Re: [PATCH 3/5] mm/slab: Do not call kmalloc_large() for unsupported size

From: Matthew Wilcox
Date: Mon Feb 21 2022 - 10:53:53 EST


On Mon, Feb 21, 2022 at 10:53:34AM +0000, Hyeonggon Yoo wrote:
> SLAB's kfree() does not support freeing an object that is allocated from
> kmalloc_large(). Fix this as SLAB do not pass requests larger than
> KMALLOC_MAX_CACHE_SIZE directly to page allocator.

I was wondering if we wanted to go in the other direction and get rid of
kmalloc cache sizes larger than, say, 64kB from the SLAB allocator.