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authorShaohua Li <shaohua.li@intel.com>2009-09-21 17:01:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-22 07:17:26 -0700
commitf52407ce2deac76c87abc8211a63ea152ba72d54 (patch)
tree6e3976fae721bd178d68d11750f7ad7f86d8feca /mm/page_cgroup.c
parent8e7e40d9658cf7b2ae2b76484e235799b3ddaa97 (diff)
downloadop-kernel-dev-f52407ce2deac76c87abc8211a63ea152ba72d54.zip
op-kernel-dev-f52407ce2deac76c87abc8211a63ea152ba72d54.tar.gz
memory hotplug: alloc page from other node in memory online
To initialize hotadded node, some pages are allocated. At that time, the node hasn't memory, this makes the allocation always fail. In such case, let's allocate pages from other nodes. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Yakui Zhao <yakui.zhao@intel.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_cgroup.c')
-rw-r--r--mm/page_cgroup.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c
index f22b4eb..3d535d5 100644
--- a/mm/page_cgroup.c
+++ b/mm/page_cgroup.c
@@ -116,10 +116,16 @@ static int __init_refok init_section_page_cgroup(unsigned long pfn)
nid = page_to_nid(pfn_to_page(pfn));
table_size = sizeof(struct page_cgroup) * PAGES_PER_SECTION;
VM_BUG_ON(!slab_is_available());
- base = kmalloc_node(table_size,
+ if (node_state(nid, N_HIGH_MEMORY)) {
+ base = kmalloc_node(table_size,
GFP_KERNEL | __GFP_NOWARN, nid);
- if (!base)
- base = vmalloc_node(table_size, nid);
+ if (!base)
+ base = vmalloc_node(table_size, nid);
+ } else {
+ base = kmalloc(table_size, GFP_KERNEL | __GFP_NOWARN);
+ if (!base)
+ base = vmalloc(table_size);
+ }
} else {
/*
* We don't have to allocate page_cgroup again, but
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