Johannes Weiner 9f45717924 mm: memcontrol: fix warning when allocating the root cgroup ... Commit 3e38e0aaca ("mm: memcg: charge memcg percpu memory to the parent cgroup") adds memory tracking to the memcg kernel structures themselves to make cgroups liable for the memory they are consuming through the allocation of child groups (which can be significant). This code is a bit awkward as it's spread out through several functions: The outermost function does memalloc_use_memcg(parent) to set up current->active_memcg, which designates which cgroup to charge, and the inner functions pass GFP_ACCOUNT to request charging for specific allocations. To make sure this dependency is satisfied at all times - to make sure we don't randomly charge whoever is calling the functions - the inner functions warn on !current->active_memcg. However, this triggers a false warning when the root memcg itself is allocated. No parent exists in this case, and so current->active_memcg is rightfully NULL. It's a false positive, not indicative of a bug. Delete the warnings for now, we can revisit this later. Fixes: 3e38e0aaca ("mm: memcg: charge memcg percpu memory to the parent cgroup") Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Roman Gushchin <guro@fb.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2020-08-13 12:15:21 -07:00
..
kasan	Kbuild updates for v5.9	2020-08-09 14:10:26 -07:00
Kconfig	mm/sparse: cleanup the code surrounding memory_present()	2020-08-07 11:33:27 -07:00
Kconfig.debug	…
Makefile	mm: move lib/ioremap.c to mm/	2020-08-07 11:33:26 -07:00
backing-dev.c	…
balloon_compaction.c	…
cleancache.c	…
cma.c	cma: don't quit at first error when activating reserved areas	2020-08-12 10:57:57 -07:00
cma.h	mm: cma: fix the name of CMA areas	2020-08-12 10:57:57 -07:00
cma_debug.c	…
compaction.c	mm/compaction.c: delete duplicated word	2020-08-12 10:57:58 -07:00
debug.c	mm, dump_page: do not crash with bad compound_mapcount()	2020-08-07 11:33:23 -07:00
debug_page_ref.c	…
debug_vm_pgtable.c	Documentation/mm: add descriptions for arch page table helpers	2020-08-07 11:33:23 -07:00
dmapool.c	…
early_ioremap.c	…
fadvise.c	…
failslab.c	…
filemap.c	mm/filemap.c: delete duplicated word	2020-08-12 10:57:58 -07:00
frame_vector.c	…
frontswap.c	…
gup.c	mm/gup: remove task_struct pointer for all gup code	2020-08-12 10:58:04 -07:00
gup_benchmark.c	…
highmem.c	…
hmm.c	mm: do page fault accounting in handle_mm_fault	2020-08-12 10:58:02 -07:00
huge_memory.c	mm: thp: remove debug_cow switch	2020-08-12 10:57:57 -07:00
hugetlb.c	mm/hugetlb: make hugetlb migration callback CMA aware	2020-08-12 10:58:02 -07:00
hugetlb_cgroup.c	…
hwpoison-inject.c	…
init-mm.c	…
internal.h	mm/mempolicy: use a standard migration target allocation callback	2020-08-12 10:58:02 -07:00
interval_tree.c	…
ioremap.c	mm: move p?d_alloc_track to separate header file	2020-08-07 11:33:26 -07:00
khugepaged.c	mm/vmscan: protect the workingset on anonymous LRU	2020-08-12 10:57:55 -07:00
kmemleak-test.c	…
kmemleak.c	…
ksm.c	mm: do page fault accounting in handle_mm_fault	2020-08-12 10:58:02 -07:00
list_lru.c	…
maccess.c	uaccess: add force_uaccess_{begin,end} helpers	2020-08-12 10:57:59 -07:00
madvise.c	…
mapping_dirty_helpers.c	…
memblock.c	…
memcontrol.c	mm: memcontrol: fix warning when allocating the root cgroup	2020-08-13 12:15:21 -07:00
memfd.c	…
memory-failure.c	mm/migrate: introduce a standard migration target allocation function	2020-08-12 10:58:02 -07:00
memory.c	mm/gup: remove task_struct pointer for all gup code	2020-08-12 10:58:04 -07:00
memory_hotplug.c	mm/migrate: introduce a standard migration target allocation function	2020-08-12 10:58:02 -07:00
mempolicy.c	mm/mempolicy: use a standard migration target allocation callback	2020-08-12 10:58:02 -07:00
mempool.c	…
memremap.c	…
memtest.c	…
migrate.c	mm/mempolicy: use a standard migration target allocation callback	2020-08-12 10:58:02 -07:00
mincore.c	…
mlock.c	…
mm_init.c	mm: adjust vm_committed_as_batch according to vm overcommit policy	2020-08-07 11:33:26 -07:00
