From mboxrd@z Thu Jan 1 00:00:00 1970 From: Romit Dasgupta Subject: [PATCH 1/1]: Thaws refrigerated bdi flusher threads before invoking kthread_stop on them Date: Wed, 11 Nov 2009 14:00:16 +0530 Message-ID: <1257928216.15415.57.camel@boson> Reply-To: romit@ti.com Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Sender: linux-kernel-owner@vger.kernel.org To: jens.axboe@oracle.com, rjw@sisk.pl, pavel@ucw.cz Cc: linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-pm@lists.linux-foundation.org List-Id: linux-omap@vger.kernel.org Kicks out frozen bdi flusher task out of the refrigerator when the flusher task needs to exit. Signed-off-by: Romit Dasgupta --- diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 5a37e20..c757b05 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -606,8 +606,11 @@ static void bdi_wb_shutdown(struct backing_dev_info *bdi) * Finally, kill the kernel threads. We don't need to be RCU * safe anymore, since the bdi is gone from visibility. */ - list_for_each_entry(wb, &bdi->wb_list, list) + list_for_each_entry(wb, &bdi->wb_list, list) { + if (unlikely(frozen(wb->task))) + wb->task->flags &= ~PF_FROZEN; kthread_stop(wb->task); + } } void bdi_unregister(struct backing_dev_info *bdi)