From patchwork Fri Oct 9 19:49:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 11827527 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 7524A1580 for ; Fri, 9 Oct 2020 19:52:02 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4BB082240A for ; Fri, 9 Oct 2020 19:52:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4BB082240A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3B38E6EDC7; Fri, 9 Oct 2020 19:52:01 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id E0C936EDC5; Fri, 9 Oct 2020 19:51:59 +0000 (UTC) IronPort-SDR: WbFJjuoM3Se5VhBxLIFGL+27IwSKUV2zW6v59pieqlqx7rD7CsWH40jR1JV0GLSKsX2dk+ZKvd tWJZkEkQnVxA== X-IronPort-AV: E=McAfee;i="6000,8403,9769"; a="162067935" X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="162067935" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:51:59 -0700 IronPort-SDR: eWSKFRksQmWHvS1j4lFouXjU/VQ78asIZFlodYo3aryNHFOArT/TLAMBqja15iBonRYEaVT+Tm vvSyZvytK3gg== X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="462300719" 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 12:51:57 -0700 From: ira.weiny@intel.com To: Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Peter Zijlstra Subject: [PATCH RFC PKS/PMEM 20/58] fs/jffs2: Utilize new kmap_thread() Date: Fri, 9 Oct 2020 12:49:55 -0700 Message-Id: <20201009195033.3208459-21-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-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-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 , 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 , 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, Richard Weinberger , 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, David Woodhouse , Fenghua Yu , 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 , 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 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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: David Woodhouse Cc: Richard Weinberger Signed-off-by: Ira Weiny --- fs/jffs2/file.c | 4 ++-- fs/jffs2/gc.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c index f8fb89b10227..3e6d54f9b011 100644 --- a/fs/jffs2/file.c +++ b/fs/jffs2/file.c @@ -88,7 +88,7 @@ static int jffs2_do_readpage_nolock (struct inode *inode, struct page *pg) BUG_ON(!PageLocked(pg)); - pg_buf = kmap(pg); + pg_buf = kmap_thread(pg); /* FIXME: Can kmap fail? */ ret = jffs2_read_inode_range(c, f, pg_buf, pg->index << PAGE_SHIFT, @@ -103,7 +103,7 @@ static int jffs2_do_readpage_nolock (struct inode *inode, struct page *pg) } flush_dcache_page(pg); - kunmap(pg); + kunmap_thread(pg); jffs2_dbg(2, "readpage finished\n"); return ret; diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c index 373b3b7c9f44..a7259783ab84 100644 --- a/fs/jffs2/gc.c +++ b/fs/jffs2/gc.c @@ -1335,7 +1335,7 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era return PTR_ERR(page); } - pg_ptr = kmap(page); + pg_ptr = kmap_thread(page); mutex_lock(&f->sem); offset = start; @@ -1400,7 +1400,7 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era } } - kunmap(page); + kunmap_thread(page); put_page(page); return ret; }