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 A53F7C3B185 for ; Mon, 10 Feb 2020 09:34:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 892AE214DB for ; Mon, 10 Feb 2020 09:34:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727588AbgBJJeP (ORCPT ); Mon, 10 Feb 2020 04:34:15 -0500 Received: from relay.sw.ru ([185.231.240.75]:59492 "EHLO relay.sw.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727437AbgBJJeN (ORCPT ); Mon, 10 Feb 2020 04:34:13 -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 1j15Rh-0000JW-3G; Mon, 10 Feb 2020 12:33:37 +0300 Subject: [PATCH v6 1/6] block: Add @flags argument to bdev_write_zeroes_sectors() From: Kirill Tkhai To: martin.petersen@oracle.com, bob.liu@oracle.com, axboe@kernel.dk Cc: agk@redhat.com, snitzer@redhat.com, dm-devel@redhat.com, song@kernel.org, tytso@mit.edu, adilger.kernel@dilger.ca, Chaitanya.Kulkarni@wdc.com, darrick.wong@oracle.com, ming.lei@redhat.com, osandov@fb.com, jthumshirn@suse.de, minwoo.im.dev@gmail.com, damien.lemoal@wdc.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, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, ktkhai@virtuozzo.com Date: Mon, 10 Feb 2020 12:33:37 +0300 Message-ID: <158132721695.239613.5220696772652540347.stgit@localhost.localdomain> In-Reply-To: <158132703141.239613.3550455492676290009.stgit@localhost.localdomain> References: <158132703141.239613.3550455492676290009.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 This is a preparation for next patch, which introduces a new flag BLKDEV_ZERO_ALLOCATE for calls, which need only allocation of blocks and don't need actual blocks zeroing. Signed-off-by: Kirill Tkhai Reviewed-by: Bob Liu Reviewed-by: Martin K. Petersen --- block/blk-lib.c | 6 +++--- drivers/md/dm-kcopyd.c | 2 +- drivers/target/target_core_iblock.c | 4 ++-- include/linux/blkdev.h | 3 ++- 4 files changed, 8 insertions(+), 7 deletions(-) diff --git a/block/blk-lib.c b/block/blk-lib.c index 5f2c429d4378..3e38c93cfc53 100644 --- a/block/blk-lib.c +++ b/block/blk-lib.c @@ -224,7 +224,7 @@ static int __blkdev_issue_write_zeroes(struct block_device *bdev, return -EPERM; /* Ensure that max_write_zeroes_sectors doesn't overflow bi_size */ - max_write_zeroes_sectors = bdev_write_zeroes_sectors(bdev); + max_write_zeroes_sectors = bdev_write_zeroes_sectors(bdev, 0); if (max_write_zeroes_sectors == 0) return -EOPNOTSUPP; @@ -362,7 +362,7 @@ int blkdev_issue_zeroout(struct block_device *bdev, sector_t sector, sector_t bs_mask; struct bio *bio; struct blk_plug plug; - bool try_write_zeroes = !!bdev_write_zeroes_sectors(bdev); + bool try_write_zeroes = !!bdev_write_zeroes_sectors(bdev, 0); bs_mask = (bdev_logical_block_size(bdev) >> 9) - 1; if ((sector | nr_sects) & bs_mask) @@ -391,7 +391,7 @@ int blkdev_issue_zeroout(struct block_device *bdev, sector_t sector, try_write_zeroes = false; goto retry; } - if (!bdev_write_zeroes_sectors(bdev)) { + if (!bdev_write_zeroes_sectors(bdev, 0)) { /* * Zeroing offload support was indicated, but the * device reported ILLEGAL REQUEST (for some devices diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c index 1bbe4a34ef4c..f1b8e7926dd4 100644 --- a/drivers/md/dm-kcopyd.c +++ b/drivers/md/dm-kcopyd.c @@ -831,7 +831,7 @@ void dm_kcopyd_copy(struct dm_kcopyd_client *kc, struct dm_io_region *from, */ job->rw = REQ_OP_WRITE_ZEROES; for (i = 0; i < job->num_dests; i++) - if (!bdev_write_zeroes_sectors(job->dests[i].bdev)) { + if (!bdev_write_zeroes_sectors(job->dests[i].bdev, 0)) { job->rw = WRITE; break; } diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 51ffd5c002de..73a63e197bf5 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -117,7 +117,7 @@ static int iblock_configure_device(struct se_device *dev) * Enable write same emulation for IBLOCK and use 0xFFFF as * the smaller WRITE_SAME(10) only has a two-byte block count. */ - max_write_zeroes_sectors = bdev_write_zeroes_sectors(bd); + max_write_zeroes_sectors = bdev_write_zeroes_sectors(bd, 0); if (max_write_zeroes_sectors) dev->dev_attrib.max_write_same_len = max_write_zeroes_sectors; else @@ -468,7 +468,7 @@ iblock_execute_write_same(struct se_cmd *cmd) return TCM_INVALID_CDB_FIELD; } - if (bdev_write_zeroes_sectors(bdev)) { + if (bdev_write_zeroes_sectors(bdev, 0)) { if (!iblock_execute_zero_out(bdev, cmd)) return 0; } diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 053ea4b51988..1e3c08854b09 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1417,7 +1417,8 @@ static inline unsigned int bdev_write_same(struct block_device *bdev) return 0; } -static inline unsigned int bdev_write_zeroes_sectors(struct block_device *bdev) +static inline unsigned int bdev_write_zeroes_sectors(struct block_device *bdev, + unsigned int flags) { struct request_queue *q = bdev_get_queue(bdev);