From patchwork Fri Oct 9 19:50:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 11828823 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 66B2115E6 for ; Fri, 9 Oct 2020 20:02:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4EBD1225A9 for ; Fri, 9 Oct 2020 20:02:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390809AbgJIUBx (ORCPT ); Fri, 9 Oct 2020 16:01:53 -0400 Received: from mga07.intel.com ([134.134.136.100]:56812 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390983AbgJITwz (ORCPT ); Fri, 9 Oct 2020 15:52:55 -0400 IronPort-SDR: Op9kc88PPdmQBPFTqx/+39WorDKjyG3ipU0g0nie1KwnkHl76GrMsKA5g1TH6J/GMtPSElTjiP VPk0GASkFqkA== X-IronPort-AV: E=McAfee;i="6000,8403,9769"; a="229715275" X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="229715275" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:52:51 -0700 IronPort-SDR: raa31ON9t7yf3LIgfzeAsEKPUCppaesVfvBVJ2ruufMJvWsy9JzU1jTdgl2++U0w8tR7AuyOxm Q4+3OjaqYbiw== X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="298531317" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:52:50 -0700 From: ira.weiny@intel.com To: Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Peter Zijlstra Cc: Ira Weiny , Gao Xiang , Chao Yu , 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 34/58] fs/erofs: Utilize new kmap_thread() Date: Fri, 9 Oct 2020 12:50:09 -0700 Message-Id: <20201009195033.3208459-35-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 The kmap() calls in this FS are localized to a single thread. To avoid the over head of global PKRS updates use the new kmap_thread() call. Cc: Gao Xiang Cc: Chao Yu Signed-off-by: Ira Weiny --- fs/erofs/super.c | 4 ++-- fs/erofs/xattr.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/erofs/super.c b/fs/erofs/super.c index ddaa516c008a..41696b60f1b3 100644 --- a/fs/erofs/super.c +++ b/fs/erofs/super.c @@ -139,7 +139,7 @@ static int erofs_read_superblock(struct super_block *sb) sbi = EROFS_SB(sb); - data = kmap(page); + data = kmap_thread(page); dsb = (struct erofs_super_block *)(data + EROFS_SUPER_OFFSET); ret = -EINVAL; @@ -189,7 +189,7 @@ static int erofs_read_superblock(struct super_block *sb) } ret = 0; out: - kunmap(page); + kunmap_thread(page); put_page(page); return ret; } diff --git a/fs/erofs/xattr.c b/fs/erofs/xattr.c index c8c381eadcd6..1771baa99d77 100644 --- a/fs/erofs/xattr.c +++ b/fs/erofs/xattr.c @@ -20,7 +20,7 @@ static inline void xattr_iter_end(struct xattr_iter *it, bool atomic) { /* the only user of kunmap() is 'init_inode_xattrs' */ if (!atomic) - kunmap(it->page); + kunmap_thread(it->page); else kunmap_atomic(it->kaddr); @@ -96,7 +96,7 @@ static int init_inode_xattrs(struct inode *inode) } /* read in shared xattr array (non-atomic, see kmalloc below) */ - it.kaddr = kmap(it.page); + it.kaddr = kmap_thread(it.page); atomic_map = false; ih = (struct erofs_xattr_ibody_header *)(it.kaddr + it.ofs);