Return-Path: linux-nfs-owner@vger.kernel.org Received: from mx2.netapp.com ([216.240.18.37]:34178 "EHLO mx2.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932158Ab2DTSgx (ORCPT ); Fri, 20 Apr 2012 14:36:53 -0400 From: Fred Isaman To: linux-nfs@vger.kernel.org Cc: Trond Myklebust Subject: [PATCH v2 26/28] NFS: avoid some stat gathering for direct io Date: Fri, 20 Apr 2012 14:36:08 -0400 Message-Id: <1334946970-27470-27-git-send-email-iisaman@netapp.com> In-Reply-To: <1334946970-27470-1-git-send-email-iisaman@netapp.com> References: <1334946970-27470-1-git-send-email-iisaman@netapp.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: Signed-off-by: Fred Isaman --- fs/nfs/write.c | 18 ++++++++++++------ 1 files changed, 12 insertions(+), 6 deletions(-) diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 44a93d8..56db9e7 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -472,9 +472,13 @@ nfs_request_add_commit_list(struct nfs_page *req, struct list_head *dst, nfs_list_add_request(req, dst); cinfo->mds->ncommit++; spin_unlock(cinfo->lock); - inc_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); - inc_bdi_stat(req->wb_page->mapping->backing_dev_info, BDI_RECLAIMABLE); - __mark_inode_dirty(req->wb_context->dentry->d_inode, I_DIRTY_DATASYNC); + if (!cinfo->dreq) { + inc_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); + inc_bdi_stat(req->wb_page->mapping->backing_dev_info, + BDI_RECLAIMABLE); + __mark_inode_dirty(req->wb_context->dentry->d_inode, + I_DIRTY_DATASYNC); + } } EXPORT_SYMBOL_GPL(nfs_request_add_commit_list); @@ -1455,9 +1459,11 @@ void nfs_retry_commit(struct list_head *page_list, req = nfs_list_entry(page_list->next); nfs_list_remove_request(req); nfs_mark_request_commit(req, lseg, cinfo); - dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); - dec_bdi_stat(req->wb_page->mapping->backing_dev_info, - BDI_RECLAIMABLE); + if (!cinfo->dreq) { + dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); + dec_bdi_stat(req->wb_page->mapping->backing_dev_info, + BDI_RECLAIMABLE); + } nfs_unlock_request(req); } } -- 1.7.2.1