mmap.c	mm: remove unnecessary wrapper function do_mmap_pgoff()	2020-08-07 11:33:27 -07:00
mmu_gather.c	…
mmu_notifier.c	mm: mmu_notifier: fix and extend kerneldoc	2020-08-12 10:57:57 -07:00
mmzone.c	…
mprotect.c	…
mremap.c	mm/mremap: start addresses are properly aligned	2020-08-07 11:33:27 -07:00
msync.c	…
nommu.c	mm/nommu.c: delete duplicated words	2020-08-12 10:57:58 -07:00
oom_kill.c	mm, oom: show process exiting information in __oom_kill_process()	2020-08-12 10:57:56 -07:00
page-writeback.c	mm: remove vm_total_pages	2020-08-07 11:33:28 -07:00
page_alloc.c	mm/page_alloc: remove a wrapper for alloc_migration_target()	2020-08-12 10:58:02 -07:00
page_counter.c	mm/page_counter.c: fix protection usage propagation	2020-08-07 11:33:26 -07:00
page_ext.c	…
page_idle.c	…
page_io.c	mm/page_io.c: use blk_io_schedule() for avoiding task hung in sync io	2020-08-07 11:33:24 -07:00
page_isolation.c	mm/page_alloc: remove a wrapper for alloc_migration_target()	2020-08-12 10:58:02 -07:00
page_owner.c	…
page_poison.c	…
page_reporting.c	…
page_reporting.h	…
page_vma_mapped.c	…
pagewalk.c	…
percpu-internal.h	mm: memcg/percpu: account percpu memory to memory cgroups	2020-08-12 10:57:55 -07:00
percpu-km.c	mm: memcg/percpu: account percpu memory to memory cgroups	2020-08-12 10:57:55 -07:00
percpu-stats.c	mm: memcg/percpu: account percpu memory to memory cgroups	2020-08-12 10:57:55 -07:00
percpu-vm.c	mm: memcg/percpu: account percpu memory to memory cgroups	2020-08-12 10:57:55 -07:00
percpu.c	mm: memcg/percpu: per-memcg percpu memory statistics	2020-08-12 10:57:55 -07:00
pgalloc-track.h	mm: move p?d_alloc_track to separate header file	2020-08-07 11:33:26 -07:00
pgtable-generic.c	…
process_vm_access.c	mm/gup: remove task_struct pointer for all gup code	2020-08-12 10:58:04 -07:00
ptdump.c	…
readahead.c	…
rmap.c	hugetlbfs: remove call to huge_pte_alloc without i_mmap_rwsem	2020-08-12 10:57:56 -07:00
rodata_test.c	…
shmem.c	mm/shmem.c: delete duplicated word	2020-08-12 10:57:58 -07:00
shuffle.c	mm/shuffle: remove dynamic reconfiguration	2020-08-07 11:33:29 -07:00
shuffle.h	mm/shuffle: remove dynamic reconfiguration	2020-08-07 11:33:29 -07:00
slab.c	mm: slab: rename (un)charge_slab_page() to (un)account_slab_page()	2020-08-07 11:33:25 -07:00
slab.h	mm: slab: rename (un)charge_slab_page() to (un)account_slab_page()	2020-08-07 11:33:25 -07:00
slab_common.c	mm/slab_common.c: delete duplicated word	2020-08-12 10:57:58 -07:00
slob.c	mm: memcg: convert vmstat slab counters to bytes	2020-08-07 11:33:24 -07:00
slub.c	mm: slab: rename (un)charge_slab_page() to (un)account_slab_page()	2020-08-07 11:33:25 -07:00
sparse-vmemmap.c	mm/sparse: only sub-section aligned range would be populated	2020-08-07 11:33:27 -07:00
sparse.c	mm/sparse: cleanup the code surrounding memory_present()	2020-08-07 11:33:27 -07:00
swap.c	mm/vmscan: protect the workingset on anonymous LRU	2020-08-12 10:57:55 -07:00
swap_cgroup.c	…
swap_slots.c	mm/swap_slots.c: remove redundant check for swap_slot_cache_initialized	2020-08-07 11:33:24 -07:00
swap_state.c	mm/swap: implement workingset detection for anonymous LRU	2020-08-12 10:57:56 -07:00
swapfile.c	mm/swapcache: support to handle the shadow entries	2020-08-12 10:57:55 -07:00
truncate.c	…
usercopy.c	mm/usercopy.c: delete duplicated word	2020-08-12 10:57:58 -07:00
userfaultfd.c	mm/vmscan: protect the workingset on anonymous LRU	2020-08-12 10:57:55 -07:00
util.c	mm: remove unnecessary wrapper function do_mmap_pgoff()	2020-08-07 11:33:27 -07:00
vmacache.c	…
vmalloc.c	mm/vmalloc.c: remove BUG() from the find_va_links()	2020-08-07 11:33:28 -07:00
vmpressure.c	…
vmscan.c	mm/vmscan.c: delete or fix duplicated words	2020-08-12 10:57:58 -07:00
vmstat.c	mm/vmstat: add events for THP migration without split	2020-08-12 10:57:57 -07:00
workingset.c	mm/swap: implement workingset detection for anonymous LRU	2020-08-12 10:57:56 -07:00
z3fold.c	…
zbud.c	…
zpool.c	mm/zpool.c: delete duplicated word and fix grammar	2020-08-12 10:57:58 -07:00
zsmalloc.c	mm/zsmalloc.c: fix duplicated words	2020-08-12 10:57:58 -07:00
zswap.c	…