提交 f52407ce 编写于 作者: S Shaohua Li 提交者: Linus Torvalds

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: NShaohua Li <shaohua.li@intel.com>
Signed-off-by: NYakui Zhao <yakui.zhao@intel.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 8e7e40d9
......@@ -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
......
......@@ -48,8 +48,14 @@ void * __meminit vmemmap_alloc_block(unsigned long size, int node)
{
/* If the main allocator is up use that, fallback to bootmem. */
if (slab_is_available()) {
struct page *page = alloc_pages_node(node,
struct page *page;
if (node_state(node, N_HIGH_MEMORY))
page = alloc_pages_node(node,
GFP_KERNEL | __GFP_ZERO, get_order(size));
else
page = alloc_pages(GFP_KERNEL | __GFP_ZERO,
get_order(size));
if (page)
return page_address(page);
return NULL;
......
......@@ -62,9 +62,12 @@ static struct mem_section noinline __init_refok *sparse_index_alloc(int nid)
unsigned long array_size = SECTIONS_PER_ROOT *
sizeof(struct mem_section);
if (slab_is_available())
section = kmalloc_node(array_size, GFP_KERNEL, nid);
else
if (slab_is_available()) {
if (node_state(nid, N_HIGH_MEMORY))
section = kmalloc_node(array_size, GFP_KERNEL, nid);
else
section = kmalloc(array_size, GFP_KERNEL);
} else
section = alloc_bootmem_node(NODE_DATA(nid), array_size);
if (section)
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册