping); + if (rc) { + mapping_set_error(inode->i_mapping, rc); + return rc; + } } - } - rc = cifs_revalidate_dentry_attr(dentry); - if (rc) - return rc; + rc = cifs_revalidate_dentry_attr(dentry); + if (rc) + return rc; + } generic_fillattr(inode, stat); stat->blksize = CIFS_MAX_MSGSIZE; -- 2.5.5