diff options
| -rw-r--r-- | mm/page_cgroup.c | 58 |
1 files changed, 36 insertions, 22 deletions
diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c index 6c3f7a6..8e7577c 100644 --- a/mm/page_cgroup.c +++ b/mm/page_cgroup.c @@ -130,7 +130,38 @@ struct page *lookup_cgroup_page(struct page_cgroup *pc) return page; } -/* __alloc_bootmem...() is protected by !slab_available() */ +static void *__init_refok alloc_page_cgroup(size_t size, int nid) +{ + void *addr = NULL; + + addr = alloc_pages_exact(size, GFP_KERNEL | __GFP_NOWARN); + if (addr) + return addr; + + if (node_state(nid, N_HIGH_MEMORY)) + addr = vmalloc_node(size, nid); + else + addr = vmalloc(size); + + return addr; +} + +#ifdef CONFIG_MEMORY_HOTPLUG +static void free_page_cgroup(void *addr) +{ + if (is_vmalloc_addr(addr)) { + vfree(addr); + } else { + struct page *page = virt_to_page(addr); + if (!PageReserved(page)) { /* Is bootmem ? */ + size_t table_size = + sizeof(struct page_cgroup) * PAGES_PER_SECTION; + free_pages_exact(addr, table_size); + } + } +} +#endif + static int __init_refok init_section_page_cgroup(unsigned long pfn) { struct page_cgroup *base, *pc; @@ -147,17 +178,8 @@ 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()); - 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); - } else { - base = kmalloc(table_size, GFP_KERNEL | __GFP_NOWARN); - if (!base) - base = vmalloc(table_size); - } + base = alloc_page_cgroup(table_size, nid); + /* * The value stored in section->page_cgroup is (base - pfn) * and it does not point to the memory block allocated above, @@ -189,16 +211,8 @@ void __free_page_cgroup(unsigned long pfn) if (!ms || !ms->page_cgroup) return; base = ms->page_cgroup + pfn; - if (is_vmalloc_addr(base)) { - vfree(base); - ms->page_cgroup = NULL; - } else { - struct page *page = virt_to_page(base); - if (!PageReserved(page)) { /* Is bootmem ? */ - kfree(base); - ms->page_cgroup = NULL; - } - } + free_page_cgroup(base); + ms->page_cgroup = NULL; } int __meminit online_page_cgroup(unsigned long start_pfn, |