From patchwork Sun Dec 17 16:53:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13495922 X-Patchwork-Delegate: snitzer@redhat.com Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 EA9D246550; Sun, 17 Dec 2023 16:54:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="A8QiNrYJ" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=KlChkldQeuhwg4sxIRC77ivEjvHivSeAsGBLr02m6Wc=; b=A8QiNrYJJbfUqc7JdOr6skrvzo nm5wo6AewBrtor0R3qDFAUAV9HlX1yOpRqpF0O5BlElQumPtwm7vxXmjcOVeBJfYbYbABo1B+oQEd BUIGYmNhA2uRPOEAxQp+oZ9kU0g53+ZZD4dU80h5RiQq7EuhD03SHLGJEnAlotzLzOHh9hi6u0h4p 55oFWl+69jtZntJHoZsIAaGlgHUE7vDrq1ezeAaJwG56gt8dCyY8kjTWRSbUn8A4PMIoQDkhJI65t FVb6UG7Iedu5Hn0UBSDfKl543zXrGYnXEQVm72mkFNmGVDW26HfrpJwbzpG3PUnEyj9eRwNPYRLgh Cxe/01WA==; Received: from [88.128.92.84] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1rEuP2-0088Lm-1m; Sun, 17 Dec 2023 16:54:09 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Paolo Bonzini , Stefan Hajnoczi , Damien Le Moal , "Martin K. Petersen" , dm-devel@lists.linux.dev, linux-kernel@vger.kernel.org, virtualization@lists.linux.dev, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Subject: [PATCH 2/5] virtio_blk: remove the broken zone revalidation support Date: Sun, 17 Dec 2023 17:53:56 +0100 Message-Id: <20231217165359.604246-3-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231217165359.604246-1-hch@lst.de> References: <20231217165359.604246-1-hch@lst.de> Precedence: bulk X-Mailing-List: dm-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html virtblk_revalidate_zones is called unconditionally from virtblk_config_changed_work from the virtio config_changed callback. virtblk_revalidate_zones is a bit odd in that it re-clears the zoned state for host aware or non-zoned devices, which isn't needed unless the zoned mode changed - but a zone mode change to a host managed model isn't handled at all, and virtio_blk also doesn't handle any other config change except for a capacity change is handled (and even if it was the upper layers above virtio_blk wouldn't handle it very well). But even the useful case of a size change that would add or remove zones isn't handled properly as blk_revalidate_disk_zones expects the device capacity to cover all zones, but the capacity is only updated after virtblk_revalidate_zones. As this code appears to be entirely untested and is getting in the way remove it for now, but it can be readded in a fixed version with proper test coverage if needed. Fixes: 95bfec41bd3d ("virtio-blk: add support for zoned block devices") Fixes: f1ba4e674feb ("virtio-blk: fix to match virtio spec") Signed-off-by: Christoph Hellwig Reviewed-by: Damien Le Moal Reviewed-by: Stefan Hajnoczi --- drivers/block/virtio_blk.c | 26 -------------------------- 1 file changed, 26 deletions(-) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index aeead732a24dc9..a28f1687066bb4 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -722,27 +722,6 @@ static int virtblk_report_zones(struct gendisk *disk, sector_t sector, return ret; } -static void virtblk_revalidate_zones(struct virtio_blk *vblk) -{ - u8 model; - - virtio_cread(vblk->vdev, struct virtio_blk_config, - zoned.model, &model); - switch (model) { - default: - dev_err(&vblk->vdev->dev, "unknown zone model %d\n", model); - fallthrough; - case VIRTIO_BLK_Z_NONE: - case VIRTIO_BLK_Z_HA: - disk_set_zoned(vblk->disk, BLK_ZONED_NONE); - return; - case VIRTIO_BLK_Z_HM: - WARN_ON_ONCE(!vblk->zone_sectors); - if (!blk_revalidate_disk_zones(vblk->disk, NULL)) - set_capacity_and_notify(vblk->disk, 0); - } -} - static int virtblk_probe_zoned_device(struct virtio_device *vdev, struct virtio_blk *vblk, struct request_queue *q) @@ -823,10 +802,6 @@ static int virtblk_probe_zoned_device(struct virtio_device *vdev, */ #define virtblk_report_zones NULL -static inline void virtblk_revalidate_zones(struct virtio_blk *vblk) -{ -} - static inline int virtblk_probe_zoned_device(struct virtio_device *vdev, struct virtio_blk *vblk, struct request_queue *q) { @@ -982,7 +957,6 @@ static void virtblk_config_changed_work(struct work_struct *work) struct virtio_blk *vblk = container_of(work, struct virtio_blk, config_work); - virtblk_revalidate_zones(vblk); virtblk_update_capacity(vblk, true); }