[PATCH] slub: Don't throw away partial remote slabs if there is no local memory
cl at linux.com
Sat Jan 25 02:50:17 EST 2014
On Fri, 24 Jan 2014, Wanpeng Li wrote:
> >diff --git a/mm/slub.c b/mm/slub.c
> >index 545a170..a1c6040 100644
> >--- a/mm/slub.c
> >+++ b/mm/slub.c
> >@@ -1700,6 +1700,9 @@ static void *get_partial(struct kmem_cache *s, gfp_t flags, int node,
> > void *object;
> > int searchnode = (node == NUMA_NO_NODE) ? numa_node_id() : node;
This needs to be numa_mem_id() and numa_mem_id would need to be
> >+ if (!node_present_pages(searchnode))
> >+ searchnode = numa_mem_id();
Probably wont need that?
> > object = get_partial_node(s, get_node(s, searchnode), c, flags);
> > if (object || node != NUMA_NO_NODE)
> > return object;
> The bug still can't be fixed w/ this patch.
Some more detail would be good. If memory is requested from a particular
node then it would be best to use one that has memory. Callers also may
have used numa_node_id() and that also would need to be fixed.
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