Greg Thelen 484ebb3b8c memcg: make mem_cgroup_read_stat() unsigned ...

mem_cgroup_read_stat() returns a page count by summing per cpu page
counters.  The summing is racy wrt.  updates, so a transient negative
sum is possible.  Callers don't want negative values:

 - mem_cgroup_wb_stats() doesn't want negative nr_dirty or nr_writeback.
   This could confuse dirty throttling.

 - oom reports and memory.stat shouldn't show confusing negative usage.

 - tree_usage() already avoids negatives.

Avoid returning negative page counts from mem_cgroup_read_stat() and
convert it to unsigned.

[akpm@linux-foundation.org: fix old typo while we're in there]
Signed-off-by: Greg Thelen <gthelen@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: <stable@vger.kernel.org>	[4.2+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2015-10-01 21:42:35 -04:00

..

kasan

kasan: fix last shadow judgement in memory_is_poisoned_16()

2015-09-17 21:16:07 -07:00

backing-dev.c

Merge branch 'for-4.3/blkcg' of git://git.kernel.dk/linux-block

2015-09-10 18:56:14 -07:00

balloon_compaction.c

mm/balloon_compaction: fix deflation when compaction is disabled

2014-10-29 16:33:15 -07:00

bootmem.c

bootmem: avoid freeing to bootmem after bootmem is done

2015-09-08 15:35:28 -07:00

cleancache.c

cleancache: remove limit on the number of cleancache enabled filesystems

2015-04-14 16:49:03 -07:00

cma_debug.c

mm/cma_debug: correct size input to bitmap function

2015-07-17 16:39:54 -07:00

cma.c

mm/memblock: add extra "flags" to memblock to allow selection of memory based on attribute

2015-06-24 17:49:44 -07:00

cma.h

mm: cma: mark cma_bitmap_maxno() inline in header

2015-08-14 15:56:32 -07:00

compaction.c

mm/compaction: correct to flush migrated pages if pageblock skip happens

2015-09-08 15:35:28 -07:00

debug-pagealloc.c

mm/debug-pagealloc: make debug-pagealloc boottime configurable

2014-12-13 12:42:48 -08:00

debug.c

mm: introduce idle page tracking

2015-09-10 13:29:01 -07:00

dmapool.c

mm: add support for __GFP_ZERO flag to dma_pool_alloc()

2015-09-08 15:35:28 -07:00

early_ioremap.c

mm/early_ioremap: add explicit #include of asm/early_ioremap.h

2015-09-11 15:21:34 -07:00

fadvise.c

writeback: implement and use inode_congested()

2015-06-02 08:33:35 -06:00

failslab.c

…

filemap.c

mm: rename alloc_pages_exact_node() to __alloc_pages_node()

2015-09-08 15:35:28 -07:00

frame_vector.c

[media] mm: Provide new get_vaddr_frames() helper

2015-08-16 13:02:47 -03:00

frontswap.c

frontswap: allow multiple backends

2015-06-24 17:49:45 -07:00

gup.c

mm: make GUP handle pfn mapping unless FOLL_GET is requested

2015-09-04 16:54:41 -07:00

highmem.c

mm/highmem: make kmap cache coloring aware

2014-08-06 18:01:22 -07:00

huge_memory.c

mm: introduce idle page tracking

2015-09-10 13:29:01 -07:00

hugetlb_cgroup.c

mm: page_counter: pull "-1" handling out of page_counter_memparse()

2015-02-11 17:06:02 -08:00

hugetlb.c

mm: hugetlbfs: skip shared VMAs when unmapping private pages to satisfy a fault

2015-10-01 21:42:35 -04:00

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

mm/compaction: correct to flush migrated pages if pageblock skip happens

2015-09-08 15:35:28 -07:00

interval_tree.c

mm: replace vma->sharead.linear with vma->shared

2015-02-10 14:30:31 -08:00

Kconfig

media updates for v4.3-rc1

2015-09-11 16:42:39 -07:00

Kconfig.debug

mm/debug_pagealloc: remove obsolete Kconfig options

2015-01-08 15:10:52 -08:00

kmemcheck.c

mm/slab_common: move kmem_cache definition to internal header

2014-10-09 22:25:50 -04:00

kmemleak-test.c

mm/kmemleak-test.c: use pr_fmt for logging

2014-06-06 16:08:18 -07:00

kmemleak.c

kmemleak: use seq_hex_dump() to dump buffers

2015-09-10 13:29:01 -07:00

ksm.c

mm: remove rest of ACCESS_ONCE() usages

2015-04-15 16:35:18 -07:00

list_lru.c

list_lru: don't call list_lru_from_kmem if the list_head is empty

2015-09-08 15:35:28 -07:00

maccess.c

lib: move strncpy_from_unsafe() into mm/maccess.c

2015-08-31 12:36:10 -07:00

madvise.c

mm: madvise allow remove operation for hugetlbfs

2015-09-08 15:35:28 -07:00

Makefile

media updates for v4.3-rc1

2015-09-11 16:42:39 -07:00

memblock.c

mm/memblock.c: fix comment in __next_mem_range()

