Johannes Weiner 0b8f73e104 mm: memcontrol: clean up alloc, online, offline, free functions ... The creation and teardown of struct mem_cgroup is fairly messy and that has attracted mistakes and subtle bugs before. The main cause for this is that there is no clear model about what needs to happen when, and that attracts more chaos. So create one: 1. mem_cgroup_alloc() should allocate struct mem_cgroup and its auxiliary members and initialize work items, locks etc. so that the object it returns is fully initialized and in a neutral state. 2. mem_cgroup_css_alloc() will use mem_cgroup_alloc() to obtain a new memcg object and configure it and the system according to the role of the new memory-controlled cgroup in the hierarchy. 3. mem_cgroup_css_online() is no longer needed to synchronize with iterators, but it verifies css->id which isn't available earlier. 4. mem_cgroup_css_offline() implements stuff that needs to happen upon the user-visible destruction of a cgroup, which includes stopping all user interfacing as well as releasing certain structures when continued memory consumption would be unexpected at that point. 5. mem_cgroup_css_free() prepares the system and the memcg object for the object's disappearance, neutralizes its state, and then gives it back to mem_cgroup_free(). 6. mem_cgroup_free() releases struct mem_cgroup and auxiliary memory. [arnd@arndb.de: fix SLOB build regression] Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Vladimir Davydov <vdavydov@virtuozzo.com> Cc: Michal Hocko <mhocko@suse.cz> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2016-01-20 17:09:18 -08:00
..
kasan	UBSAN: run-time undefined behavior sanity checker	2016-01-20 17:09:18 -08:00
backing-dev.c	mm: memcontrol: export root_mem_cgroup	2016-01-14 16:00:49 -08:00
balloon_compaction.c	virtio_balloon: fix race between migration and ballooning	2016-01-12 20:47:06 +02:00
bootmem.c	x86/mm: Introduce max_possible_pfn	2015-12-06 12:46:31 +01:00
cleancache.c
cma_debug.c
cma.c	mm/cma.c: suppress warning	2015-11-05 19:34:48 -08:00
cma.h
compaction.c	mm/compaction.c: __compact_pgdat() code cleanuup	2016-01-14 16:00:49 -08:00
debug-pagealloc.c
debug.c	mm: rework mapcount accounting to enable 4k mapping of THPs	2016-01-15 17:56:32 -08:00
dmapool.c	mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd	2015-11-06 17:50:42 -08:00
early_ioremap.c	mm/early_ioremap: use offset_in_page macro	2015-11-05 19:34:48 -08:00
fadvise.c
failslab.c	mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM	2015-11-06 17:50:42 -08:00
filemap.c	mm: differentiate page_mapped() from page_mapcount() for compound pages	2016-01-15 17:56:32 -08:00
frame_vector.c	mm: fix docbook comment for get_vaddr_frames()	2015-11-05 19:34:48 -08:00
frontswap.c
gup.c	mm: bring in additional flag for fixup_user_fault to signal unlock	2016-01-15 17:56:32 -08:00
highmem.c
huge_memory.c	thp: fix interrupt unsafe locking in split_huge_page()	2016-01-20 17:09:18 -08:00
hugetlb_cgroup.c	mm: make compound_head() robust	2015-11-06 17:50:42 -08:00
hugetlb.c	mm: rework mapcount accounting to enable 4k mapping of THPs	2016-01-15 17:56:32 -08:00
hwpoison-inject.c	hwpoison: use page_cgroup_ino for filtering by memcg	2015-09-10 13:29:01 -07:00
init-mm.c
internal.h	thp: reintroduce split_huge_page()	2016-01-15 17:56:32 -08:00
interval_tree.c
Kconfig	mm: re-enable THP	2016-01-15 17:56:32 -08:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c	Revert "gfp: add __GFP_NOACCOUNT"	2016-01-14 16:00:49 -08:00
ksm.c	mm/ksm.c: mark stable page dirty	2016-01-15 17:56:32 -08:00
list_lru.c	mm: memcontrol: move kmem accounting code to CONFIG_MEMCG	2016-01-20 17:09:18 -08:00
maccess.c	mm/maccess.c: actually return -EFAULT from strncpy_from_unsafe	2015-11-05 19:34:48 -08:00
madvise.c	mm/huge_memory.c: don't split THP page when MADV_FREE syscall is called	2016-01-15 17:56:32 -08:00
Makefile	media updates for v4.3-rc1	2015-09-11 16:42:39 -07:00
memblock.c	mm/memblock: introduce for_each_memblock_type()	2016-01-14 16:00:49 -08:00
memcontrol.c	mm: memcontrol: clean up alloc, online, offline, free functions	2016-01-20 17:09:18 -08:00
memory_hotplug.c	x86, mm: introduce vmem_altmap to augment vmemmap_populate()	2016-01-15 17:56:32 -08:00
memory-failure.c	mm: soft-offline: exit with failure for non anonymous thp	2016-01-15 17:56:32 -08:00
memory.c	mm, dax: dax-pmd vs thp-pmd vs hugetlbfs-pmd	2016-01-15 17:56:32 -08:00
