From patchwork Mon May 23 16:35:48 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benny Halevy X-Patchwork-Id: 809352 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p4NGZWcP022882 for ; Mon, 23 May 2011 16:35:55 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756143Ab1EWQfz (ORCPT ); Mon, 23 May 2011 12:35:55 -0400 Received: from daytona.panasas.com ([67.152.220.89]:9013 "EHLO daytona.panasas.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756064Ab1EWQfy (ORCPT ); Mon, 23 May 2011 12:35:54 -0400 Received: from lt.bhalevy.com.com ([172.17.33.44]) by daytona.panasas.com with Microsoft SMTPSVC(6.0.3790.4675); Mon, 23 May 2011 12:35:53 -0400 From: Benny Halevy To: Trond Myklebust Cc: linux-nfs@vger.kernel.org, Boaz Harrosh Subject: [PATCH v6 08/26] pnfs: align layoutget requests on page boundaries Date: Mon, 23 May 2011 19:35:48 +0300 Message-Id: <1306168548-11231-1-git-send-email-bhalevy@panasas.com> X-Mailer: git-send-email 1.7.3.4 In-Reply-To: <4DDA8C3D.5080706@panasas.com> References: <4DDA8C3D.5080706@panasas.com> X-OriginalArrivalTime: 23 May 2011 16:35:54.0030 (UTC) FILETIME=[7C0AA4E0:01CC1967] Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Mon, 23 May 2011 16:35:55 +0000 (UTC) Signed-off-by: Benny Halevy --- fs/nfs/pnfs.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index c2f09e9..2357ee3 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -850,6 +850,7 @@ pnfs_update_layout(struct inode *ino, .offset = pos, .length = count, }; + unsigned pg_offset; struct nfs_inode *nfsi = NFS_I(ino); struct nfs_client *clp = NFS_SERVER(ino)->nfs_client; struct pnfs_layout_hdr *lo; @@ -899,6 +900,13 @@ pnfs_update_layout(struct inode *ino, spin_unlock(&clp->cl_lock); } + pg_offset = arg.offset & ~PAGE_CACHE_MASK; + if (pg_offset) { + arg.offset -= pg_offset; + arg.length += pg_offset; + } + arg.length = PAGE_CACHE_ALIGN(arg.length); + lseg = send_layoutget(lo, ctx, &arg, gfp_flags); if (!lseg && first) { spin_lock(&clp->cl_lock);