Re: [PATCH v2 2/6] Revert "gfp: add __GFP_NOACCOUNT"

Johannes Weiner
2015-11-19T18:59:43Z

On Tue, Nov 10, 2015 at 09:34:03PM +0300, Vladimir Davydov wrote:
> This reverts commit 8f4fc071b1926d0b20336e2b3f8ab85c94c734c5.
>
> Black-list kmem accounting policy (aka __GFP_NOACCOUNT) turned out to be
> fragile and difficult to maintain, because there seem to be many more
> allocations that should not be accounted than those that should be.
> Besides, false accounting an allocation might result in much worse
> consequences than not accounting at all, namely increased memory
> consumption due to pinned dead kmem caches.
>
> So it was decided to switch to the white-list policy. This patch reverts
> bits introducing the black-list policy. The white-list policy will be
> introduced later in the series.
>
> Signed-off-by: Vladimir Davydov <vdavydov@virtuozzo.com>

Acked-by: Johannes Weiner <hannes@cmpxchg.org>