Return-Path: linux-nfs-owner@vger.kernel.org Received: from mx2.netapp.com ([216.240.18.37]:8749 "EHLO mx2.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932497Ab2JCXIr (ORCPT ); Wed, 3 Oct 2012 19:08:47 -0400 From: Fred Isaman To: linux-nfs@vger.kernel.org Cc: Trond Myklebust Subject: [PATCH 1/1] NFS: dont revalidate the inode when using local locks Date: Wed, 3 Oct 2012 19:08:44 -0400 Message-Id: <1349305724-28173-1-git-send-email-iisaman@netapp.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: This drastically improves performance when using lock-heavy workloads that are amenable to using local locks. Signed-off-by: Fred Isaman --- fs/nfs/file.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/fs/nfs/file.c b/fs/nfs/file.c index a6708e6..fd0155f 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -765,7 +765,7 @@ do_setlk(struct file *filp, int cmd, struct file_lock *fl, int is_local) * This makes locking act as a cache coherency point. */ nfs_sync_mapping(filp->f_mapping); - if (!nfs_have_delegation(inode, FMODE_READ)) { + if ((!is_local) && !nfs_have_delegation(inode, FMODE_READ)) { if (is_time_granular(&NFS_SERVER(inode)->time_delta)) __nfs_revalidate_inode(NFS_SERVER(inode), inode); else -- 1.7.1