From mboxrd@z Thu Jan 1 00:00:00 1970 From: Artem Bityutskiy Subject: [RFC][PATCH 01/16] writeback: do not self-wakeup Date: Fri, 16 Jul 2010 15:44:57 +0300 Message-ID: <1279284312-2411-2-git-send-email-dedekind1@gmail.com> References: <1279284312-2411-1-git-send-email-dedekind1@gmail.com> Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org To: Jens Axboe Return-path: Received: from smtp.nokia.com ([192.100.122.230]:40005 "EHLO mgw-mx03.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965399Ab0GPMtN (ORCPT ); Fri, 16 Jul 2010 08:49:13 -0400 In-Reply-To: <1279284312-2411-1-git-send-email-dedekind1@gmail.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: From: Artem Bityutskiy The bdi forker thread wakes up itself via 'bdi_add_to_pending()'. And the thread is the only user of 'bdi_add_to_pending()'. Thus, we can safely zap the unneeded 'wake_up_process()' call. Signed-off-by: Artem Bityutskiy --- mm/backing-dev.c | 6 ------ 1 files changed, 0 insertions(+), 6 deletions(-) diff --git a/mm/backing-dev.c b/mm/backing-dev.c index ac78a33..ff5669a 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -421,12 +421,6 @@ static void bdi_add_to_pending(struct rcu_head *head) spin_lock(&bdi_lock); list_add_tail(&bdi->bdi_list, &bdi_pending_list); spin_unlock(&bdi_lock); - - /* - * We are now on the pending list, wake up bdi_forker_task() - * to finish the job and add us back to the active bdi_list - */ - wake_up_process(default_backing_dev_info.wb.task); } /* -- 1.7.1.1