From patchwork Fri Apr 15 04:52:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 1617636 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=pQWbUgzi; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4KfkjW6hPSz9sFv for ; Fri, 15 Apr 2022 15:02:55 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=GxXB2t1QQOUtigF588wjoLZ9oo6QX5nXxQG7TmzmPZs=; b=pQWbUgziJ8VCg0 RUu0cjKL1s7UAL8QZTHFiaLsj0oSA5PGM+cp+h2qcp/Nxa/LKJdMVVlog09k7H/mhiwYWSCCspZou vHhmp2lG3bUPAoME3B02OrHGfEepS041Dd7qQUCV5wZPeMIjaaCC02LA/ZWuXMr/DDT0jlgUaWK6i LZ0jef3sEokXpyd9ArUAcVjgUbUBnp2Y3ynlh4m1TZ4+xhCdB335uPYu9T3e92U2OFHkKyStSnvfR 1mfiBk2Fa0kb4azpnlAY32UFg5Ln2+LwiZ2CpeOL80nnziboe01OQ6TsvaLfEJMGXeLXxrumaJz6v ghng9N7aB8nPX+kToT7A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nfE6E-008WS4-GF; Fri, 15 Apr 2022 05:02:26 +0000 Received: from [2a02:1205:504b:4280:f5dd:42a4:896c:d877] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1nfDyG-008PgP-Ki; Fri, 15 Apr 2022 04:54:13 +0000 From: Christoph Hellwig To: Jens Axboe Cc: dm-devel@redhat.com, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-um@lists.infradead.org, linux-block@vger.kernel.org, drbd-dev@lists.linbit.com, nbd@other.debian.org, ceph-devel@vger.kernel.org, virtualization@lists.linux-foundation.org, xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org, linux-raid@vger.kernel.org, linux-mmc@vger.kernel.org, linux-mtd@lists.infradead.org, linux-nvme@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, jfs-discussion@lists.sourceforge.net, linux-nilfs@vger.kernel.org, ntfs3@lists.linux.dev, ocfs2-devel@oss.oracle.com, linux-mm@kvack.org, "Martin K . Petersen" , =?utf-8?q?Christoph_B?= =?utf-8?q?=C3=B6hmwalder?= , Coly Li , David Sterba Subject: [PATCH 23/27] block: add a bdev_max_discard_sectors helper Date: Fri, 15 Apr 2022 06:52:54 +0200 Message-Id: <20220415045258.199825-24-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220415045258.199825-1-hch@lst.de> References: <20220415045258.199825-1-hch@lst.de> MIME-Version: 1.0 X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Add a helper to query the number of sectors support per each discard bio based on the block device and use this helper to stop various places from poking into the request_queue to see if discard is supported and if so how much. This mirrors what is done e.g. for write zeroes as well. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Acked-by: Christoph Böhmwalder [drbd] Acked-by: Coly Li [bcache] Acked-by: David Sterba [btrfs] Reviewed-by: Chaitanya Kulkarni --- drivers/block/drbd/drbd_nl.c | 8 +++++--- drivers/block/drbd/drbd_receiver.c | 2 +- drivers/block/rnbd/rnbd-srv-dev.h | 3 +-- drivers/md/dm-io.c | 2 +- drivers/target/target_core_device.c | 7 +++---- fs/f2fs/segment.c | 6 ++---- include/linux/blkdev.h | 5 +++++ 7 files changed, 18 insertions(+), 15 deletions(-) diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index 4d00986d6f588..a0a06e238e917 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -1439,7 +1439,8 @@ static bool write_ordering_changed(struct disk_conf *a, struct disk_conf *b) static void sanitize_disk_conf(struct drbd_device *device, struct disk_conf *disk_conf, struct drbd_backing_dev *nbc) { - struct request_queue * const q = nbc->backing_bdev->bd_disk->queue; + struct block_device *bdev = nbc->backing_bdev; + struct request_queue *q = bdev->bd_disk->queue; if (disk_conf->al_extents < DRBD_AL_EXTENTS_MIN) disk_conf->al_extents = DRBD_AL_EXTENTS_MIN; @@ -1455,6 +1456,7 @@ static void sanitize_disk_conf(struct drbd_device *device, struct disk_conf *dis if (disk_conf->rs_discard_granularity) { int orig_value = disk_conf->rs_discard_granularity; + sector_t discard_size = bdev_max_discard_sectors(bdev) << 9; int remainder; if (q->limits.discard_granularity > disk_conf->rs_discard_granularity) @@ -1463,8 +1465,8 @@ static void sanitize_disk_conf(struct drbd_device *device, struct disk_conf *dis remainder = disk_conf->rs_discard_granularity % q->limits.discard_granularity; disk_conf->rs_discard_granularity += remainder; - if (disk_conf->rs_discard_granularity > q->limits.max_discard_sectors << 9) - disk_conf->rs_discard_granularity = q->limits.max_discard_sectors << 9; + if (disk_conf->rs_discard_granularity > discard_size) + disk_conf->rs_discard_granularity = discard_size; if (disk_conf->rs_discard_granularity != orig_value) drbd_info(device, "rs_discard_granularity