From patchwork Fri Oct 9 19:50:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 285925 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=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 BFF0AC6379F for ; Fri, 9 Oct 2020 19:59:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7C35822267 for ; Fri, 9 Oct 2020 19:59:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388385AbgJIT72 (ORCPT ); Fri, 9 Oct 2020 15:59:28 -0400 Received: from mga01.intel.com ([192.55.52.88]:3593 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391078AbgJITxW (ORCPT ); Fri, 9 Oct 2020 15:53:22 -0400 IronPort-SDR: TuW6f/eUiPOWBVUWPJSST+0egNgNIn2HyrjOLitLNnO3XIXYcZZ7k6u/vtD7EeyPkkCEzhJArJ zTM7g1ijBJ7w== X-IronPort-AV: E=McAfee;i="6000,8403,9769"; a="182976382" X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="182976382" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:53:02 -0700 IronPort-SDR: bH2kRxXxeY8kuFBN5R8RneSpQbEQLW5eawptefbcIpm8xkU067aWcbaReXxx6/6TDXgDaxiIQ5 8lenxDucas2g== X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="519847131" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:53:02 -0700 From: ira.weiny@intel.com To: Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Peter Zijlstra Cc: Ira Weiny , Jan Kara , x86@kernel.org, Dave Hansen , Dan Williams , Fenghua Yu , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, kexec@lists.infradead.org, linux-bcache@vger.kernel.org, linux-mtd@lists.infradead.org, devel@driverdev.osuosl.org, linux-efi@vger.kernel.org, linux-mmc@vger.kernel.org, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, linux-nfs@vger.kernel.org, ceph-devel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-aio@kvack.org, io-uring@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-um@lists.infradead.org, linux-ntfs-dev@lists.sourceforge.net, reiserfs-devel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-nilfs@vger.kernel.org, cluster-devel@redhat.com, ecryptfs@vger.kernel.org, linux-cifs@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-afs@lists.infradead.org, linux-rdma@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, drbd-dev@lists.linbit.com, linux-block@vger.kernel.org, xen-devel@lists.xenproject.org, linux-cachefs@redhat.com, samba-technical@lists.samba.org, intel-wired-lan@lists.osuosl.org Subject: [PATCH RFC PKS/PMEM 37/58] fs/ext2: Utilize new kmap_thread() Date: Fri, 9 Oct 2020 12:50:12 -0700 Message-Id: <20201009195033.3208459-38-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 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org From: Ira Weiny These kmap() calls are localized to a single thread. To avoid the over head of global PKRS update use the new kmap_thread() call instead. Cc: Jan Kara Signed-off-by: Ira Weiny --- fs/ext2/dir.c | 2 +- fs/ext2/ext2.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c index f3194bf20733..abe97ba458c8 100644 --- a/fs/ext2/dir.c +++ b/fs/ext2/dir.c @@ -196,7 +196,7 @@ static struct page * ext2_get_page(struct inode *dir, unsigned long n, struct address_space *mapping = dir->i_mapping; struct page *page = read_mapping_page(mapping, n, NULL); if (!IS_ERR(page)) { - kmap(page); + kmap_thread(page); if (unlikely(!PageChecked(page))) { if (PageError(page) || !ext2_check_page(page, quiet)) goto fail; diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h index 021ec8b42ac3..9bcb6714c255 100644 --- a/fs/ext2/ext2.h +++ b/fs/ext2/ext2.h @@ -749,7 +749,7 @@ extern struct ext2_dir_entry_2 * ext2_dotdot (struct inode *, struct page **); extern void ext2_set_link(struct inode *, struct ext2_dir_entry_2 *, struct page *, struct inode *, int); static inline void ext2_put_page(struct page *page) { - kunmap(page); + kunmap_thread(page); put_page(page); }