On Mon, 2019-02-18 at 14:43 +0100, Greg Kroah-Hartman wrote:
> 4.20-stable review patch.  If anyone has any objections, please let
> me know.
> 
> ------------------
> 
> From: Dave Chinner <dchinner@redhat.com>
> 
> commit a9a238e83fbb0df31c3b9b67003f8f9d1d1b6c96 upstream.
> 
> This reverts commit 172b06c32b9497 ("mm: slowly shrink slabs with a
> relatively small number of objects").

This revert will result in the slab caches of dead
cgroups with a small number of remaining objects never
getting reclaimed, which can be a memory leak in some
configurations.

But hey, that's your tradeoff to make.

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