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authorChristoph Hellwig <hch@lst.de>2023-12-17 17:53:56 +0100
committerJens Axboe <axboe@kernel.dk>2023-12-20 04:17:43 +0100
commita971ed8002110f211899279cd7295756d263b771 (patch)
treec4056ba17dfe3a194c52bd25cab69a0db1bb44ad /drivers/block
parentvirtio_blk: cleanup zoned device probing (diff)
downloadlinux-a971ed8002110f211899279cd7295756d263b771.tar.xz
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>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/virtio_blk.c26
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);
}