Re: [PATCH] vmalloc: add __alloc_vm_area() for optimizing vmap stack

[Andy Lutomirski]

On Fri, Oct 6, 2017 at 4:35 AM, Konstantin Khlebnikov
<khlebnikov@xxxxxxxxxxxxxx> wrote:
> This same as __vmalloc_node_range() but returns vm_struct rather than
> virtual address. This allows to kill one call of find_vm_area() for
> each task stack allocation for CONFIG_VMAP_STACK=y.
>
> And fix comment about that task holds cache of vm area: this cache used
> for retrieving actual stack pages, freeing is done by vfree_deferred().

Nice!