From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 00B672E5418; Tue, 8 Jul 2025 16:34:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751992446; cv=none; b=Gq6h/zBuyMtrKfqF9biHp+xuehJ7frudPe9SjysiwmTxmL05zFRVS5Zv4lUiiB8GoGV3iW3yfNOOuB5B2g50Z6dNbJuar2qhr7jmQu7ZW5BcPiWMD9xXhyjHsYmCTucyeNk3hKhQQ9XdmJdeT7D6ZqUlUe4U5PCXJoFg84uPEOE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751992446; c=relaxed/simple; bh=zXTLyPXkulKbNiAA26oaalGOc/Q1ftNeE+f9VCb17PI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rIY2aa5c+I/vQ4UrNWmzjqDIpAeOj4Khyng+UXZsp6CvKHd+0sZ6NJBWIRMjYwKp94GXt08lJjPXu8baaySV94soNw2nE5FkkWqNFuVHUfkzalpJvviRdJ3ap1KhCgaGBnKAP5negJqZu3NjzY40ZL4pgaT1n/D3arTfbw8Mv34= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=UQB//rOv; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="UQB//rOv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1F598C4CEED; Tue, 8 Jul 2025 16:34:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1751992445; bh=zXTLyPXkulKbNiAA26oaalGOc/Q1ftNeE+f9VCb17PI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UQB//rOvkI7kpvst8KJwQHFmK2RtxnuR9S0DV9QgIhYuEsWwI7V6NUFETxBD1pp0k bJYbxrYhFUHRdrl7zbVyYuRlBgZPbBJ9f4HLc7d0gPvJ8H1hFNya+AgW7qZkfK8ZJG MAEAAyh1NtluI74n8uO5tqwbglV9P9J30P2zQ0wU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Justin Sanders , Valentin Kleibel , Jens Axboe , Sasha Levin Subject: [PATCH 6.6 094/132] aoe: defer rexmit timer downdev work to workqueue Date: Tue, 8 Jul 2025 18:23:25 +0200 Message-ID: <20250708162233.366877694@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250708162230.765762963@linuxfoundation.org> References: <20250708162230.765762963@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Justin Sanders [ Upstream commit cffc873d68ab09a0432b8212008c5613f8a70a2c ] When aoe's rexmit_timer() notices that an aoe target fails to respond to commands for more than aoe_deadsecs, it calls aoedev_downdev() which cleans the outstanding aoe and block queues. This can involve sleeping, such as in blk_mq_freeze_queue(), which should not occur in irq context. This patch defers that aoedev_downdev() call to the aoe device's workqueue. Link: https://bugzilla.kernel.org/show_bug.cgi?id=212665 Signed-off-by: Justin Sanders Link: https://lore.kernel.org/r/20250610170600.869-2-jsanders.devel@gmail.com Tested-By: Valentin Kleibel Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- drivers/block/aoe/aoe.h | 1 + drivers/block/aoe/aoecmd.c | 8 ++++++-- drivers/block/aoe/aoedev.c | 5 ++++- 3 files changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h index 749ae1246f4cf..d35caa3c69e15 100644 --- a/drivers/block/aoe/aoe.h +++ b/drivers/block/aoe/aoe.h @@ -80,6 +80,7 @@ enum { DEVFL_NEWSIZE = (1<<6), /* need to update dev size in block layer */ DEVFL_FREEING = (1<<7), /* set when device is being cleaned up */ DEVFL_FREED = (1<<8), /* device has been cleaned up */ + DEVFL_DEAD = (1<<9), /* device has timed out of aoe_deadsecs */ }; enum { diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c index d1f4ddc576451..c4c5cf1ec71ba 100644 --- a/drivers/block/aoe/aoecmd.c +++ b/drivers/block/aoe/aoecmd.c @@ -754,7 +754,7 @@ rexmit_timer(struct timer_list *timer) utgts = count_targets(d, NULL); - if (d->flags & DEVFL_TKILL) { + if (d->flags & (DEVFL_TKILL | DEVFL_DEAD)) { spin_unlock_irqrestore(&d->lock, flags); return; } @@ -786,7 +786,8 @@ rexmit_timer(struct timer_list *timer) * to clean up. */ list_splice(&flist, &d->factive[0]); - aoedev_downdev(d); + d->flags |= DEVFL_DEAD; + queue_work(aoe_wq, &d->work); goto out; } @@ -898,6 +899,9 @@ aoecmd_sleepwork(struct work_struct *work) { struct aoedev *d = container_of(work, struct aoedev, work); + if (d->flags & DEVFL_DEAD) + aoedev_downdev(d); + if (d->flags & DEVFL_GDALLOC) aoeblk_gdalloc(d); diff --git a/drivers/block/aoe/aoedev.c b/drivers/block/aoe/aoedev.c index 280679bde3a50..4240e11adfb76 100644 --- a/drivers/block/aoe/aoedev.c +++ b/drivers/block/aoe/aoedev.c @@ -200,8 +200,11 @@ aoedev_downdev(struct aoedev *d) struct list_head *head, *pos, *nx; struct request *rq, *rqnext; int i; + unsigned long flags; - d->flags &= ~DEVFL_UP; + spin_lock_irqsave(&d->lock, flags); + d->flags &= ~(DEVFL_UP | DEVFL_DEAD); + spin_unlock_irqrestore(&d->lock, flags); /* clean out active and to-be-retransmitted buffers */ for (i = 0; i < NFACTIVE; i++) { -- 2.39.5