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 X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B9858C47254 for ; Fri, 1 May 2020 02:55:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 98991207DD for ; Fri, 1 May 2020 02:55:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588301731; bh=EJ8aoDFzKNv9sq3gvBCC3pOSDsXlq+pz29uU4+G/KDc=; h=Date:From:To:To:Cc:Cc:Cc:Cc:Cc:Cc:Cc:Cc:Cc:Cc:Subject:In-Reply-To: References:List-ID:From; b=Gq7om2+iXio3h1kLeHKto2lZA7TXNn6dTENU8XBb5vT9zOQgZOr/os8oKZsu3jFxi haP0OZVasTiaqs/eKX+V/CTgnB/d99RkMEoPk4Ko9fU8KsNFbE58A5bc4hP+N/loBh J+AkBih7MCE6D1BGKOSy7lEW5/jx/WY5ihvNSpY4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728182AbgEACzb (ORCPT ); Thu, 30 Apr 2020 22:55:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:60532 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728173AbgEACza (ORCPT ); Thu, 30 Apr 2020 22:55:30 -0400 Received: from localhost (unknown [137.135.114.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D447A20836; Fri, 1 May 2020 02:55:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588301730; bh=EJ8aoDFzKNv9sq3gvBCC3pOSDsXlq+pz29uU4+G/KDc=; h=Date:From:To:To:Cc:Cc:Cc:Cc:Cc:Cc:Cc:Cc:Cc:Cc:Subject:In-Reply-To: References:From; b=w9VHWVn4hFghdtPcOtle16pjfFBGQz0aNJJwJvLbBmnpCsGHZAfgojhCL023+mbUb 7vBv2ATiGIktdujvXRzISI0B5NJ7lQMaJ1UZE4NI9+WQjeShlQR7j5/4Kkb9U5RmmG +Bvwn9mtOGXnA89aE/j3JiyJRne5ZQTe3XHEa4X4= Date: Fri, 01 May 2020 02:55:29 +0000 From: Sasha Levin To: Sasha Levin To: Roman Penyaev Cc: Roman Penyaev Cc: Andrew Morton Cc: Khazhismel Kumykov Cc: Alexander Viro Cc: Heiher Cc: Jason Baron Cc: stable@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org Subject: Re: [PATCH 2/2] epoll: atomically remove wait entry on wake up In-Reply-To: <20200430130326.1368509-2-rpenyaev@suse.de> References: <20200430130326.1368509-2-rpenyaev@suse.de> Message-Id: <20200501025529.D447A20836@mail.kernel.org> Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org Hi [This is an automated email] This commit has been processed because it contains a -stable tag. The stable tag indicates that it's relevant for the following trees: all The bot has tested the following trees: v5.6.7, v5.4.35, v4.19.118, v4.14.177, v4.9.220, v4.4.220. v5.6.7: Build OK! v5.4.35: Build OK! v4.19.118: Failed to apply! Possible dependencies: 1b53734bd0b2 ("epoll: fix possible lost wakeup on epoll_ctl() path") 35cff1a6e023 ("fs/epoll: rename check_events label to send_events") 86c051793b4c ("fs/epoll: deal with wait_queue only once") abc610e01c66 ("fs/epoll: avoid barrier after an epoll_wait(2) timeout") c5a282e9635e ("fs/epoll: reduce the scope of wq lock in epoll_wait()") v4.14.177: Failed to apply! Possible dependencies: 002b343669c4 ("fs/epoll: loosen irq safety in ep_scan_ready_list()") 35cff1a6e023 ("fs/epoll: rename check_events label to send_events") 37b5e5212a44 ("epoll: remove ep_call_nested() from ep_eventpoll_poll()") 679abf381a18 ("fs/eventpoll.c: loosen irq safety in ep_poll()") 69112736e2f0 ("eventpoll: no need to mask the result of epi_item_poll() again") 86c051793b4c ("fs/epoll: deal with wait_queue only once") bec1a502d34d ("eventpoll: constify struct epoll_event pointers") c5a282e9635e ("fs/epoll: reduce the scope of wq lock in epoll_wait()") d85e2aa2e34d ("annotate ep_scan_ready_list()") ee8ef0a4b167 ("epoll: use the waitqueue lock to protect ep->wq") v4.9.220: Failed to apply! Possible dependencies: 86c051793b4c ("fs/epoll: deal with wait_queue only once") 89d947561077 ("sd: Implement support for ZBC devices") ac6424b981bc ("sched/wait: Rename wait_queue_t => wait_queue_entry_t") bd166ef183c2 ("blk-mq-sched: add framework for MQ capable IO schedulers") cf43e6be865a ("block: add scalable completion tracking of requests") e806402130c9 ("block: split out request-only flags into a new namespace") v4.4.220: Failed to apply! Possible dependencies: 27489a3c827b ("blk-mq: turn hctx->run_work into a regular work struct") 511cbce2ff8b ("irq_poll: make blk-iopoll available outside the block layer") 86c051793b4c ("fs/epoll: deal with wait_queue only once") 8d354f133e86 ("blk-mq: improve layout of blk_mq_hw_ctx") 9467f85960a3 ("blk-mq/cpu-notif: Convert to new hotplug state machine") ac6424b981bc ("sched/wait: Rename wait_queue_t => wait_queue_entry_t") bd166ef183c2 ("blk-mq-sched: add framework for MQ capable IO schedulers") cf43e6be865a ("block: add scalable completion tracking of requests") d9d8c5c489f4 ("block: convert is_sync helpers to use REQ_OPs.") da8b44d5a9f8 ("timer: convert timer_slack_ns from unsigned long to u64") e57690fe009b ("blk-mq: don't overwrite rq->mq_ctx") e6a40b096e28 ("block: prepare request creation/destruction code to use REQ_OPs") e806402130c9 ("block: split out request-only flags into a new namespace") NOTE: The patch will not be queued to stable trees until it is upstream. How should we proceed with this patch? -- Thanks Sasha