KAMEZAWA Hiroyuki 52dbb90509 memcg: fix race at move_parent around compound_order() ...

A fix up mem_cgroup_move_parent() which use compound_order() in
asynchronous manner.  This compound_order() may return unknown value
because we don't take lock.  Use PageTransHuge() and HPAGE_SIZE instead
of it.

Also clean up for mem_cgroup_move_parent().
 - remove unnecessary initialization of local variable.
 - rename charge_size -> page_size
 - remove unnecessary (wrong) comment.
 - added a comment about THP.

Note:
 Current design take compound_page_lock() in caller of move_account().
 This should be revisited when we implement direct move_task of hugepage
 without splitting.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2011-01-26 10:50:04 +10:00

..

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

x86, memblock: Replace e820_/_early string with memblock_

2010-08-27 11:13:47 -07:00

bounce.c

bounce: call flush_dcache_page() after bounce_copy_vec()

2010-09-09 18:57:25 -07:00

compaction.c

mm: compaction: prevent division-by-zero during user-requested compaction

2011-01-20 17:02:05 -08:00

debug-pagealloc.c

generic debug pagealloc

2009-04-01 08:59:13 -07:00

dmapool.c

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

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

fadvise.c

readahead: introduce FMODE_RANDOM for POSIX_FADV_RANDOM

2010-03-06 11:26:25 -08:00

failslab.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

filemap_xip.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

filemap.c

mm: remove likely() from grab_cache_page_write_begin()

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

fremap.c

Avoid pgoff overflow in remap_file_pages

2010-09-25 09:34:58 -07:00

highmem.c

mm,x86: fix kmap_atomic_push vs ioremap_32.c

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

huge_memory.c

memcg: fix USED bit handling at uncharge in THP

2011-01-20 17:02:06 -08:00

hugetlb.c

hugetlb: fix handling of parse errors in sysfs

2011-01-13 17:32:49 -08:00

hwpoison-inject.c

HWPOISON, hugetlb: support hwpoison injection for hugepage

2010-08-11 09:23:11 +02:00

init-mm.c

mm: provide init_mm mm_context initializer

2010-08-09 20:44:54 -07:00

internal.h

Revert "mm: batch activate_page() to reduce lock contention"

2011-01-17 14:42:19 -08:00

Kconfig

mm: compaction: don't depend on HUGETLB_PAGE

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

Kconfig.debug

trivial: improve help text for mm debug config options

2009-09-21 15:14:57 +02:00

kmemcheck.c

kmemcheck: Fix build errors due to missing slab.h

2010-03-30 22:02:32 +09:00

kmemleak-test.c

percpu: clean up percpu variable definitions

2009-06-24 15:13:48 +09:00

kmemleak.c

kmemleak: Fix typo in the comment

2010-08-08 21:57:23 +01:00

ksm.c

ksm: drain pagevecs to lru

2011-01-13 17:32:49 -08:00

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

thp: transparent hugepage core

2011-01-13 17:32:42 -08:00

memblock.c

memblock: fix memblock_is_region_memory()

2011-01-20 17:02:05 -08:00

memcontrol.c

memcg: fix race at move_parent around compound_order()

2011-01-26 10:50:04 +10:00

memory_hotplug.c

Merge branch 'slub/hotplug' into slab/urgent

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

memory-failure.c

thp: compound_trans_order

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

memory.c

thp: add debug checks for mapcount related invariants

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

mempolicy.c

thp: add numa awareness to hugepage allocations

2011-01-13 17:32:45 -08:00

mempool.c

mm: remove broken 'kzalloc' mempool

2009-09-22 07:17:35 -07:00

migrate.c

mm: migration: clarify migrate_pages() comment

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

mincore.c

thp: mincore transparent hugepage support

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

mlock.c

mlock: do not hold mmap_sem for extended periods of time

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

mm_init.c

mm: mminit_loglevel cannot be __meminitdata anymore

2008-08-20 15:40:30 -07:00

mmap.c

brk: fix min_brk lower bound computation for COMPAT_BRK

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

mmu_context.c

exit: fix oops in sync_mm_rss

2010-03-24 16:31:21 -07:00

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

thp: split_huge_page_mm/vma

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

msync.c

sanitize vfs_fsync calling conventions

2010-05-21 18:31:21 -04:00

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: kill all threads sharing oom killed task's mm

2010-10-26 16:52:05 -07:00

page_alloc.c

mm: clear pages_scanned only if draining a pcp adds pages to the buddy allocator

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

page_cgroup.c

kmemleak: Annotate false positive in init_section_page_cgroup()

2010-07-19 11:54:14 +01:00

page_io.c

block: unify flags for struct bio and struct request

2010-08-07 18:20:39 +02:00

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: avoid unnecessary determine_dirtyable_memory call

2011-01-13 17:32:38 -08:00

pagewalk.c

thp: split_huge_page_mm/vma

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

percpu-km.c

percpu: clear memory allocated with the km allocator

2010-10-02 10:28:42 +03:00

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

spelling fixes: mm/

2007-10-20 01:27:18 +02:00

quicklist.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

readahead.c

readahead.c: fix comment

2010-05-25 08:07:00 -07:00

rmap.c

memcg: create extensible page stat update routines

2011-01-13 17:32:50 -08:00

shmem.c

fs: icache RCU free inodes

2011-01-07 17:50:26 +11:00

slab.c

mm/slab.c: make local symbols static

2011-01-15 13:28:36 +02:00

slob.c

kernel: kmem_ptr_validate considered harmful

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

slub.c

Merge branch 'slub/hotplug' into slab/urgent

2011-01-15 13:28:17 +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

Revert "mm: simplify code of swap.c"

2011-01-17 14:42:34 -08:00

swapfile.c

thp: split_huge_page paging

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

thrash.c

mm: pass mm to grab_swap_token

2009-06-23 12:50:05 -07:00

truncate.c

mm: fix truncate_setsize() comment

2011-01-20 17:02:06 -08:00

util.c

kernel: kmem_ptr_validate considered harmful

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

vmalloc.c

Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6

2011-01-13 20:15:35 -08:00

vmscan.c

mm: fix deferred congestion timeout if preferred zone is not allowed

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

vmstat.c

thp: transparent hugepage vmstat

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