Message ID | 20201009195033.3208459-57-ira.weiny@intel.com |
---|---|
State | Not Applicable |
Headers | show
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Fri, 09 Oct 2020 20:02:28 +0000 Received: from mga07.intel.com ([134.134.136.100]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQyUA-0002ns-M8; Fri, 09 Oct 2020 19:55:27 +0000 IronPort-SDR: Muyzc5U86mjl0MgPqdJZj4aVzmrmSxKssWX/kgjcoRJH7QLjIKyDASQnlU/s0zGO9KBDznNL2y MtHDQPXt+CgQ== X-IronPort-AV: E=McAfee;i="6000,8403,9769"; a="229715399" X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="229715399" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:54:04 -0700 IronPort-SDR: NEiErKYZfPZGqrWyxIZ0z43ef9+IKjrcXd9NJIRckxXQwdDEMd5poh/dknsqhifod6Ym/UoaZd Mu4h9c7DJvbA== X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="462301216" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:54:03 -0700 From: ira.weiny@intel.com To: Andrew Morton <akpm@linux-foundation.org>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@kernel.org>, Peter Zijlstra <peterz@infradead.org> Subject: [PATCH RFC PKS/PMEM 56/58] dax: Stray access protection for dax_direct_access() Date: Fri, 9 Oct 2020 12:50:31 -0700 Message-Id: <20201009195033.3208459-57-ira.weiny@intel.com> X-Mailer: git-send-email 2.28.0.rc0.12.gb6a658bd00c9 In-Reply-To: <20201009195033.3208459-1-ira.weiny@intel.com> References: <20201009195033.3208459-1-ira.weiny@intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201009_155526_925646_F6A691A0 X-CRM114-Status: GOOD ( 13.81 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [134.134.136.100 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list <linux-mtd.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-mtd>, <mailto:linux-mtd-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-mtd/> List-Post: <mailto:linux-mtd@lists.infradead.org> List-Help: <mailto:linux-mtd-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-mtd>, <mailto:linux-mtd-request@lists.infradead.org?subject=subscribe> Cc: linux-aio@kvack.org, linux-efi@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, linux-mmc@vger.kernel.org, Dave Hansen <dave.hansen@linux.intel.com>, dri-devel@lists.freedesktop.org, linux-mm@kvack.org, target-devel@vger.kernel.org, linux-mtd@lists.infradead.org, linux-kselftest@vger.kernel.org, samba-technical@lists.samba.org, Ira Weiny <ira.weiny@intel.com>, ceph-devel@vger.kernel.org, drbd-dev@lists.linbit.com, devel@driverdev.osuosl.org, linux-cifs@vger.kernel.org, linux-nilfs@vger.kernel.org, linux-scsi@vger.kernel.org, linux-nvdimm@lists.01.org, linux-rdma@vger.kernel.org, x86@kernel.org, amd-gfx@lists.freedesktop.org, linux-afs@lists.infradead.org, cluster-devel@redhat.com, linux-cachefs@redhat.com, intel-wired-lan@lists.osuosl.org, xen-devel@lists.xenproject.org, linux-ext4@vger.kernel.org, Fenghua Yu <fenghua.yu@intel.com>, linux-um@lists.infradead.org, intel-gfx@lists.freedesktop.org, ecryptfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, reiserfs-devel@vger.kernel.org, linux-block@vger.kernel.org, linux-bcache@vger.kernel.org, Dan Williams <dan.j.williams@intel.com>, io-uring@vger.kernel.org, linux-nfs@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net, netdev@vger.kernel.org, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, bpf@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-btrfs@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" <linux-mtd-bounces@lists.infradead.org> Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org |
Series |
PMEM: Introduce stray write protection for PMEM
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expand
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diff --git a/drivers/dax/super.c b/drivers/dax/super.c index e84070b55463..0ddb3ee73e36 100644 --- a/drivers/dax/super.c +++ b/drivers/dax/super.c @@ -30,6 +30,7 @@ static DEFINE_SPINLOCK(dax_host_lock); int dax_read_lock(void) { + dev_access_enable(false); return srcu_read_lock(&dax_srcu); } EXPORT_SYMBOL_GPL(dax_read_lock); @@ -37,6 +38,7 @@ EXPORT_SYMBOL_GPL(dax_read_lock); void dax_read_unlock(int id) { srcu_read_unlock(&dax_srcu, id); + dev_access_disable(false); } EXPORT_SYMBOL_GPL(dax_read_unlock);