From patchwork Tue Jan 26 02:24:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Naohiro Aota X-Patchwork-Id: 12048051 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 AE702C433E0 for ; Tue, 26 Jan 2021 19:29:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 86AB322A84 for ; Tue, 26 Jan 2021 19:29:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388441AbhAZFoa (ORCPT ); Tue, 26 Jan 2021 00:44:30 -0500 Received: from esa6.hgst.iphmx.com ([216.71.154.45]:38250 "EHLO esa6.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726573AbhAZC1n (ORCPT ); Mon, 25 Jan 2021 21:27:43 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1611628062; x=1643164062; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=A8PFG3Diie06Y2nM5+Pb7vgzC9jKX3Ev6iZz/zowzC8=; b=Ojhq2rt7TkWrMDZlqqbmLmydalhLLLzbrfm+cZC9GStIM/d7Ho1GzTtg 5qocebYNhXDRHz10wsM5weH0SYnLlxQwph+hSTTRH2t7oPFr369ICgrVb ijvJmIfGUAjhd/NX0yYSuJ1633ZZ9cROllR8oh9+ZTRLpKRFkJlmZi18i 7yaEnm+a0b0q/gA1ORacTp6UHercfvOReilVHqcpXSzuDXeXgdKzYM3ax dUv5pJLeA0sGDh34yfXfedzEuehV64Ki+SiL6/4pcUd4AXK7qT1VwC9TW SW3y95MqHeZ+9pMxNXN0NKro7nD02uFXGA73KBsJvaSTmGEqMz+ulSb+i g==; IronPort-SDR: lsw/RpoY+Og1AYFDO2vQAIJ6x/UUa4N+WxcTmlqTIEWPKJ+Tnb4Ji26zVkiemhHL64rZEITy16 z8E23cKpBjowUUL1gehIJNgw0yt80B9WK1sUaVzW1QrCwKTibbVNUUGU0HrwdvUmgUVU6LtoUq FylkgTiCYwftIjbkRkenU70YV5fELfVapAUHHuFjg/WNhFrbnhE/avSyFs8chTbTzkbTbLTGm7 eyXcJLSpGZs+WvX2bzCsxemMT22quL+lP1UqL70+4pULqPrHN6xX20tiMrRURtag98gFZNV6GQ JCU= X-IronPort-AV: E=Sophos;i="5.79,375,1602518400"; d="scan'208";a="159483502" Received: from uls-op-cesaip01.wdc.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 26 Jan 2021 10:26:04 +0800 IronPort-SDR: Nq+72Ti/JXAMvJ+15nYOcpYgUgnWYT0rnJY4k9NJa1g9We/Dm9Np8kctCVhuaCkX8voegpLpIE uGxHCftCyH6ziZxF8zsDhHJVSCWGYQ3FFm5hiUhUNoD20Fe72qZY3wwfCEyFOhcW8rxiXwjEMb Hewjq/0OyrMGBHZxv1B7BcYANnXJABBXfKwyirYGhNXsdD24MwURTOOD2OimMAhp40LogRQkGu O+NaMjQFyHri6Kf73OsoFWmYVIkqlaVwdzBBZFUmfELz5CG5fuPx0e3UjSd5Jz4+3lxHAKHodA XYnl38rcKCHGDwx1rW1ok6IE Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jan 2021 18:10:31 -0800 IronPort-SDR: rDrtun07R3GdynqfAyO+viUrPAJg8nAlh2+MkkpTtcHGBggLcTHmw50M9T/gRRnbTF1wwOqIwo gw268IU1AURbVAxcmL8fuC+AFWB+lnR1R41dVJIdJx3T4WYpgUiV730GIhQz4f4+kY9qZA82hS r5Un9bE70NoebBbI6ep9FnGrGG/dsWGO8AwaDnC+V1e6z5yDiTbuRhYbywNt+j7IJn+bKAUZhj 1xqhjGlpWYPyqHvlRlRBNeD3kOmc9ODgjpj+VAlEH6Yc2ISCiUL8+V76x4G+mMjL4i1u6rmdMZ LeQ= WDCIronportException: Internal Received: from naota.dhcp.fujisawa.hgst.com ([10.149.52.155]) by uls-op-cesaip02.wdc.com with ESMTP; 25 Jan 2021 18:26:02 -0800 From: Naohiro Aota To: linux-btrfs@vger.kernel.org, dsterba@suse.com Cc: hare@suse.com, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , "Darrick J. Wong" , Naohiro Aota , Josef Bacik Subject: [PATCH v14 03/42] btrfs: defer loading zone info after opening trees Date: Tue, 26 Jan 2021 11:24:41 +0900 Message-Id: X-Mailer: git-send-email 2.27.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org This is preparation patch to implement zone emulation on a regular device. To emulate zoned mode on a regular (non-zoned) device, we need to decide an emulating zone size. Instead of making it compile-time static value, we'll make it configurable at mkfs time. Since we have one zone == one device extent restriction, we can determine the emulated zone size from the size of a device extent. We can extend btrfs_get_dev_zone_info() to show a regular device filled with conventional zones once the zone size is decided. The current call site of btrfs_get_dev_zone_info() during