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Kirill Tkhai 7e97de0b03 memcg: remove memcg_cgroup::id from IDR on mem_cgroup_css_alloc() failure 
In case of memcg_online_kmem() failure, memcg_cgroup::id remains hashed
in mem_cgroup_idr even after memcg memory is freed.  This leads to leak
of ID in mem_cgroup_idr.

This patch adds removal into mem_cgroup_css_alloc(), which fixes the
problem.  For better readability, it adds a generic helper which is used
in mem_cgroup_alloc() and mem_cgroup_id_put_many() as well.

Link: http://lkml.kernel.org/r/152354470916.22460.14397070748001974638.stgit@localhost.localdomain
Fixes 73f576c04b94 ("mm: memcontrol: fix cgroup creation failure after many small jobs")
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-08-02 16:03:40 -07:00
..
kasan
kasan: fix shadow_size calculation error in kasan_module_alloc
2018-07-03 17:32:19 -07:00
backing-dev.c
bdi: Fix another oops in wb_workfn()
2018-06-22 12:08:07 -06:00
balloon_compaction.c
virtio_balloon: fix deadlock on OOM
2017-11-14 23:57:38 +02:00
bootmem.c
mm: docs: fix parameter names mismatch
2018-02-06 18:32:48 -08:00
cleancache.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
cma_debug.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
cma.c
Revert "mm/cma: manage the memory of the CMA area by using the ZONE_MOVABLE"
2018-05-24 10:07:50 -07:00
cma.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compaction.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
debug_page_ref.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
debug.c
mm: teach dump_page() to correctly output poisoned struct pages
2018-07-03 17:32:19 -07:00
dmapool.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
early_ioremap.c
mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep
2017-12-11 14:54:44 +01:00
fadvise.c
mm: add ksys_fadvise64_64() helper; remove in-kernel call to sys_fadvise64_64()
2018-04-02 20:16:10 +02:00
failslab.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
filemap.c
mm: use new return type vm_fault_t
2018-06-07 17:34:36 -07:00
frame_vector.c
mm/frame_vector.c: release a semaphore in 'get_vaddr_frames()'
2017-12-14 16:00:48 -08:00
frontswap.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
gup_benchmark.c
treewide: kvzalloc() -> kvcalloc()
2018-06-12 16:19:22 -07:00
gup.c
mm: do not bug_on on incorrect length in __mm_populate()
2018-07-14 11:11:10 -07:00
highmem.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
hmm.c
mm: introduce MEMORY_DEVICE_FS_DAX and CONFIG_DEV_PAGEMAP_OPS
2018-05-22 06:59:39 -07:00
huge_memory.c
mm/huge_memory.c: fix data loss when splitting a file pmd
2018-07-21 12:50:46 -07:00
hugetlb_cgroup.c
mm: rename page_counter's count/limit into usage/max
2018-06-07 17:34:35 -07:00
hugetlb.c
mm: hugetlb: yield when prepping struct pages
2018-07-03 17:32:19 -07:00
hwpoison-inject.c
mm/memory_failure: Remove unused trapno from memory_failure
2018-01-23 12:17:42 -06:00
init-mm.c
mm: introduce arg_lock to protect arg_start|end and env_start|end in mm_struct
2018-06-07 17:34:34 -07:00
internal.h
Changes for 4.18:
2018-06-05 13:24:20 -07:00
interval_tree.c
mm/interval_tree.c: use vma_pages() helper
2018-01-31 17:18:37 -08:00
Kconfig
libnvdimm for 4.18
2018-06-08 17:21:52 -07:00
Kconfig.debug
kmemcheck: rip it out
2017-11-15 18:21:05 -08:00
khugepaged.c
page cache: use xa_lock
2018-04-11 10:28:39 -07:00
