cdc4377591
Probably doesn't fix anything but those should be accessed in an
atomic way just like the head pointer.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: e4f01eca3b ("util: Add a free list structure for use with util_sparse_array")
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4613>