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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0616BC4332F for ; Thu, 21 Oct 2021 12:45:03 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id AD8506121E for ; Thu, 21 Oct 2021 12:45:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org AD8506121E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 458A26B0075; Thu, 21 Oct 2021 08:45:02 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 3E1726B0078; Thu, 21 Oct 2021 08:45:02 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2334A6B007B; Thu, 21 Oct 2021 08:45:02 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0200.hostedemail.com [216.40.44.200]) by kanga.kvack.org (Postfix) with ESMTP id 11D806B0075 for ; Thu, 21 Oct 2021 08:45:02 -0400 (EDT) Received: from smtpin27.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id B93F58249980 for ; Thu, 21 Oct 2021 12:45:01 +0000 (UTC) X-FDA: 78720414402.27.D73FDA7 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf06.hostedemail.com (Postfix) with ESMTP id 86334801A8A7 for ; Thu, 21 Oct 2021 12:45:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=acZg4wkuvbE9IZmYXfy6RNvUK0RdFUpI4ihnDw7DO/4=; b=23/nBcxqvr25HYTCsBEfXIijFk ELgOpFDemlWuE6yzeZPeI0cnUS3BlCWJ7gtrwjSBYNFmYaGpGrFHVfx8FMCx4FPSQIToNuyvdbWed o9ZDZhZeIIC6vkJqkQbYK55S5jFnixaZIV4qWd/2YKxKWiXtxH3agwhjPr0ksDmwd7RslsfNgE1sr KCBIsRHSv7ZyUmupZ1WGDM8aw1gn7tVAwaq6rPCOADkcaBVK40wCuRKELz+/Up/SRLMIRPoDAffjc /L+pCNsJ2JohFC1GSFMiQJhGDeTJw5Zjml93VDjKBFmW6BWCnDSUb6KmRWaUvzn6PzXolaDiYR/9d 9wHc6NvA==; Received: from [2001:4bb8:180:8777:dd70:8011:36d9:4c23] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1mdXRI-007X0C-RZ; Thu, 21 Oct 2021 12:44:57 +0000 From: Christoph Hellwig To: Andrew Morton Cc: Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Jan Kara , linux-mtd@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 4/5] mm: don't automatically unregister bdis Date: Thu, 21 Oct 2021 14:44:40 +0200 Message-Id: <20211021124441.668816-5-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211021124441.668816-1-hch@lst.de> References: <20211021124441.668816-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 86334801A8A7 X-Stat-Signature: rp53h7yqjaw5kqqbythz678hekuspj4n Authentication-Results: imf06.hostedemail.com; dkim=pass header.d=infradead.org header.s=bombadil.20210309 header.b="23/nBcxq"; dmarc=none; spf=none (imf06.hostedemail.com: domain of BATV+f538400d2eeb65ed2b85+6633+infradead.org+hch@bombadil.srs.infradead.org has no SPF policy when checking 198.137.202.133) smtp.mailfrom=BATV+f538400d2eeb65ed2b85+6633+infradead.org+hch@bombadil.srs.infradead.org X-HE-Tag: 1634820300-658520 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: All BDI users now unregister explicitly. Signed-off-by: Christoph Hellwig --- mm/backing-dev.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 8a46a0a4b72fa..768e9ae489f66 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -965,8 +965,7 @@ static void release_bdi(struct kref *ref) struct backing_dev_info *bdi =3D container_of(ref, struct backing_dev_info, refcnt); =20 - if (test_bit(WB_registered, &bdi->wb.state)) - bdi_unregister(bdi); + WARN_ON_ONCE(test_bit(WB_registered, &bdi->wb.state)); WARN_ON_ONCE(bdi->dev); wb_exit(&bdi->wb); kfree(bdi); --=20 2.30.2