On Sun 18-09-16 12:04:47, zhong jiang wrote:
[...]
> index 5048083..72dc475 100644
> --- a/mm/ksm.c
> +++ b/mm/ksm.c
> @@ -299,7 +299,7 @@ static inline void free_rmap_item(struct rmap_item *rmap_item)
>
> static inline struct stable_node *alloc_stable_node(void)
> {
> - return kmem_cache_alloc(stable_node_cache, GFP_KERNEL);
> + return kmem_cache_alloc(stable_node_cache, __GFP_HIGH);
> }
I do not want to speak for Hugh but I believe he meant something
different. The above will grant access to memory reserves but it doesn't
wake kswapd nor the direct reclaim. I guess he meant GFP_KERNEL | __GFP_HIGH
--
Michal Hocko
SUSE Labs
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