Johannes Weiner 6b3ae58efc memcg: remove direct page_cgroup-to-page pointer ...

In struct page_cgroup, we have a full word for flags but only a few are
reserved.  Use the remaining upper bits to encode, depending on
configuration, the node or the section, to enable page_cgroup-to-page
lookups without a direct pointer.

This saves a full word for every page in a system with memory cgroups
enabled.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2011-03-23 19:46:28 -07:00

..

backing-dev.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

2010-10-26 17:58:44 -07:00

bootmem.c

bootmem: Move contig_page_data definition to bootmem.c/nobootmem.c

2011-02-24 14:43:06 +01:00

bounce.c

…

compaction.c

mm: compaction: minimise the time IRQs are disabled while isolating pages for migration

2011-03-22 17:44:05 -07:00

debug-pagealloc.c

…

dmapool.c

mm/dmapool.c: use TASK_UNINTERRUPTIBLE in dma_pool_alloc()

2011-01-13 17:32:48 -08:00

fadvise.c

…

failslab.c

…

filemap_xip.c

…

filemap.c

mm: don't return 0 too early from find_get_pages()

2011-03-22 17:44:04 -07:00

fremap.c

…

highmem.c

mm,x86: fix kmap_atomic_push vs ioremap_32.c

2010-10-27 18:03:05 -07:00

huge_memory.c

mm: use __GFP_OTHER_NODE for transparent huge pages

2011-03-22 17:44:05 -07:00

hugetlb.c

hugetlbfs: correct handling of negative input to /proc/sys/vm/nr_hugepages

2011-03-22 17:44:04 -07:00

hwpoison-inject.c

…

init-mm.c

…

internal.h

mm: export __get_user_pages

2011-03-17 13:08:27 -03:00

Kconfig

mm: compaction: don't depend on HUGETLB_PAGE

2011-01-26 10:50:02 +10:00

Kconfig.debug

mm: debug-pagealloc: fix kconfig dependency warning

2011-03-22 17:44:02 -07:00

kmemcheck.c

…

kmemleak-test.c

kmemleak: remove memset by using kzalloc

2011-01-27 18:31:51 +00:00

kmemleak.c

kmemleak: Allow kmemleak metadata allocations to fail

2011-01-27 18:32:06 +00:00

ksm.c

mm: rename drop_anon_vma() to put_anon_vma()

2011-03-22 17:44:03 -07:00

maccess.c

MN10300: Save frame pointer in thread_info struct rather than global var

2010-10-27 17:29:01 +01:00

madvise.c

thp: khugepaged: make khugepaged aware about madvise

2011-01-13 17:32:47 -08:00

Makefile

bootmem: Separate out CONFIG_NO_BOOTMEM code into nobootmem.c

2011-02-24 14:43:05 +01:00

memblock.c

mm/memblock: properly handle overlaps and fix error path

2011-03-22 17:44:09 -07:00

memcontrol.c

memcg: remove direct page_cgroup-to-page pointer

2011-03-23 19:46:28 -07:00

memory_hotplug.c

Merge branch 'slub/hotplug' into slab/urgent

2011-01-15 13:28:17 +02:00

memory-failure.c

mm: change __remove_from_page_cache()

2011-03-22 17:44:02 -07:00

memory.c

memcg: fix ugly initialization of return value is in caller

2011-03-23 19:46:22 -07:00

mempolicy.c

mempolicy: remove redundant check in __mpol_equal()

2011-03-22 17:44:04 -07:00

mempool.c

…

migrate.c

memcg: fix ugly initialization of return value is in caller

2011-03-23 19:46:22 -07:00

mincore.c

thp: mincore transparent hugepage support

2011-01-13 17:32:44 -08:00

mlock.c

mlock: operate on any regions with protection != PROT_NONE

2011-02-02 10:20:50 +11:00

mm_init.c

…

mmap.c

brk: fix min_brk lower bound computation for COMPAT_BRK

2011-01-13 17:32:48 -08:00

mmu_context.c

…

mmu_notifier.c

thp: mmu_notifier_test_young

2011-01-13 17:32:46 -08:00

mmzone.c

mm: page allocator: adjust the per-cpu counter threshold when memory is low

2011-01-13 17:32:31 -08:00

mprotect.c

thp: mprotect: transparent huge page support

2011-01-13 17:32:44 -08:00

mremap.c

mm: fix possible cause of a page_mapped BUG

2011-02-23 21:55:06 -08:00

msync.c

…

nobootmem.c

bootmem: Move __alloc_memory_core_early() to nobootmem.c

2011-02-24 14:43:06 +01:00

nommu.c

mlock: do not hold mmap_sem for extended periods of time

2011-01-13 17:32:36 -08:00

oom_kill.c

oom: suppress nodes that are not allowed from meminfo on oom kill

2011-03-22 17:44:01 -07:00

page_alloc.c

memcg: add memcg sanity checks at allocating and freeing pages

2011-03-23 19:46:25 -07:00

page_cgroup.c

memcg: remove direct page_cgroup-to-page pointer

2011-03-23 19:46:28 -07:00

page_io.c

…

page_isolation.c

mm: page_isolation: codeclean fix comment and rm unneeded val init

2010-10-26 16:52:11 -07:00

page-writeback.c

writeback: make mapping->writeback_index to point to the last written page

2011-03-22 17:44:09 -07:00

pagewalk.c

pagewalk: only split huge pages when necessary

2011-03-22 17:44:04 -07:00

percpu-km.c

…

percpu-vm.c

mm: remove gfp mask from pcpu_get_vm_areas

2011-01-13 17:32:34 -08:00

percpu.c

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2011-01-13 10:05:56 -08:00

pgtable-generic.c

mm/pgtable-generic.c: fix CONFIG_SWAP=n build

2011-01-26 10:49:58 +10:00

prio_tree.c

…

quicklist.c

…

readahead.c

…

rmap.c

mm: simplify anon_vma refcounts

2011-03-22 17:44:03 -07:00

shmem.c

shmem: let shared anonymous be nonlinear again

2011-03-22 17:44:09 -07:00

slab.c

mm: notifier_from_errno() cleanup

2011-03-22 17:44:01 -07:00

slob.c

mm: Remove support for kmem_cache_name()

2011-01-23 21:00:05 +02:00

slub.c

slub: Add statistics for this_cmpxchg_double failures

2011-03-22 20:48:04 +02:00

sparse-vmemmap.c

tree-wide: fix comment/printk typos

2010-11-01 15:38:34 -04:00

sparse.c

thp: remove PG_buddy

2011-01-13 17:32:43 -08:00

swap_state.c

thp: split_huge_page paging

2011-01-13 17:32:41 -08:00

swap.c

mm: simplify code of swap.c

2011-03-22 17:44:09 -07:00

swapfile.c

memcg: fix ugly initialization of return value is in caller

2011-03-23 19:46:22 -07:00

thrash.c

…

truncate.c

mm: deactivate invalidated pages

2011-03-22 17:44:03 -07:00

util.c

kernel: kmem_ptr_validate considered harmful

2011-01-07 17:50:16 +11:00

vmalloc.c

vmalloc: remove confusing comment on vwrite()

2011-03-22 17:44:09 -07:00

vmscan.c

mm: vmscan: kswapd should not free an excessive number of pages when balancing small zones

2011-03-22 17:44:04 -07:00

vmstat.c

mm: add __GFP_OTHER_NODE flag

2011-03-22 17:44:05 -07:00