[Devel] [PATCH 3/5] mm: vmscan: respect NUMA policy mask when shrinking slab on direct reclaim

[Andrew Morton]

On Sat, 11 Jan 2014 16:36:33 +0400 Vladimir Davydov <vdavydov at parallels.com> wrote:

> When direct reclaim is executed by a process bound to a set of NUMA
> nodes, we should scan only those nodes when possible, but currently we
> will scan kmem from all online nodes even if the kmem shrinker is NUMA
> aware. That said, binding a process to a particular NUMA node won't
> prevent it from shrinking inode/dentry caches from other nodes, which is
> not good. Fix this.

Seems right.  I worry that reducing the amount of shrinking which
node-bound processes perform might affect workloads in unexpected ways.

I think I'll save this one for 3.15-rc1, OK?