mm/zswap: NUMA aware allocation for zswap_dstmem

zswap_dstmem is a percpu block of memory, which should be allocated using kmalloc_node(), to get better NUMA locality. Without it, all the blocks are allocated from a single node. Signed-off-by: Eric Dumazet <[email protected]> Acked-by: Seth Jennings <[email protected]> Acked-by: David Rientjes <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
sum-it · Jun 4, 2014 · 72d0963 · 72d0963
1 parent d867f20
commit 72d0963
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/mm/zswap.c b/mm/zswap.c
@@ -347,7 +347,7 @@ static int __zswap_cpu_notifier(unsigned long action, unsigned long cpu)
 			return NOTIFY_BAD;
 		}
 		*per_cpu_ptr(zswap_comp_pcpu_tfms, cpu) = tfm;
-		dst = kmalloc(PAGE_SIZE * 2, GFP_KERNEL);
+		dst = kmalloc_node(PAGE_SIZE * 2, GFP_KERNEL, cpu_to_node(cpu));
 		if (!dst) {
 			pr_err("can't allocate compressor buffer\n");
 			crypto_free_comp(tfm);