Subject: + mm-zswap-numa-aware-allocation-for-zswap_dstmem.patch added to -mm tree To: edumazet@xxxxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Tue, 27 May 2014 13:50:29 -0700 The patch titled Subject: mm/zswap: NUMA aware allocation for zswap_dstmem has been added to the -mm tree. Its filename is mm-zswap-numa-aware-allocation-for-zswap_dstmem.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/mm-zswap-numa-aware-allocation-for-zswap_dstmem.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/mm-zswap-numa-aware-allocation-for-zswap_dstmem.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Eric Dumazet <edumazet@xxxxxxxxxx> Subject: 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 <edumazet@xxxxxxxxxx> Seth Jennings <sjennings@xxxxxxxxxxxxxx> David Rientjes <rientjes@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/zswap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN mm/zswap.c~mm-zswap-numa-aware-allocation-for-zswap_dstmem mm/zswap.c --- a/mm/zswap.c~mm-zswap-numa-aware-allocation-for-zswap_dstmem +++ a/mm/zswap.c @@ -347,7 +347,7 @@ static int __zswap_cpu_notifier(unsigned 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); _ Patches currently in -mm which might be from edumazet@xxxxxxxxxx are mm-zswap-numa-aware-allocation-for-zswap_dstmem.patch linux-next.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html