From patchwork Fri Oct 9 19:50:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 11827635 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 1E0691580 for ; Fri, 9 Oct 2020 19:52:29 +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 009EE22314 for ; Fri, 9 Oct 2020 19:52:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 009EE22314 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6437B6EDD4; Fri, 9 Oct 2020 19:52:28 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id D376D6EDD4; Fri, 9 Oct 2020 19:52:26 +0000 (UTC) IronPort-SDR: 8FAXhc2SaFEogrVqPLzHfICpEUubqwLOKqLLa4T4gMSNSoodwslP+fVWACf4lMBPVBhLnFJfG0 vgshO9E1/UCQ== X-IronPort-AV: E=McAfee;i="6000,8403,9769"; a="227179026" X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="227179026" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:52:26 -0700 IronPort-SDR: enOwdrUvox960YRmC5C0rYPH71vGkXRrRSf++MkJJnBOIwe1z1BLjEriaudfjb7SF8F3v1X02a epHq/DZLuLjw== X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="355863002" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:52:25 -0700 From: ira.weiny@intel.com To: Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Peter Zijlstra Date: Fri, 9 Oct 2020 12:50:02 -0700 Message-Id: <20201009195033.3208459-28-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 Subject: [Intel-gfx] [PATCH RFC PKS/PMEM 27/58] fs/ubifs: Utilize new kmap_thread() X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, 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: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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: Richard Weinberger Signed-off-by: Ira Weiny --- fs/ubifs/file.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index b77d1637bbbc..a3537447a885 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -111,7 +111,7 @@ static int do_readpage(struct page *page) ubifs_assert(c, !PageChecked(page)); ubifs_assert(c, !PagePrivate(page)); - addr = kmap(page); + addr = kmap_thread(page); block = page->index << UBIFS_BLOCKS_PER_PAGE_SHIFT; beyond = (i_size + UBIFS_BLOCK_SIZE - 1) >> UBIFS_BLOCK_SHIFT; @@ -174,7 +174,7 @@ static int do_readpage(struct page *page) SetPageUptodate(page); ClearPageError(page); flush_dcache_page(page); - kunmap(page); + kunmap_thread(page); return 0; error: @@ -182,7 +182,7 @@ static int do_readpage(struct page *page) ClearPageUptodate(page); SetPageError(page); flush_dcache_page(page); - kunmap(page); + kunmap_thread(page); return err; } @@ -616,7 +616,7 @@ static int populate_page(struct ubifs_info *c, struct page *page, dbg_gen("ino %lu, pg %lu, i_size %lld, flags %#lx", inode->i_ino, page->index, i_size, page->flags); - addr = zaddr = kmap(page); + addr = zaddr = kmap_thread(page); end_index = (i_size - 1) >> PAGE_SHIFT; if (!i_size || page->index > end_index) { @@ -692,7 +692,7 @@ static int populate_page(struct ubifs_info *c, struct page *page, SetPageUptodate(page); ClearPageError(page); flush_dcache_page(page); - kunmap(page); + kunmap_thread(page); *n = nn; return 0; @@ -700,7 +700,7 @@ static int populate_page(struct ubifs_info *c, struct page *page, ClearPageUptodate(page); SetPageError(page); flush_dcache_page(page); - kunmap(page); + kunmap_thread(page); ubifs_err(c, "bad data node (block %u, inode %lu)", page_block, inode->i_ino); return -EINVAL; @@ -918,7 +918,7 @@ static int do_writepage(struct page *page, int len) /* Update radix tree tags */ set_page_writeback(page); - addr = kmap(page); + addr = kmap_thread(page); block = page->index << UBIFS_BLOCKS_PER_PAGE_SHIFT; i = 0; while (len) { @@ -950,7 +950,7 @@ static int do_writepage(struct page *page, int len) ClearPagePrivate(page); ClearPageChecked(page); - kunmap(page); + kunmap_thread(page); unlock_page(page); end_page_writeback(page); return err;