Commit 99e6fa0053 for qemu.org

commit 99e6fa0053ba1b1454b8c4446f857c430547a702
Merge: c5fee4d93f dd3efac4c2
Author: Richard Henderson <richard.henderson@linaro.org>
Date:   Tue Nov 3 10:54:31 2026 -0800

    Merge tag 'pull-nbd-2026-11-02' of https://gitlab.com/ebblake/qemu into staging

    block patches through 2026-11-02

    - Denis V. Lunev: honor block size change on scsi child
    - Denis V. Lunev: cheaper zero handling in backup/commit

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    * tag 'pull-nbd-2026-11-02' of https://gitlab.com/ebblake/qemu:
      block/block-copy: coalesce write-zeroes tasks
      util/co-shared-resource: skip the mutex for an empty request
      block/block-copy: replace zero_bitmap_valid with scan_done
      block/block-copy: merge the two backup scan steps into block_copy_prescan()
      block/block-copy: rename block_copy_is_cluster_allocated()
      block/backup: pre-fill zero_bitmap for full/bitmap
      block/block-copy: track known-zero source clusters
      block/block-copy: extract block_copy_set_task_method()
      iotests/124: cover backup of zero clusters and holes
      block/commit: batch block-status queries
      iotests/040: cover large and fragmented commit runs
      block/commit: pass BDRV_WANT_PRECISE to block-status
      tests/qemu-iotests/qom-set-drive: replace with a differently sized node
      tests/qtest/virtio-scsi: cover a replacement that changes the size
      scsi-disk: refresh the cached capacity from the resize callback
      block: notify the parent when a replaced child has a different size

    Signed-off-by: Richard Henderson <richard.henderson@linaro.org>