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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 6AF70C433DB for ; Mon, 28 Dec 2020 13:12:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3410122AEC for ; Mon, 28 Dec 2020 13:12:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731871AbgL1NLw (ORCPT ); Mon, 28 Dec 2020 08:11:52 -0500 Received: from mail.kernel.org ([198.145.29.99]:39148 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731617AbgL1NLO (ORCPT ); Mon, 28 Dec 2020 08:11:14 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id F11B520728; Mon, 28 Dec 2020 13:10:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1609161033; bh=nMf3gnOx6eJxxED5MzzNT844IXb6sTEqjQRbZaVsyUs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DF4rKMx2gs7Eq55bVKYcGiUg/1gGgRNTrozKBjnRaRvaq9DCT59yzKgFMQ6aFH9pA zzb56glHHe79PNyOrk7cKE7dt5QuOl2cFyI6Dhw+6MLG/yDy4bEpTzpg/hbFJ9XJhA 5yNvrYwqjgAE3mDpRCUpszoql/jZ5xI+rWMw7gh4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Thomas Gleixner , Sebastian Andrzej Siewior , Mike Snitzer , Sasha Levin Subject: [PATCH 4.14 047/242] dm table: Remove BUG_ON(in_interrupt()) Date: Mon, 28 Dec 2020 13:47:32 +0100 Message-Id: <20201228124906.996140747@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201228124904.654293249@linuxfoundation.org> References: <20201228124904.654293249@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Thomas Gleixner [ Upstream commit e7b624183d921b49ef0a96329f21647d38865ee9 ] The BUG_ON(in_interrupt()) in dm_table_event() is a historic leftover from a rework of the dm table code which changed the calling context. Issuing a BUG for a wrong calling context is frowned upon and in_interrupt() is deprecated and only covering parts of the wrong contexts. The sanity check for the context is covered by CONFIG_DEBUG_ATOMIC_SLEEP and other debug facilities already. Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Mike Snitzer Signed-off-by: Sasha Levin --- drivers/md/dm-table.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 777343cff5f1e..78d4e7347e2f3 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1295,12 +1295,6 @@ void dm_table_event_callback(struct dm_table *t, void dm_table_event(struct dm_table *t) { - /* - * You can no longer call dm_table_event() from interrupt - * context, use a bottom half instead. - */ - BUG_ON(in_interrupt()); - mutex_lock(&_event_lock); if (t->event_fn) t->event_fn(t->event_context); -- 2.27.0