From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8ED7B304BB5; Tue, 4 Nov 2025 21:27:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762291628; cv=none; b=KoTRXH8QukNMZAKQiq/Wj5obDHHG19WmZ71W7bW3ItL0eX6fiA84f2Fl8A8VecmEUviY3P7rfQNo+VdO+y1ssb259XpjnCcv7rYZUlQ43ayd4eI8YLs4/4v3kEKw5SU/Oh1qB0aJ45vpiJUKjag4F/Gpi9e8HqF/Zx3P66ygTR4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762291628; c=relaxed/simple; bh=OQJzlNo20cxcnEk3FJgiDo6Dfxs8oL2XA0KXotU9jrQ=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=t85S2Yo7TqkdVuwOK5vovhMIYnOVObGVVtSHJCd+gFN1Nlb7EcWUDK3cclZOaDCJJgF74+k5q+8vR6yTF2wAdpbDN2YePrenFwXpbF9la4iQNVMMssABXZ8P6qsO93M/IHfeH5pj0q/6bUrr82cf+iOJMirSbIiS8J9q2/12z+w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lDsbMl2I; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="lDsbMl2I" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 56E1BC4CEF8; Tue, 4 Nov 2025 21:27:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762291626; bh=OQJzlNo20cxcnEk3FJgiDo6Dfxs8oL2XA0KXotU9jrQ=; h=From:To:Subject:Date:In-Reply-To:References:From; b=lDsbMl2Ib95UWzVMEszHNVW0LZ/UQVhAG+7vl4sAaW1//W859fe04tmmAL4eLHg7c GaWplzCjr3z9cPOImzf8OPTBIGFKA5LXZGTA0fNLgE2HRZPF2UkmvUAkY0Kn6S/uSx qO/cmb8v878KjoCFCVI1X6S3MhdJNSGoS7jA3FVrvG5SSNfLylmdQwlNE2JL7RqIuP xVhT5AV/HkmBfFyHSH5e/2DUxH4FdgKzN8YPiEP2gOI7hzf67XKLxBHJfD3+zmuAhV a2lR3akvoElHY5EvhrhacYCbH9SdZdUkZNp3ddaYR8va2X3KTO57rOK/2tumhhOrQ/ SaRLUg+iM16XQ== From: Damien Le Moal To: Jens Axboe , linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, Keith Busch , Christoph Hellwig , dm-devel@lists.linux.dev, Mike Snitzer , Mikulas Patocka , "Martin K . Petersen" , linux-scsi@vger.kernel.org, linux-xfs@vger.kernel.org, Carlos Maiolino , linux-btrfs@vger.kernel.org, David Sterba Subject: [PATCH v4 14/15] btrfs: use blkdev_report_zones_cached() Date: Wed, 5 Nov 2025 06:22:48 +0900 Message-ID: <20251104212249.1075412-15-dlemoal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251104212249.1075412-1-dlemoal@kernel.org> References: <20251104212249.1075412-1-dlemoal@kernel.org> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Modify btrfs_get_dev_zones() and btrfs_sb_log_location_bdev() to replace the call to blkdev_report_zones() with blkdev_report_zones_cached() to speed-up mount operations. btrfs_get_dev_zone_info() is also modified to take into account the BLK_ZONE_COND_ACTIVE condition, which is equivalent to either BLK_ZONE_COND_IMP_OPEN, BLK_ZONE_COND_EXP_OPEN or BLK_ZONE_COND_CLOSED. With this change, mounting a freshly formatted large capacity (30 TB) SMR HDD completes under 100ms compared to over 1.8s before. Signed-off-by: Damien Le Moal Acked-by: David Sterba Reviewed-by: Johannes Thumshirn --- fs/btrfs/zoned.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c index 0ea0df18a8e4..a16b1a896c78 100644 --- a/fs/btrfs/zoned.c +++ b/fs/btrfs/zoned.c @@ -264,8 +264,8 @@ static int btrfs_get_dev_zones(struct btrfs_device *device, u64 pos, } } - ret = blkdev_report_zones(device->bdev, pos >> SECTOR_SHIFT, *nr_zones, - copy_zone_info_cb, zones); + ret = blkdev_report_zones_cached(device->bdev, pos >> SECTOR_SHIFT, + *nr_zones, copy_zone_info_cb, zones); if (ret < 0) { btrfs_err(device->fs_info, "zoned: failed to read zone %llu on %s (devid %llu)", @@ -494,6 +494,7 @@ int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache) case BLK_ZONE_COND_IMP_OPEN: case BLK_ZONE_COND_EXP_OPEN: case BLK_ZONE_COND_CLOSED: + case BLK_ZONE_COND_ACTIVE: __set_bit(nreported, zone_info->active_zones); nactive++; break; @@ -896,9 +897,9 @@ int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw, if (sb_zone + 1 >= nr_zones) return -ENOENT; - ret = blkdev_report_zones(bdev, zone_start_sector(sb_zone, bdev), - BTRFS_NR_SB_LOG_ZONES, copy_zone_info_cb, - zones); + ret = blkdev_report_zones_cached(bdev, zone_start_sector(sb_zone, bdev), + BTRFS_NR_SB_LOG_ZONES, + copy_zone_info_cb, zones); if (ret < 0) return ret; if (unlikely(ret != BTRFS_NR_SB_LOG_ZONES)) -- 2.51.0