mempolicy.c	mm: mempolicy: skip non-migratable VMAs when setting MPOL_MF_LAZY	2016-01-15 17:56:32 -08:00
mempool.c	mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd	2015-11-06 17:50:42 -08:00
memtest.c
migrate.c	thp: introduce deferred_split_huge_page()	2016-01-15 17:56:32 -08:00
mincore.c	mm, thp: remove infrastructure for handling splitting PMDs	2016-01-15 17:56:32 -08:00
mlock.c	mm/mlock.c: change can_do_mlock return value type to boolean	2016-01-15 17:56:32 -08:00
mm_init.c
mmap.c	mm: fix locking order in mm_take_all_locks()	2016-01-15 17:56:32 -08:00
mmu_context.c
mmu_notifier.c	mmu-notifier: add clear_young callback	2015-09-10 13:29:01 -07:00
mmzone.c	mm/mmzone.c: memmap_valid_within() can be boolean	2016-01-14 16:00:49 -08:00
mprotect.c	mm, dax: dax-pmd vs thp-pmd vs hugetlbfs-pmd	2016-01-15 17:56:32 -08:00
mremap.c	mm, thp: remove infrastructure for handling splitting PMDs	2016-01-15 17:56:32 -08:00
msync.c	mm/msync: use offset_in_page macro	2015-11-05 19:34:48 -08:00
nobootmem.c	x86/mm: Introduce max_possible_pfn	2015-12-06 12:46:31 +01:00
nommu.c	kmemcg: account certain kmem allocations to memcg	2016-01-14 16:00:49 -08:00
oom_kill.c	mm, shmem: add internal shmem resident memory accounting	2016-01-14 16:00:49 -08:00
page_alloc.c	mm/page_alloc.c: remove unused struct zone *z variable	2016-01-15 17:56:32 -08:00
page_counter.c	mm: page_counter: let page_counter_try_charge() return bool	2015-11-05 19:34:48 -08:00
page_ext.c	mm: introduce idle page tracking	2015-09-10 13:29:01 -07:00
page_idle.c	mm: add page_check_address_transhuge() helper	2016-01-15 17:56:32 -08:00
page_io.c
page_isolation.c	mm/page_isolation: do some cleanup in "undo_isolate_page_range"	2016-01-15 17:56:32 -08:00
page_owner.c
page-writeback.c	mm: page_alloc: generalize the dirty balance reserve	2016-01-14 16:00:49 -08:00
pagewalk.c	thp: rename split_huge_page_pmd() to split_huge_pmd()	2016-01-15 17:56:32 -08:00
percpu-km.c
percpu-vm.c
percpu.c	mm/percpu: use offset_in_page macro	2015-11-05 19:34:48 -08:00
pgtable-generic.c	mm, dax: dax-pmd vs thp-pmd vs hugetlbfs-pmd	2016-01-15 17:56:32 -08:00
process_vm_access.c	ptrace: use fsuid, fsgid, effective creds for fs access checks	2016-01-20 17:09:18 -08:00
quicklist.c
readahead.c	mm: move lru_to_page to mm_inline.h	2016-01-14 16:00:49 -08:00
rmap.c	mm: fix locking order in mm_take_all_locks()	2016-01-15 17:56:32 -08:00
shmem.c	memcg: adjust to support new THP refcounting	2016-01-15 17:56:32 -08:00
slab_common.c	mm: memcontrol: move kmem accounting code to CONFIG_MEMCG	2016-01-20 17:09:18 -08:00
slab.c	mm/slab.c: add a helper function get_first_slab	2016-01-14 16:00:49 -08:00
slab.h	mm: memcontrol: move kmem accounting code to CONFIG_MEMCG	2016-01-20 17:09:18 -08:00
slob.c	slab/slub: adjust kmem_cache_alloc_bulk API	2015-11-22 11:58:44 -08:00
slub.c	mm: memcontrol: move kmem accounting code to CONFIG_MEMCG	2016-01-20 17:09:18 -08:00
sparse-vmemmap.c	x86, mm: introduce vmem_altmap to augment vmemmap_populate()	2016-01-15 17:56:32 -08:00
sparse.c	x86, mm: introduce vmem_altmap to augment vmemmap_populate()	2016-01-15 17:56:32 -08:00
swap_cgroup.c
swap_state.c	mm: support madvise(MADV_FREE)	2016-01-15 17:56:32 -08:00
swap.c	mm, x86: get_user_pages() for dax mappings	2016-01-15 17:56:32 -08:00
swapfile.c	mm: make swapoff more robust against soft dirty	2016-01-15 17:56:32 -08:00
truncate.c
userfaultfd.c	memcg: adjust to support new THP refcounting	2016-01-15 17:56:32 -08:00
util.c	proc read mm's {arg,env}_{start,end} with mmap semaphore taken.	2016-01-20 17:09:18 -08:00
vmacache.c	mm/vmacache: inline vmacache_valid_mm()	2015-11-05 19:34:48 -08:00
vmalloc.c	mm/vmalloc.c: use macro IS_ALIGNED to judge the aligment	2016-01-15 17:56:32 -08:00
vmpressure.c	mm: memcontrol: rein in the CONFIG space madness	2016-01-20 17:09:18 -08:00
vmscan.c	mm: memcontrol: give the kmem states more descriptive names	2016-01-20 17:09:18 -08:00
vmstat.c	mm: support madvise(MADV_FREE)	2016-01-15 17:56:32 -08:00
workingset.c
zbud.c	mm/zbud.c: use list_last_entry() instead of list_tail_entry()	2016-01-15 11:40:52 -08:00
zpool.c	mm: zsmalloc: constify struct zs_pool name	2015-11-06 17:50:42 -08:00
zsmalloc.c	zsmalloc: fix migrate_zspage-zs_free race condition	2016-01-20 17:09:18 -08:00
zswap.c	mm/zswap: change incorrect strncmp use to strcmp	2015-12-18 14:25:40 -08:00