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| author | Wei Yang <richard.weiyang@gmail.com> | 2022-03-23 00:47:06 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-23 01:57:10 +0300 |
| commit | 8c9bb39816f01a309d30243da0ca91bd7e7bd1c2 (patch) | |
| tree | 426ab18554e8580ca5643529bec7771873de9a62 /mm/memcontrol.c | |
| parent | 7c30daac20698cb035255089c896f230982b085e (diff) | |
| download | linux-8c9bb39816f01a309d30243da0ca91bd7e7bd1c2.tar.xz | |
memcg: do not tweak node in alloc_mem_cgroup_per_node_info
alloc_mem_cgroup_per_node_info is allocated for each possible node and
this used to be a problem because !node_online nodes didn't have
appropriate data structure allocated. This has changed by "mm: handle
uninitialized numa nodes gracefully" so we can drop the special casing
here.
Link: https://lkml.kernel.org/r/20220127085305.20890-7-mhocko@kernel.org
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Michal Hocko <mhocko@suse.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Alexey Makhalov <amakhalov@vmware.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Nico Pache <npache@redhat.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Rafael Aquini <raquini@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memcontrol.c')
| -rw-r--r-- | mm/memcontrol.c | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 33ad13d69bda..f5ad1a680494 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -5020,18 +5020,8 @@ struct mem_cgroup *mem_cgroup_from_id(unsigned short id) static int alloc_mem_cgroup_per_node_info(struct mem_cgroup *memcg, int node) { struct mem_cgroup_per_node *pn; - int tmp = node; - /* - * This routine is called against possible nodes. - * But it's BUG to call kmalloc() against offline node. - * - * TODO: this routine can waste much memory for nodes which will - * never be onlined. It's better to use memory hotplug callback - * function. - */ - if (!node_state(node, N_NORMAL_MEMORY)) - tmp = -1; - pn = kzalloc_node(sizeof(*pn), GFP_KERNEL, tmp); + + pn = kzalloc_node(sizeof(*pn), GFP_KERNEL, node); if (!pn) return 1; |