changed to %d\n", diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c index 08da922f81d1d..0b4c7de463989 100644 --- a/drivers/block/drbd/drbd_receiver.c +++ b/drivers/block/drbd/drbd_receiver.c @@ -1524,7 +1524,7 @@ int drbd_issue_discard_or_zero_out(struct drbd_device *device, sector_t start, u granularity = max(q->limits.discard_granularity >> 9, 1U); alignment = (bdev_discard_alignment(bdev) >> 9) % granularity; - max_discard_sectors = min(q->limits.max_discard_sectors, (1U << 22)); + max_discard_sectors = min(bdev_max_discard_sectors(bdev), (1U << 22)); max_discard_sectors -= max_discard_sectors % granularity; if (unlikely(!max_discard_sectors)) goto zero_out; diff --git a/drivers/block/rnbd/rnbd-srv-dev.h b/drivers/block/rnbd/rnbd-srv-dev.h index 2c3df02b5e8ec..f82fbb4bbda8e 100644 --- a/drivers/block/rnbd/rnbd-srv-dev.h +++ b/drivers/block/rnbd/rnbd-srv-dev.h @@ -52,8 +52,7 @@ static inline int rnbd_dev_get_max_discard_sects(const struct rnbd_dev *dev) if (!blk_queue_discard(bdev_get_queue(dev->bdev))) return 0; - return blk_queue_get_max_sectors(bdev_get_queue(dev->bdev), - REQ_OP_DISCARD); + return bdev_max_discard_sectors(dev->bdev); } static inline int rnbd_dev_get_discard_granularity(const struct rnbd_dev *dev) diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c index 5762366333a27..e4b95eaeec8c7 100644 --- a/drivers/md/dm-io.c +++ b/drivers/md/dm-io.c @@ -311,7 +311,7 @@ static void do_region(int op, int op_flags, unsigned region, * Reject unsupported discard and write same requests. */ if (op == REQ_OP_DISCARD) - special_cmd_max_sectors = q->limits.max_discard_sectors; + special_cmd_max_sectors = bdev_max_discard_sectors(where->bdev); else if (op == REQ_OP_WRITE_ZEROES) special_cmd_max_sectors = q->limits.max_write_zeroes_sectors; if ((op == REQ_OP_DISCARD || op == REQ_OP_WRITE_ZEROES) && diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 16e775bcf4a7c..c3e25bac90d59 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -829,9 +829,8 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name) } /* - * Check if the underlying struct block_device request_queue supports - * the QUEUE_FLAG_DISCARD bit for UNMAP/WRITE_SAME in SCSI + TRIM - * in ATA and we need to set TPE=1 + * Check if the underlying struct block_device supports discard and if yes + * configure the UNMAP parameters. */ bool target_configure_unmap_from_queue(struct se_dev_attrib *attrib, struct block_device *bdev) @@ -843,7 +842,7 @@ bool target_configure_unmap_from_queue(struct se_dev_attrib *attrib, return false; attrib->max_unmap_lba_count = - q->limits.max_discard_sectors >> (ilog2(block_size) - 9); + bdev_max_discard_sectors(bdev) >> (ilog2(block_size) - 9); /* * Currently hardcoded to 1 in Linux/SCSI code.. */ diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 22dfeb9915290..71f09adbcba86 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -1196,9 +1196,8 @@ static int __submit_discard_cmd(struct f2fs_sb_info *sbi, unsigned int *issued) { struct block_device *bdev = dc->bdev; - struct request_queue *q = bdev_get_queue(bdev); unsigned int max_discard_blocks = - SECTOR_TO_BLOCK(q->limits.max_discard_sectors); + SECTOR_TO_BLOCK(bdev_max_discard_sectors(bdev)); struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ? &(dcc->fstrim_list) : &(dcc->wait_list); @@ -1375,9 +1374,8 @@ static void __update_discard_tree_range(struct f2fs_sb_info *sbi, struct discard_cmd *dc; struct discard_info di = {0}; struct rb_node **insert_p = NULL, *insert_parent = NULL; - struct request_queue *q = bdev_get_queue(bdev); unsigned int max_discard_blocks = - SECTOR_TO_BLOCK(q->limits.max_discard_sectors); + SECTOR_TO_BLOCK(bdev_max_discard_sectors(bdev)); block_t end = lstart + len; dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root, diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 34b1cfd067421..ce16247d3afab 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1254,6 +1254,11 @@ bdev_zone_write_granularity(struct block_device *bdev) int bdev_alignment_offset(struct block_device *bdev); unsigned int bdev_discard_alignment(struct block_device *bdev); +static inline unsigned int bdev_max_discard_sectors(struct block_device *bdev) +{ + return bdev_get_queue(bdev)->limits.max_discard_sectors; +} + static inline unsigned int bdev_write_zeroes_sectors(struct block_device *bdev) { struct request_queue *q = bdev_get_queue(bdev);