the mount process is earlier than reading the trees, so we can't slice a regular device to conventional zones. This patch defers the loading of zone info to open_ctree() to load the emulated zone size from a device extent. Reviewed-by: Josef Bacik Signed-off-by: Naohiro Aota Reviewed-by: Anand Jain --- fs/btrfs/disk-io.c | 13 +++++++++++++ fs/btrfs/volumes.c | 4 ---- fs/btrfs/zoned.c | 24 ++++++++++++++++++++++++ fs/btrfs/zoned.h | 7 +++++++ 4 files changed, 44 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 5473bed6a7e8..39cbe10a81b6 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3257,6 +3257,19 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device if (ret) goto fail_tree_roots; + /* + * Get zone type information of zoned block devices. This will also + * handle emulation of the zoned mode for btrfs if a regular device has + * the zoned incompat feature flag set. + */ + ret = btrfs_get_dev_zone_info_all_devices(fs_info); + if (ret) { + btrfs_err(fs_info, + "failed to read device zone info: %d", + ret); + goto fail_block_groups; + } + /* * If we have a uuid root and we're not being told to rescan we need to * check the generation here so we can set the diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index badb972919eb..bb3f341f6a22 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -669,10 +669,6 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices, clear_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state); device->mode = flags; - ret = btrfs_get_dev_zone_info(device); - if (ret != 0) - goto error_free_page; - fs_devices->open_devices++; if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state) && device->devid != BTRFS_DEV_REPLACE_DEVID) { diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c index c38846659019..bcabdb2c97f1 100644 --- a/fs/btrfs/zoned.c +++ b/fs/btrfs/zoned.c @@ -143,6 +143,30 @@ static int btrfs_get_dev_zones(struct btrfs_device *device, u64 pos, return 0; } +int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info) +{ + struct btrfs_fs_devices *fs_devices = fs_info->fs_devices; + struct btrfs_device *device; + int ret = 0; + + if (!btrfs_fs_incompat(fs_info, ZONED)) + return 0; + + mutex_lock(&fs_devices->device_list_mutex); + list_for_each_entry(device, &fs_devices->devices, dev_list) { + /* We can skip reading of zone info for missing devices */ + if (!device->bdev) + continue; + + ret = btrfs_get_dev_zone_info(device); + if (ret) + break; + } + mutex_unlock(&fs_devices->device_list_mutex); + + return ret; +} + int btrfs_get_dev_zone_info(struct btrfs_device *device) { struct btrfs_zoned_device_info *zone_info = NULL; diff --git a/fs/btrfs/zoned.h b/fs/btrfs/zoned.h index 8abe2f83272b..5e0e7de84a82 100644 --- a/fs/btrfs/zoned.h +++ b/fs/btrfs/zoned.h @@ -25,6 +25,7 @@ struct btrfs_zoned_device_info { #ifdef CONFIG_BLK_DEV_ZONED int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos, struct blk_zone *zone); +int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info); int btrfs_get_dev_zone_info(struct btrfs_device *device); void btrfs_destroy_dev_zone_info(struct btrfs_device *device); int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info); @@ -42,6 +43,12 @@ static inline int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos, return 0; } +static inline int btrfs_get_dev_zone_info_all_devices( + struct btrfs_fs_info *fs_info) +{ + return 0; +} + static inline int btrfs_get_dev_zone_info(struct btrfs_device *device) { return 0;