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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 17B1AC433E0 for ; Mon, 29 Jun 2020 21:51:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E9822206A5 for ; Mon, 29 Jun 2020 21:51:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593467492; bh=CEb9o2yL5eEnwlfJtCGk5Cdd+bLozxsyRisthU6Vmsg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=m3lCIf7bzp6pDL6fF5vP2qqe+0725+z72osi6v6qUGXrtiAMmXYGqbfOUkYyizcjz AxTzIMd/EdveG3jmGcFP4WirXNjeRZsHcSavejAGxP6NQGUg7hGLoBUP9oO82cWcy+ m/q89tmfvf0zLlwflqv3UVFohF73nW1LAIfDzqlI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732927AbgF2Vva (ORCPT ); Mon, 29 Jun 2020 17:51:30 -0400 Received: from mail.kernel.org ([198.145.29.99]:56792 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726654AbgF2Sfk (ORCPT ); Mon, 29 Jun 2020 14:35:40 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B463F2478A; Mon, 29 Jun 2020 15:21:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593444095; bh=CEb9o2yL5eEnwlfJtCGk5Cdd+bLozxsyRisthU6Vmsg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qaI7LPFVhNFkUEpWNdD82O+Rm4inYFouZxto82BSnMuDBosRkmqcxqX5aHJ/5m+ho h5Tp92dbqb4BPugllruFoUxUbrcLCPTZt0Wd0EdC+nJsA5SvFQ8E9ux+Ky/cLMlSxx G3RvA9gtBQiY7GTtDjc4JOWaIvOoN1frAIA/K04c= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Vishal Verma , Dan Williams , Sasha Levin Subject: [PATCH 5.7 205/265] nvdimm/region: always show the 'align' attribute Date: Mon, 29 Jun 2020 11:17:18 -0400 Message-Id: <20200629151818.2493727-206-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200629151818.2493727-1-sashal@kernel.org> References: <20200629151818.2493727-1-sashal@kernel.org> MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.7.7-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-5.7.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 5.7.7-rc1 X-KernelTest-Deadline: 2020-07-01T15:14+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Vishal Verma [ Upstream commit 543094e19c82b5d171e139d09a1a3ea0a7361117 ] It is possible that a platform that is capable of 'namespace labels' comes up without the labels properly initialized. In this case, the region's 'align' attribute is hidden. Howerver, once the user does initialize he labels, the 'align' attribute still stays hidden, which is unexpected. The sysfs_update_group() API is meant to address this, and could be called during region probe, but it has entanglements with the device 'lockdep_mutex'. Therefore, simply make the 'align' attribute always visible. It doesn't matter what it says for label-less namespaces, since it is not possible to change their allocation anyway. Suggested-by: Dan Williams Signed-off-by: Vishal Verma Cc: Dan Williams Link: https://lore.kernel.org/r/20200520225026.29426-1-vishal.l.verma@intel.com Signed-off-by: Dan Williams Signed-off-by: Sasha Levin --- drivers/nvdimm/region_devs.c | 14 ++------------ 1 file changed, 2 insertions(+), 12 deletions(-) diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c index ccbb5b43b8b2c..4502f9c4708d0 100644 --- a/drivers/nvdimm/region_devs.c +++ b/drivers/nvdimm/region_devs.c @@ -679,18 +679,8 @@ static umode_t region_visible(struct kobject *kobj, struct attribute *a, int n) return a->mode; } - if (a == &dev_attr_align.attr) { - int i; - - for (i = 0; i < nd_region->ndr_mappings; i++) { - struct nd_mapping *nd_mapping = &nd_region->mapping[i]; - struct nvdimm *nvdimm = nd_mapping->nvdimm; - - if (test_bit(NDD_LABELING, &nvdimm->flags)) - return a->mode; - } - return 0; - } + if (a == &dev_attr_align.attr) + return a->mode; if (a != &dev_attr_set_cookie.attr && a != &dev_attr_available_size.attr) -- 2.25.1