From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wu Fengguang Subject: Re: [PATCH 03/12] writeback: remove unused nonblocking and congestion checks (pohmelfs) Date: Thu, 19 Nov 2009 16:11:54 +0800 Message-ID: <20091119081154.GE5922@localhost> References: <20091118082648.140755818@intel.com> <20091118082845.828021716@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: "linux-fsdevel@vger.kernel.org" , LKML To: Evgeniy Polyakov , Andrew Morton , Jens Axboe Return-path: Content-Disposition: inline In-Reply-To: <20091118082845.828021716@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Hi Evgeniy, Will you pick up this updated patch? It also removes the unused bdi. Thanks, Fengguang --- writeback: remove unused nonblocking and congestion checks (pohmelfs) No one is calling wb_writeback and write_cache_pages with wbc.nonblocking=1 any more. And lumpy pageout will want to do nonblocking writeback without the congestion wait. CC: Evgeniy Polyakov Signed-off-by: Wu Fengguang --- drivers/staging/pohmelfs/inode.c | 10 ---------- 1 file changed, 10 deletions(-) --- linux.orig/drivers/staging/pohmelfs/inode.c 2009-11-18 16:39:36.000000000 +0800 +++ linux/drivers/staging/pohmelfs/inode.c 2009-11-19 16:10:29.000000000 +0800 @@ -143,7 +143,6 @@ static int pohmelfs_writepages(struct ad struct inode *inode = mapping->host; struct pohmelfs_inode *pi = POHMELFS_I(inode); struct pohmelfs_sb *psb = POHMELFS_SB(inode->i_sb); - struct backing_dev_info *bdi = mapping->backing_dev_info; int err = 0; int done = 0; int nr_pages; @@ -152,11 +151,6 @@ static int pohmelfs_writepages(struct ad int scanned = 0; int range_whole = 0; - if (wbc->nonblocking && bdi_write_congested(bdi)) { - wbc->encountered_congestion = 1; - return 0; - } - if (wbc->range_cyclic) { index = mapping->writeback_index; /* Start from prev offset */ end = -1; @@ -248,10 +242,6 @@ retry: if (wbc->nr_to_write <= 0) done = 1; - if (wbc->nonblocking && bdi_write_congested(bdi)) { - wbc->encountered_congestion = 1; - done = 1; - } continue; out_continue: