From nobody Mon Feb 9 08:55:15 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1602273103; cv=none; d=zohomail.com; s=zohoarc; b=VMn4Gtt2dW7yAp02M9RfocBRd2DQ2LZf+ES9s/ivbMQyVIAQuHhxh+MVwOQi/Pun+/tqjYJohfUv0tzAJaD6DxJB9VuBP4StrUSld2K5YHSn721w1A/yCtevwYK9bv4y4mcJNGckCf/pA3p0Zc8kyT67ulYXBT6+r4xwD0Bo9lw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1602273103; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=YRIKYmxc6UZQaNDNDt7ZbhBGcrM8JXT8RwEcpigZ4aI=; b=Xc/gpPjtAOnJEp9JnBNZHnDV2bFI4dBXeut3Gg6yDjep9DpHb+GI0wGlH4Uudn9l75r4FCUHjRKS5vAj1Rkp/ZqC0KQQ8C7e/Xs5mQOMYnb4HrXNWXlqiM4+/woxj+knjDgEHl7kkA4DXAh6Wi4FPy0klcYLeTpphdUAhN7kP+Q= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1602273103470331.7052813660905; Fri, 9 Oct 2020 12:51:43 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.5057.12977 (Exim 4.92) (envelope-from ) id 1kQyQJ-0001jT-AI; Fri, 09 Oct 2020 19:51:27 +0000 Received: by outflank-mailman (output) from mailman id 5057.12977; Fri, 09 Oct 2020 19:51:27 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kQyQJ-0001jJ-6B; Fri, 09 Oct 2020 19:51:27 +0000 Received: by outflank-mailman (input) for mailman id 5057; Fri, 09 Oct 2020 19:51:25 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kQyQH-00017t-Nq for xen-devel@lists.xenproject.org; Fri, 09 Oct 2020 19:51:25 +0000 Received: from mga18.intel.com (unknown [134.134.136.126]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 6eb2b790-532f-4c20-9458-3ca15fe10dd4; Fri, 09 Oct 2020 19:51:12 +0000 (UTC) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:51:11 -0700 Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:51:09 -0700 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kQyQH-00017t-Nq for xen-devel@lists.xenproject.org; Fri, 09 Oct 2020 19:51:25 +0000 Received: from mga18.intel.com (unknown [134.134.136.126]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 6eb2b790-532f-4c20-9458-3ca15fe10dd4; Fri, 09 Oct 2020 19:51:12 +0000 (UTC) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:51:11 -0700 Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:51:09 -0700 X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 6eb2b790-532f-4c20-9458-3ca15fe10dd4 IronPort-SDR: NR9N6xiFW+t/8G8yY3Q9fs/VzfLsE90NMCOhK2w0F/9yvvLNWB/jTDcdKz0LujAZkCrQ4deT8A fIjKt9UJL/+A== X-IronPort-AV: E=McAfee;i="6000,8403,9769"; a="153363388" X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="153363388" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False IronPort-SDR: 7ZsxuYrd4RIh+I9L87qE8QKpDxHdxlIArpw96UL8x0WQ0i4hLag3NZ1m816qhb9i0FMTl4f1za dG2KA2sC/NWA== X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="312652519" From: ira.weiny@intel.com To: Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Peter Zijlstra Cc: Ira Weiny , Jens Axboe , 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 07/58] drivers/drbd: Utilize new kmap_thread() Date: Fri, 9 Oct 2020 12:49:42 -0700 Message-Id: <20201009195033.3208459-8-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 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Ira Weiny The kmap() calls in this driver are localized to a single thread. To avoid the over head of global PKRS updates use the new kmap_thread() call. Cc: Jens Axboe Signed-off-by: Ira Weiny --- drivers/block/drbd/drbd_main.c | 4 ++-- drivers/block/drbd/drbd_receiver.c | 12 ++++++------ 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index 573dbf6f0c31..f0d0c6b0745e 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -1532,9 +1532,9 @@ static int _drbd_no_send_page(struct drbd_peer_device= *peer_device, struct page int err; =20 socket =3D peer_device->connection->data.socket; - addr =3D kmap(page) + offset; + addr =3D kmap_thread(page) + offset; err =3D drbd_send_all(peer_device->connection, socket, addr, size, msg_fl= ags); - kunmap(page); + kunmap_thread(page); if (!err) peer_device->device->send_cnt +=3D size >> 9; return err; diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_r= eceiver.c index 422363daa618..4704bc0564e2 100644 --- a/drivers/block/drbd/drbd_receiver.c +++ b/drivers/block/drbd/drbd_receiver.c @@ -1951,13 +1951,13 @@ read_in_block(struct drbd_peer_device *peer_device,= u64 id, sector_t sector, page =3D peer_req->pages; page_chain_for_each(page) { unsigned len =3D min_t(int, ds, PAGE_SIZE); - data =3D kmap(page); + data =3D kmap_thread(page); err =3D drbd_recv_all_warn(peer_device->connection, data, len); if (drbd_insert_fault(device, DRBD_FAULT_RECEIVE)) { drbd_err(device, "Fault injection: Corrupting data on receive\n"); data[0] =3D data[0] ^ (unsigned long)-1; } - kunmap(page); + kunmap_thread(page); if (err) { drbd_free_peer_req(device, peer_req); return NULL; @@ -1992,7 +1992,7 @@ static int drbd_drain_block(struct drbd_peer_device *= peer_device, int data_size) =20 page =3D drbd_alloc_pages(peer_device, 1, 1); =20 - data =3D kmap(page); + data =3D kmap_thread(page); while (data_size) { unsigned int len =3D min_t(int, data_size, PAGE_SIZE); =20 @@ -2001,7 +2001,7 @@ static int drbd_drain_block(struct drbd_peer_device *= peer_device, int data_size) break; data_size -=3D len; } - kunmap(page); + kunmap_thread(page); drbd_free_pages(peer_device->device, page, 0); return err; } @@ -2033,10 +2033,10 @@ static int recv_dless_read(struct drbd_peer_device = *peer_device, struct drbd_req D_ASSERT(peer_device->device, sector =3D=3D bio->bi_iter.bi_sector); =20 bio_for_each_segment(bvec, bio, iter) { - void *mapped =3D kmap(bvec.bv_page) + bvec.bv_offset; + void *mapped =3D kmap_thread(bvec.bv_page) + bvec.bv_offset; expect =3D min_t(int, data_size, bvec.bv_len); err =3D drbd_recv_all_warn(peer_device->connection, mapped, expect); - kunmap(bvec.bv_page); + kunmap_thread(bvec.bv_page); if (err) return err; data_size -=3D expect; --=20 2.28.0.rc0.12.gb6a658bd00c9