Re: [RFC PATCH v2] SLUB: enhance slub to handle memory nodes without normal memory
From: Christoph Lameter <hidden>
Date: 2012-07-24 14:46:04
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On Tue, 24 Jul 2012, Jiang Liu wrote:
quoted hunk ↗ jump to hunk
diff --git a/mm/slub.c b/mm/slub.c index 8c691fa..3976745 100644 --- a/mm/slub.c +++ b/mm/slub.c@@ -2803,6 +2803,17 @@ static inline int alloc_kmem_cache_cpus(struct kmem_cache *s) static struct kmem_cache *kmem_cache_node; +static bool node_has_normal_memory(int node) +{ + int i; + + for (i = ZONE_NORMAL; i >= 0; i--) + if (populated_zone(&NODE_DATA(node)->node_zones[i])) + return true; + + return false; +}
There is already a N_NORMAL_MEMORY node map that contains a list of node that have *normal* memory usable by slab allocators etc. I think the cleanest solution would be to clear the corresponding node bits for your special movable only zones. Then you wont be needing to modify other subsystems anymore. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>