In the linear allocator, when a size larger than the minimum
buffer size is allocated, we currently create the new buffer
to fit exactly the requested size.
In that case, don't bother updating the `latest` pointer, since
this newly created buffer is already full. In the worst case,
the current `latest` is full and it would be the same; in the
best case, there's still room for small allocations, so we avoid
wasting space if the next allocations would fit.
Reviewed-by: Emma Anholt <emma@anholt.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25517>
Not comprehensive, but those were the ones used to work on the
previous linear_alloc changes. Also having a test already
set up lower the barrier to add more tests for future in case of
bugs.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25280>
