KAMEZAWA Hiroyuki cc926f7842 memcg: move charges to root cgroup if use_hierarchy=0 ... Presently, at removal of cgroup, ->pre_destroy() is called and moves charges to the parent cgroup. A major reason for returning -EBUSY from ->pre_destroy() is that the 'moving' hits the parent's resource limitation. It happens only when use_hierarchy=0. Considering use_hierarchy=0, all cgroups should be flat. So, no one cannot justify moving charges to parent...parent and children are in flat configuration, not hierarchical. This patch modifes the code to move charges to the root cgroup at rmdir/force_empty if use_hierarchy==0. This will much simplify rmdir() and reduce error in ->pre_destroy. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ying Han <yinghan@google.com> Cc: Glauber Costa <glommer@parallels.com> Reviewed-by: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2012-05-29 16:22:27 -07:00
..
backing-dev.c	backing-dev: fix wakeup timer races with bdi_unregister()	2012-02-01 16:52:49 +08:00
bootmem.c	mm/bootmem.c: cleanup on addition to bootmem data list	2012-05-29 16:22:24 -07:00
bounce.c	mm: remove the second argument of k[un]map_atomic()	2012-03-20 21:48:27 +08:00
cleancache.c	mm: cleancache: Use __read_mostly as appropiate.	2012-01-23 16:08:09 -05:00
compaction.c	mm: remove lru type checks from __isolate_lru_page()	2012-05-29 16:22:25 -07:00
debug-pagealloc.c
dmapool.c
fadvise.c
failslab.c
filemap.c	mm: move readahead syscall to mm/readahead.c	2012-05-29 16:22:23 -07:00
filemap_xip.c	mm/filemap_xip.c: fix race condition in xip_file_fault()	2012-02-03 16:16:41 -08:00
fremap.c
highmem.c
huge_memory.c	mm, thp: drop page_table_lock to uncharge memcg pages	2012-05-29 16:22:20 -07:00
hugetlb.c	hugetlb: fix resv_map leak in error path	2012-05-29 16:22:24 -07:00
hwpoison-inject.c
init-mm.c
internal.h	mm: compaction: handle incorrect MIGRATE_UNMOVABLE type pageblocks	2012-05-29 16:22:22 -07:00
Kconfig	Cross Memory Attach: make it Kconfigurable	2012-05-29 16:22:20 -07:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c	ksm: cleanup: introduce find_mergeable_vma()	2012-03-21 17:54:59 -07:00
maccess.c
madvise.c	mm/fs: route MADV_REMOVE to FALLOC_FL_PUNCH_HOLE	2012-05-29 16:22:22 -07:00
Makefile	Cross Memory Attach: make it Kconfigurable	2012-05-29 16:22:20 -07:00
memblock.c	mm/memblock: fix memory leak on extending regions	2012-05-29 16:22:24 -07:00
memcontrol.c	memcg: move charges to root cgroup if use_hierarchy=0	2012-05-29 16:22:27 -07:00
memory-failure.c	mm/memory_failure: let the compiler add the function name	2012-05-29 16:22:18 -07:00
memory.c	thp, memcg: split hugepage for memcg oom on cow	2012-05-29 16:22:19 -07:00
memory_hotplug.c	mm: print physical addresses consistently with other parts of kernel	2012-05-29 16:22:21 -07:00
mempolicy.c	mm: do_migrate_pages(): rename arguments	2012-05-29 16:22:20 -07:00
mempool.c
migrate.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2012-05-23 17:42:39 -07:00
mincore.c	mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode	2012-03-21 17:54:54 -07:00
mlock.c	vm: avoid using find_vma_prev() unnecessarily	2012-03-06 18:23:36 -08:00
mm_init.c
mmap.c	mm/mmap.c: find_vma(): remove unnecessary if(mm) check	2012-05-29 16:22:19 -07:00
mmu_context.c	mm, counters: remove task argument to sync_mm_rss() and __sync_task_rss_stat()	2012-03-21 17:54:59 -07:00
mmu_notifier.c
mmzone.c	mm: add link from struct lruvec to struct zone	2012-05-29 16:22:26 -07:00
mprotect.c	Merge branch 'akpm' (Andrew's patch-bomb)	2012-03-22 09:04:48 -07:00
mremap.c	mm: collapse security_vm_enough_memory() variants into a single function	2012-02-14 10:45:39 +11:00
msync.c
nobootmem.c	mm: remove sparsemem allocation details from the bootmem allocator	2012-05-29 16:22:22 -07:00
nommu.c	kill mm argument of vm_munmap()	2012-04-21 01:58:20 -04:00
oom_kill.c	mm, oom: normalize oom scores to oom_score_adj scale only for userspace	2012-05-29 16:22:24 -07:00
page-writeback.c	writeback: initialize global_dirty_limit	2012-05-06 13:41:58 +08:00
page_alloc.c	mm: add link from struct lruvec to struct zone	2012-05-29 16:22:26 -07:00
page_cgroup.c	page_cgroup: fix horrid swap accounting regression	2012-03-06 08:18:23 -08:00
page_io.c
page_isolation.c	mm: page_isolation: MIGRATE_CMA isolation functions added	2012-05-21 15:09:33 +02:00
pagewalk.c	mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode	2012-03-21 17:54:54 -07:00
percpu-km.c
percpu-vm.c
percpu.c	kmemleak: Fix the kmemleak tracking of the percpu areas with !SMP	2012-05-09 10:13:29 -07:00
pgtable-generic.c	arch/tile: allow building Linux with transparent huge pages enabled	2012-05-25 12:48:21 -04:00
prio_tree.c
process_vm_access.c	Fix race in process_vm_rw_core	2012-02-02 12:55:17 -08:00
quicklist.c
readahead.c	mm: move readahead syscall to mm/readahead.c	2012-05-29 16:22:23 -07:00
rmap.c	mm: remove swap token code	2012-05-29 16:22:19 -07:00
shmem.c	tmpfs: support SEEK_DATA and SEEK_HOLE	2012-05-29 16:22:23 -07:00
slab.c	Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2012-03-28 15:04:26 -07:00
slob.c
slub.c	slub: missing test for partial pages flush work in flush_all()	2012-05-17 18:00:51 -07:00
sparse-vmemmap.c
sparse.c	mm: remove sparsemem allocation details from the bootmem allocator	2012-05-29 16:22:22 -07:00
swap.c	mm/memcg: move reclaim_stat into lruvec	2012-05-29 16:22:25 -07:00
swap_state.c	mm: fix s390 BUG by __set_page_dirty_no_writeback on swap	2012-04-23 18:19:22 -07:00
swapfile.c	memcg: fix/change behavior of shared anon at moving task	2012-05-29 16:22:24 -07:00
truncate.c	mm/fs: remove truncate_range	2012-05-29 16:22:23 -07:00
util.c	procfs: mark thread stack correctly in proc/<pid>/maps	2012-03-21 17:54:58 -07:00
vmalloc.c	mm: fix faulty initialization in vmalloc_init()	2012-05-29 16:22:24 -07:00
vmscan.c	mm/vmscan: kill struct mem_cgroup_zone	2012-05-29 16:22:27 -07:00
vmstat.c	mm/vmstat.c: remove debug fs entries on failure of file creation and made extfrag_debug_root dentry local	2012-05-29 16:22:19 -07:00