From patchwork Fri Oct 9 19:49:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 11827465 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 17ECB14D5 for ; Fri, 9 Oct 2020 19:51:46 +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 E72B2223BF for ; Fri, 9 Oct 2020 19:51:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E72B2223BF 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 A4B206EDBE; Fri, 9 Oct 2020 19:51:44 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 013656EDB5; Fri, 9 Oct 2020 19:51:42 +0000 (UTC) IronPort-SDR: TprXuji0B8pgulECbScuLAttrCMV72y4Y2ZkFplV53lc0Xxg9GLokr8nZOno2WPr1aa5YzURym XuUTQQoo05bQ== X-IronPort-AV: E=McAfee;i="6000,8403,9769"; a="164743759" X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="164743759" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:51:42 -0700 IronPort-SDR: /JTFkd5x0991ia3Dqzqc9DQMEj3VkzRKrzcEaYc1Uf7R2BILbYJ/fow/WUSSa3njc7c47Zr56l AjDrFCZ0Z24A== X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="389236880" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:51:41 -0700 From: ira.weiny@intel.com To: Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Peter Zijlstra Subject: [PATCH RFC PKS/PMEM 15/58] fs/ecryptfs: Utilize new kmap_thread() Date: Fri, 9 Oct 2020 12:49:50 -0700 Message-Id: <20201009195033.3208459-16-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, Eric Biggers , kexec@lists.infradead.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, Herbert Xu , 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, Aditya Pakki , linux-mmc@vger.kernel.org, linux-ext4@vger.kernel.org, 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, xen-devel@lists.xenproject.org, Dan Williams , io-uring@vger.kernel.org, linux-nfs@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net, netdev@vger.kernel.org, linux-doc@vger.kernel.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: Herbert Xu Cc: Eric Biggers Cc: Aditya Pakki Signed-off-by: Ira Weiny --- fs/ecryptfs/crypto.c | 8 ++++---- fs/ecryptfs/read_write.c | 8 ++++---- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c index 0681540c48d9..e73e00994bee 100644 --- a/fs/ecryptfs/crypto.c +++ b/fs/ecryptfs/crypto.c @@ -469,10 +469,10 @@ int ecryptfs_encrypt_page(struct page *page) } lower_offset = lower_offset_for_page(crypt_stat, page); - enc_extent_virt = kmap(enc_extent_page); + enc_extent_virt = kmap_thread(enc_extent_page); rc = ecryptfs_write_lower(ecryptfs_inode, enc_extent_virt, lower_offset, PAGE_SIZE); - kunmap(enc_extent_page); + kunmap_thread(enc_extent_page); if (rc < 0) { ecryptfs_printk(KERN_ERR, "Error attempting to write lower page; rc = [%d]\n", @@ -518,10 +518,10 @@ int ecryptfs_decrypt_page(struct page *page) BUG_ON(!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)); lower_offset = lower_offset_for_page(crypt_stat, page); - page_virt = kmap(page); + page_virt = kmap_thread(page); rc = ecryptfs_read_lower(page_virt, lower_offset, PAGE_SIZE, ecryptfs_inode); - kunmap(page); + kunmap_thread(page); if (rc < 0) { ecryptfs_printk(KERN_ERR, "Error attempting to read lower page; rc = [%d]\n", diff --git a/fs/ecryptfs/read_write.c b/fs/ecryptfs/read_write.c index 0438997ac9d8..5eca4330c0c0 100644 --- a/fs/ecryptfs/read_write.c +++ b/fs/ecryptfs/read_write.c @@ -64,11 +64,11 @@ int ecryptfs_write_lower_page_segment(struct inode *ecryptfs_inode, offset = ((((loff_t)page_for_lower->index) << PAGE_SHIFT) + offset_in_page); - virt = kmap(page_for_lower); + virt = kmap_thread(page_for_lower); rc = ecryptfs_write_lower(ecryptfs_inode, virt, offset, size); if (rc > 0) rc = 0; - kunmap(page_for_lower); + kunmap_thread(page_for_lower); return rc; } @@ -251,11 +251,11 @@ int ecryptfs_read_lower_page_segment(struct page *page_for_ecryptfs, int rc; offset = ((((loff_t)page_index) << PAGE_SHIFT) + offset_in_page); - virt = kmap(page_for_ecryptfs); + virt = kmap_thread(page_for_ecryptfs); rc = ecryptfs_read_lower(virt, offset, size, ecryptfs_inode); if (rc > 0) rc = 0; - kunmap(page_for_ecryptfs); + kunmap_thread(page_for_ecryptfs); flush_dcache_page(page_for_ecryptfs); return rc; }