kmemleak-test.c
…
kmemleak.c
mm: kernel-doc: add missing parameter descriptions
2018-04-05 21:36:27 -07:00
ksm.c
mm/ksm.c: ignore STABLE_FLAG of rmap_item->address in rmap_walk_ksm()
2018-06-15 07:55:23 +09:00
list_lru.c
mm: make counting of list_lru_one::nr_items lockless
2018-04-05 21:36:27 -07:00
maccess.c
mm: docs: fix parameter names mismatch
2018-02-06 18:32:48 -08:00
madvise.c
mm/memory_failure: Remove unused trapno from memory_failure
2018-01-23 12:17:42 -06:00
Makefile
mm: restructure memfd code
2018-06-07 17:34:35 -07:00
memblock.c
mm/memblock: add missing include <linux/bootmem.h>
2018-07-21 12:50:46 -07:00
memcontrol.c
memcg: remove memcg_cgroup::id from IDR on mem_cgroup_css_alloc() failure
2018-08-02 16:03:40 -07:00
memfd.c
mm: restructure memfd code
2018-06-07 17:34:35 -07:00
memory_hotplug.c
mm: move is_pageblock_removable_nolock() to mm/memory_hotplug.c
2018-06-07 17:34:36 -07:00
memory-failure.c
mm, migrate: remove reason argument from new_page_t
2018-04-11 10:28:32 -07:00
memory.c
mm: delete historical BUG from zap_pmd_range()
2018-08-01 12:23:45 -07:00
mempolicy.c
mm: use vma_init() to initialize VMAs on stack and data segments
2018-07-26 19:38:03 -07:00
mempool.c
mempool: Add mempool_init()/mempool_exit()
2018-05-14 13:14:23 -06:00
memtest.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
migrate.c
mm: migrate: fix double call of radix_tree_replace_slot()
2018-05-11 17:28:45 -07:00
mincore.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mlock.c
mm, mlock, vmscan: no more skipping pagevecs
2018-02-21 15:35:42 -08:00
mm_init.c
…
mmap.c
mm: fix vma_is_anonymous() false-positives
2018-07-26 19:38:03 -07:00
mmu_context.c
sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>
2017-03-02 08:42:38 +01:00
mmu_notifier.c
mm, mmu_notifier: annotate mmu notifiers with blockable invalidate callbacks
2018-01-31 17:18:38 -08:00
mmzone.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mprotect.c
sched/numa: avoid trapping faults and attempting migration of file-backed dirty pages
2018-04-11 10:28:31 -07:00
mremap.c
mremap: remove LATENCY_LIMIT from mremap to reduce the number of TLB shootdowns
2018-06-15 07:55:24 +09:00
msync.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nobootmem.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nommu.c
mm: fix vma_is_anonymous() false-positives
2018-07-26 19:38:03 -07:00
oom_kill.c
mm: fix oom_kill event handling
2018-06-15 07:55:25 +09:00
page_alloc.c
mm: don't do zero_resv_unavail if memmap is not allocated
2018-07-16 09:41:57 -07:00
page_counter.c
memcg: introduce memory.min
2018-06-07 17:34:36 -07:00
page_ext.c
mm/page_ext.c: make page_ext_init a noop when CONFIG_PAGE_EXTENSION but nothing uses it
2018-01-31 17:18:39 -08:00
page_idle.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
page_io.c
block: convert to bio_first_bvec_all & bio_first_page_all
2018-01-06 09:18:00 -07:00
page_isolation.c
mm, migrate: remove reason argument from new_page_t
2018-04-11 10:28:32 -07:00
page_owner.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
page_poison.c
mm/page_poison.c: make early_page_poison_param() __init
2018-04-05 21:36:26 -07:00
page_vma_mapped.c
mm, page_vma_mapped: Introduce pfn_in_hpage()
2018-01-22 12:15:57 -08:00
page-writeback.c
writeback: safer lock nesting
2018-04-20 17:18:35 -07:00
pagewalk.c
mm: kernel-doc: add missing parameter descriptions
2018-04-05 21:36:27 -07:00
