tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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page_cgroup should ignore empty nodes

Fix a total bootup freeze on ia64.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Tested-by: Li Zefan <lizf@cn.fujitsu.com>
Reported-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

authored by KAMEZAWA Hiroyuki and committed by Linus Torvalds 653d22c0 cc616860

+3
unified split
+3
mm/page_cgroup.c
··· 49 49 start_pfn = NODE_DATA(nid)->node_start_pfn; 50 50 nr_pages = NODE_DATA(nid)->node_spanned_pages; 51 51 52 + if (!nr_pages) 53 + return 0; 54 + 52 55 table_size = sizeof(struct page_cgroup) * nr_pages; 53 56 54 57 base = __alloc_bootmem_node_nopanic(NODE_DATA(nid),