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author | Christoph Hellwig <hch@lst.de> | 2023-12-17 17:53:56 +0100 |
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committer | Jens Axboe <axboe@kernel.dk> | 2023-12-19 20:17:43 -0700 |
commit | a971ed8002110f211899279cd7295756d263b771 (patch) | |
tree | c4056ba17dfe3a194c52bd25cab69a0db1bb44ad | |
parent | 77360cadaae562f437b3e98dc3af748d8d75bdc2 (diff) | |
download | linux-a971ed8002110f211899279cd7295756d263b771.tar.gz linux-a971ed8002110f211899279cd7295756d263b771.tar.bz2 linux-a971ed8002110f211899279cd7295756d263b771.zip |
virtio_blk: remove the broken zone revalidation support
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 <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20231217165359.604246-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
-rw-r--r-- | drivers/block/virtio_blk.c | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index aeead732a24d..a28f1687066b 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -722,27 +722,6 @@ fail_report: 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); } |