percpu-internal.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
percpu-km.c
percpu: allow select gfp to be passed to underlying allocators
2018-02-18 05:33:01 -08:00
percpu-stats.c
treewide: Use array_size() in vmalloc()
2018-06-12 16:19:22 -07:00
percpu-vm.c
percpu: allow select gfp to be passed to underlying allocators
2018-02-18 05:33:01 -08:00
percpu.c
arch: remove obsolete architecture ports
2018-04-02 20:20:12 -07:00
pgtable-generic.c
mm: do not lose dirty and accessed bits in pmdp_invalidate()
2018-01-31 17:18:38 -08:00
process_vm_access.c
mm: docs: add blank lines to silence sphinx "Unexpected indentation" errors
2018-02-06 18:32:48 -08:00
quicklist.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
readahead.c
mm: split ->readpages calls to avoid non-contiguous pages lists
2018-06-01 18:37:32 -07:00
rmap.c
mm: do not drop unused pages when userfaultd is running
2018-07-14 11:11:09 -07:00
rodata_test.c
mm: fix RODATA_TEST failure "rodata_test: test data was not read only"
2017-10-03 17:54:24 -07:00
shmem.c
mm: use vma_init() to initialize VMAs on stack and data segments
2018-07-26 19:38:03 -07:00
slab_common.c
slub: fix failure when we delete and create a slab cache
2018-06-28 11:16:44 -07:00
slab.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
slab.h
slab, slub: skip unnecessary kasan_cache_shutdown()
2018-04-05 21:36:24 -07:00
slob.c
slab: __GFP_ZERO is incompatible with a constructor
2018-06-07 17:34:34 -07:00
slub.c
slub: fix failure when we delete and create a slab cache
2018-06-28 11:16:44 -07:00
sparse-vmemmap.c
mm: merge vmem_altmap_alloc into altmap_alloc_block_buf
2018-01-08 11:46:23 -08:00
sparse.c
mm/sparse.c: pass the __highest_present_section_nr + 1 to alloc_func()
2018-06-07 17:34:35 -07:00
swap_cgroup.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
swap_slots.c
treewide: kvzalloc() -> kvcalloc()
2018-06-12 16:19:22 -07:00
swap_state.c
treewide: kvzalloc() -> kvcalloc()
2018-06-12 16:19:22 -07:00
swap.c
mm: introduce MEMORY_DEVICE_FS_DAX and CONFIG_DEV_PAGEMAP_OPS
2018-05-22 06:59:39 -07:00
swapfile.c
mm/swapfile.c: fix swap_count comment about nonexistent SWAP_HAS_CONT
2018-06-15 07:55:23 +09:00
truncate.c
page cache: use xa_lock
2018-04-11 10:28:39 -07:00
usercopy.c
usercopy: WARN() on slab cache usercopy region violations
2018-01-15 12:07:48 -08:00
userfaultfd.c
userfaultfd: prevent non-cooperative events vs mcopy_atomic races
2018-06-07 17:34:38 -07:00
util.c
mm: kvmalloc does not fallback to vmalloc for incompatible gfp flags
2018-06-07 17:34:38 -07:00
vmacache.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
vmalloc.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
vmpressure.c
mm/vmpressure.c: convert to use match_string() helper
2018-06-07 17:34:36 -07:00
vmscan.c
memcg: introduce memory.min
2018-06-07 17:34:36 -07:00
vmstat.c
Revert mm/vmstat.c: fix vmstat_update() preemption BUG
2018-06-28 11:16:44 -07:00
workingset.c
page cache: use xa_lock
2018-04-11 10:28:39 -07:00
z3fold.c
z3fold: fix reclaim lock-ups
2018-05-11 17:28:45 -07:00
zbud.c
mm: docs: fix parameter names mismatch
2018-02-06 18:32:48 -08:00
zpool.c
mm/zpool.c: zpool_evictable: fix mismatch in parameter name and kernel-doc
2018-02-21 15:35:43 -08:00
zsmalloc.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
zswap.c
zswap: re-check zswap_is_full() after do zswap_shrink()
2018-07-26 19:38:03 -07:00