Return-Path: Received: from daytona.panasas.com ([67.152.220.89]:50816 "EHLO daytona.panasas.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755246Ab1E2SUR (ORCPT ); Sun, 29 May 2011 14:20:17 -0400 From: Boaz Harrosh To: Trond Myklebust , Benny Halevy , NFS list , open-osd Cc: Benny Halevy Subject: [PATCH 10/32] pnfs: align layoutget requests on page boundaries Date: Sun, 29 May 2011 21:20:06 +0300 Message-Id: <1306693206-7983-1-git-send-email-bharrosh@panasas.com> In-Reply-To: <4DE28CFB.4060608@panasas.com> References: <4DE28CFB.4060608@panasas.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: Content-Type: text/plain MIME-Version: 1.0 From: Benny Halevy 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); -- 1.7.2.3