From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 74021C43603 for ; Tue, 10 Dec 2019 16:57:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4F9E02077B for ; Tue, 10 Dec 2019 16:57:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727747AbfLJQ5I (ORCPT ); Tue, 10 Dec 2019 11:57:08 -0500 Received: from relay.sw.ru ([185.231.240.75]:36454 "EHLO relay.sw.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727559AbfLJQ5F (ORCPT ); Tue, 10 Dec 2019 11:57:05 -0500 Received: from dhcp-172-16-24-104.sw.ru ([172.16.24.104] helo=localhost.localdomain) by relay.sw.ru with esmtp (Exim 4.92.3) (envelope-from ) id 1ieio2-0006yu-9G; Tue, 10 Dec 2019 19:56:14 +0300 Subject: [PATCH RFC 2/3] loop: Forward REQ_OP_ASSIGN_RANGE into fallocate(0) From: Kirill Tkhai To: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-ext4@vger.kernel.org Cc: axboe@kernel.dk, tytso@mit.edu, adilger.kernel@dilger.ca, ming.lei@redhat.com, osandov@fb.com, jthumshirn@suse.de, minwoo.im.dev@gmail.com, damien.lemoal@wdc.com, ktkhai@virtuozzo.com, andrea.parri@amarulasolutions.com, hare@suse.com, tj@kernel.org, ajay.joshi@wdc.com, sagi@grimberg.me, dsterba@suse.com, chaitanya.kulkarni@wdc.com, bvanassche@acm.org, dhowells@redhat.com, asml.silence@gmail.com Date: Tue, 10 Dec 2019 19:56:13 +0300 Message-ID: <157599697369.12112.10138136904533871162.stgit@localhost.localdomain> In-Reply-To: <157599668662.12112.10184894900037871860.stgit@localhost.localdomain> References: <157599668662.12112.10184894900037871860.stgit@localhost.localdomain> User-Agent: StGit/0.19 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Send fallocate(0) request into underlining filesystem after upper filesystem sent REQ_OP_ASSIGN_RANGE request to block device. Signed-off-by: Kirill Tkhai --- drivers/block/loop.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 739b372a5112..d99d9193de7a 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -609,6 +609,8 @@ static int do_req_filebacked(struct loop_device *lo, struct request *rq) FALLOC_FL_PUNCH_HOLE); case REQ_OP_DISCARD: return lo_fallocate(lo, rq, pos, FALLOC_FL_PUNCH_HOLE); + case REQ_OP_ASSIGN_RANGE: + return lo_fallocate(lo, rq, pos, 0); case REQ_OP_WRITE: if (lo->transfer) return lo_write_transfer(lo, rq, pos); @@ -875,6 +877,7 @@ static void loop_config_discard(struct loop_device *lo) lo->lo_encrypt_key_size) { q->limits.discard_granularity = 0; q->limits.discard_alignment = 0; + q->limits.max_assign_range_sectors = 0; blk_queue_max_discard_sectors(q, 0); blk_queue_max_write_zeroes_sectors(q, 0); blk_queue_flag_clear(QUEUE_FLAG_DISCARD, q); @@ -883,6 +886,7 @@ static void loop_config_discard(struct loop_device *lo) q->limits.discard_granularity = inode->i_sb->s_blocksize; q->limits.discard_alignment = 0; + q->limits.max_assign_range_sectors = UINT_MAX >> 9; blk_queue_max_discard_sectors(q, UINT_MAX >> 9); blk_queue_max_write_zeroes_sectors(q, UINT_MAX >> 9); @@ -1917,6 +1921,7 @@ static blk_status_t loop_queue_rq(struct blk_mq_hw_ctx *hctx, case REQ_OP_FLUSH: case REQ_OP_DISCARD: case REQ_OP_WRITE_ZEROES: + case REQ_OP_ASSIGN_RANGE: cmd->use_aio = false; break; default: