Rob Bradford ad3dbcd130 virtio-devices: Use SmallVec for descriptor chains ...

Rather than instantiating a vector for parsing the descriptor chain in
advance instead use a SmallVec bounded by the expected length of the
descriptor chain. This removes vector allocations from those paths.

As smallvec was already a block dependency move it to a workspace
dependency and use it from there.

Fixes: #5079

Signed-off-by: Rob Bradford <rbradford@meta.com>

2026-07-08 02:15:19 +00:00

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