From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3849FC4321E for ; Fri, 4 Nov 2022 05:57:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231272AbiKDF5X convert rfc822-to-8bit (ORCPT ); Fri, 4 Nov 2022 01:57:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36464 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231761AbiKDF47 (ORCPT ); Fri, 4 Nov 2022 01:56:59 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 07E3729342; Thu, 3 Nov 2022 22:56:40 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id C572EB82BE8; Fri, 4 Nov 2022 05:56:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 00F7FC433C1; Fri, 4 Nov 2022 05:56:36 +0000 (UTC) Date: Fri, 4 Nov 2022 01:56:35 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Linus Torvalds , Thomas Gleixner , Stephen Boyd , Guenter Roeck , Anna-Maria Gleixner , Andrew Morton , Philipp Reisner , Lars Ellenberg , Christoph =?UTF-8?B?QsO2aG13YWxkZXI=?= , Jens Axboe , drbd-dev@lists.linbit.com, Tejun Heo , cgroups@vger.kernel.org, linux-block@vger.kernel.org Subject: Re: [RFC][PATCH v3 04/33] timers: block: Use timer_shutdown_sync() before freeing timer Message-ID: <20221104015635.66243b5b@rorschach.local.home> In-Reply-To: <20221104054912.617055044@goodmis.org> References: <20221104054053.431922658@goodmis.org> <20221104054912.617055044@goodmis.org> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org [ Once again, quilt fails the MIME coding ] From: "Steven Rostedt (Google)" Before a timer is freed, timer_shutdown_sync() must be called. Link: https://lore.kernel.org/all/20220407161745.7d6754b3@gandalf.local.home/ Cc: Philipp Reisner Cc: Lars Ellenberg Cc: "Christoph Böhmwalder" Cc: Jens Axboe Cc: drbd-dev@lists.linbit.com Cc: Tejun Heo Cc: cgroups@vger.kernel.org Cc: linux-block@vger.kernel.org Signed-off-by: Steven Rostedt (Google) --- block/blk-iocost.c | 2 +- block/blk-iolatency.c | 2 +- block/blk-stat.c | 2 +- block/blk-throttle.c | 2 +- block/kyber-iosched.c | 2 +- drivers/block/drbd/drbd_main.c | 2 +- drivers/block/loop.c | 2 +- drivers/block/sunvdc.c | 2 +- 8 files changed, 8 insertions(+), 8 deletions(-) diff --git a/block/blk-iocost.c b/block/blk-iocost.c index 495396425bad..7edc695b3a3d 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -2814,7 +2814,7 @@ static void ioc_rqos_exit(struct rq_qos *rqos) ioc->running = IOC_STOP; spin_unlock_irq(&ioc->lock); - del_timer_sync(&ioc->timer); + timer_shutdown_sync(&ioc->timer); free_percpu(ioc->pcpu_stat); kfree(ioc); } diff --git a/block/blk-iolatency.c b/block/blk-iolatency.c index 571fa95aafe9..c7049ab18312 100644 --- a/block/blk-iolatency.c +++ b/block/blk-iolatency.c @@ -645,7 +645,7 @@ static void blkcg_iolatency_exit(struct rq_qos *rqos) { struct blk_iolatency *blkiolat = BLKIOLATENCY(rqos); - del_timer_sync(&blkiolat->timer); + timer_shutdown_sync(&blkiolat->timer); flush_work(&blkiolat->enable_work); blkcg_deactivate_policy(rqos->q, &blkcg_policy_iolatency); kfree(blkiolat); diff --git a/block/blk-stat.c b/block/blk-stat.c index 2ea01b5c1aca..855da21de5dc 100644 --- a/block/blk-stat.c +++ b/block/blk-stat.c @@ -165,7 +165,7 @@ void blk_stat_remove_callback(struct request_queue *q, blk_queue_flag_clear(QUEUE_FLAG_STATS, q); spin_unlock_irqrestore(&q->stats->lock, flags); - del_timer_sync(&cb->timer); + timer_shutdown_sync(&cb->timer); } static void blk_stat_free_callback_rcu(struct rcu_head *head) diff --git a/block/blk-throttle.c b/block/blk-throttle.c index 847721dc2b2b..38740c4f517a 100644 --- a/block/blk-throttle.c +++ b/block/blk-throttle.c @@ -490,7 +490,7 @@ static void throtl_pd_free(struct blkg_policy_data *pd) { struct throtl_grp *tg = pd_to_tg(pd); - del_timer_sync(&tg->service_queue.pending_timer); + timer_shutdown_sync(&tg->service_queue.pending_timer); blkg_rwstat_exit(&tg->stat_bytes); blkg_rwstat_exit(&tg->stat_ios); kfree(tg); diff --git a/block/kyber-iosched.c b/block/kyber-iosched.c index b05357bced99..2146969237bf 100644 --- a/block/kyber-iosched.c +++ b/block/kyber-iosched.c @@ -434,7 +434,7 @@ static void kyber_exit_sched(struct elevator_queue *e) struct kyber_queue_data *kqd = e->elevator_data; int i; - del_timer_sync(&kqd->timer); + timer_shutdown_sync(&kqd->timer); blk_stat_disable_accounting(kqd->q); for (i = 0; i < KYBER_NUM_DOMAINS; i++) diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index f3e4db16fd07..2dc5be89a001 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -2184,7 +2184,7 @@ void drbd_destroy_device(struct kref *kref) struct drbd_resource *resource = device->resource; struct drbd_peer_device *peer_device, *tmp_peer_device; - del_timer_sync(&device->request_timer); + timer_shutdown_sync(&device->request_timer); /* paranoia asserts */ D_ASSERT(device, device->open_cnt == 0); diff --git a/drivers/block/loop.c b/drivers/block/loop.c index ad92192c7d61..3ea087cd1f99 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -1755,7 +1755,7 @@ static void lo_free_disk(struct gendisk *disk) if (lo->workqueue) destroy_workqueue(lo->workqueue); loop_free_idle_workers(lo, true); - del_timer_sync(&lo->timer); + timer_shutdown_sync(&lo->timer); mutex_destroy(&lo->lo_mutex); kfree(lo); } diff --git a/drivers/block/sunvdc.c b/drivers/block/sunvdc.c index fb855da971ee..e14fe5d968d8 100644 --- a/drivers/block/sunvdc.c +++ b/drivers/block/sunvdc.c @@ -1067,7 +1067,7 @@ static void vdc_port_remove(struct vio_dev *vdev) flush_work(&port->ldc_reset_work); cancel_delayed_work_sync(&port->ldc_reset_timer_work); - del_timer_sync(&port->vio.timer); + timer_shutdown_sync(&port->vio.timer); del_gendisk(port->disk); put_disk(port->disk); -- 2.35.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Rostedt Subject: Re: [RFC][PATCH v3 04/33] timers: block: Use timer_shutdown_sync() before freeing timer Date: Fri, 4 Nov 2022 01:56:35 -0400 Message-ID: <20221104015635.66243b5b@rorschach.local.home> References: <20221104054053.431922658@goodmis.org> <20221104054912.617055044@goodmis.org> Mime-Version: 1.0 Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20221104054912.617055044-nx8X9YLhiw1AfugRpC6u6w@public.gmane.org> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: drbd-dev-bounces-cunTk1MwBs8qoQakbn7OcQ@public.gmane.org Errors-To: drbd-dev-bounces-cunTk1MwBs8qoQakbn7OcQ@public.gmane.org Content-Type: text/plain; charset="iso-8859-1" To: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Jens Axboe , Stephen Boyd , Linus Torvalds , Philipp Reisner , linux-block-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Lars Ellenberg , Tejun Heo , cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Thomas Gleixner , Anna-Maria Gleixner , Andrew Morton , Guenter Roeck , drbd-dev-cunTk1MwBs8qoQakbn7OcQ@public.gmane.org WyBPbmNlIGFnYWluLCBxdWlsdCBmYWlscyB0aGUgTUlNRSBjb2RpbmcgXQoKRnJvbTogIlN0ZXZl biBSb3N0ZWR0IChHb29nbGUpIiA8cm9zdGVkdEBnb29kbWlzLm9yZz4KCkJlZm9yZSBhIHRpbWVy IGlzIGZyZWVkLCB0aW1lcl9zaHV0ZG93bl9zeW5jKCkgbXVzdCBiZSBjYWxsZWQuCgpMaW5rOiBo dHRwczovL2xvcmUua2VybmVsLm9yZy9hbGwvMjAyMjA0MDcxNjE3NDUuN2Q2NzU0YjNAZ2FuZGFs Zi5sb2NhbC5ob21lLwoKQ2M6IFBoaWxpcHAgUmVpc25lciA8cGhpbGlwcC5yZWlzbmVyQGxpbmJp dC5jb20+CkNjOiBMYXJzIEVsbGVuYmVyZyA8bGFycy5lbGxlbmJlcmdAbGluYml0LmNvbT4KQ2M6 ICJDaHJpc3RvcGggQsO2aG13YWxkZXIiIDxjaHJpc3RvcGguYm9laG13YWxkZXJAbGluYml0LmNv bT4KQ2M6IEplbnMgQXhib2UgPGF4Ym9lQGtlcm5lbC5kaz4KQ2M6IGRyYmQtZGV2QGxpc3RzLmxp 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