2015-09-08 15:35:28 -07:00

memcontrol.c

memcg: make mem_cgroup_read_stat() unsigned

2015-10-01 21:42:35 -04:00

memory_hotplug.c

libnvdimm for 4.3:

2015-09-08 14:35:59 -07:00

memory-failure.c

hwpoison: use page_cgroup_ino for filtering by memcg

2015-09-10 13:29:01 -07:00

memory.c

mm: use vma_is_anonymous() in create_huge_pmd() and wp_huge_pmd()

2015-09-10 13:29:01 -07:00

mempolicy.c

mm: rename alloc_pages_exact_node() to __alloc_pages_node()

2015-09-08 15:35:28 -07:00

mempool.c

mm/mempool: allow NULL `pool' pointer in mempool_destroy()

2015-09-08 15:35:28 -07:00

memtest.c

memtest: remove unused header files

2015-09-08 15:35:28 -07:00

migrate.c

memcg: fix dirty page migration

2015-10-01 21:42:35 -04:00

mincore.c

mincore: apply page table walker on do_mincore()

2015-02-11 17:06:06 -08:00

mlock.c

userfaultfd: teach vma_merge to merge across vma->vm_userfaultfd_ctx

2015-09-04 16:54:41 -07:00

mm_init.c

mm: meminit: remove mminit_verify_page_links

2015-06-30 19:44:56 -07:00

mmap.c

mm, dax: VMA with vm_ops->pfn_mkwrite wants to be write-notified

2015-09-22 15:09:53 -07:00

mmu_context.c

…

mmu_notifier.c

mmu-notifier: add clear_young callback

2015-09-10 13:29:01 -07:00

mmzone.c

mm: microoptimize zonelist operations

2015-02-11 17:06:02 -08:00

mprotect.c

userfaultfd: teach vma_merge to merge across vma->vm_userfaultfd_ctx

2015-09-04 16:54:41 -07:00

mremap.c

mremap: simplify the "overlap" check in mremap_to()

2015-09-04 16:54:41 -07:00

msync.c

mm: remove rest usage of VM_NONLINEAR and pte_file()

2015-02-10 14:30:31 -08:00

nobootmem.c

mm: page_alloc: pass PFN to __free_pages_bootmem

2015-06-30 19:44:55 -07:00

nommu.c

mm, mpx: add "vm_flags_t vm_flags" arg to do_mmap_pgoff()

2015-09-10 13:29:01 -07:00

oom_kill.c

mm, oom: remove unnecessary variable

2015-09-08 15:35:28 -07:00

page_alloc.c

Merge branch 'akpm' (patches from Andrew)

2015-09-08 17:52:23 -07:00

page_counter.c

mm: page_counter: pull "-1" handling out of page_counter_memparse()

2015-02-11 17:06:02 -08:00

page_ext.c

mm: introduce idle page tracking

2015-09-10 13:29:01 -07:00

page_idle.c

mm: introduce idle page tracking

2015-09-10 13:29:01 -07:00

page_io.c

fs: use helper bio_add_page() instead of open coding on bi_io_vec

2015-08-13 12:32:00 -06:00

page_isolation.c

mm, page_isolation: make set/unset_migratetype_isolate() file-local

2015-09-08 15:35:28 -07:00

page_owner.c

mm/page_owner: set correct gfp_mask on page_owner

2015-07-17 16:39:54 -07:00

page-writeback.c

Merge branch 'for-4.3/blkcg' of git://git.kernel.dk/linux-block

2015-09-10 18:56:14 -07:00

pagewalk.c

mm/pagewalk.c: prevent positive return value of walk_page_test() from being passed to callers

2015-03-25 16:20:30 -07:00

percpu-km.c

percpu: implmeent pcpu_nr_empty_pop_pages and chunk->nr_populated

2014-09-02 14:46:05 -04:00

percpu-vm.c

percpu: move region iterations out of pcpu_[de]populate_chunk()

2014-09-02 14:46:02 -04:00

percpu.c

percpu: clean up of schunk->map[] assignment in pcpu_setup_first_chunk

2015-07-21 11:31:00 -04:00

pgtable-generic.c

mm: clarify that the function operates on hugepage pte

2015-06-24 17:49:44 -07:00

process_vm_access.c

process_vm_access: switch to {compat_,}import_iovec()

2015-04-11 22:27:12 -04:00

quicklist.c

…

readahead.c

writeback: implement and use inode_congested()

2015-06-02 08:33:35 -06:00

rmap.c

mm: introduce idle page tracking

2015-09-10 13:29:01 -07:00

shmem.c

shmem: recalculate file inode when fstat

2015-09-08 15:35:28 -07:00

slab_common.c

memcg: export struct mem_cgroup

2015-09-08 15:35:28 -07:00

slab.c

mm/slab: fix unexpected index mapping result of kmalloc_size(INDEX_NODE+1)

2015-10-01 21:42:35 -04:00

slab.h

mm/slab.h: fix argument order in cache_from_obj's error message

2015-09-04 16:54:41 -07:00

slob.c

mm: rename alloc_pages_exact_node() to __alloc_pages_node()

2015-09-08 15:35:28 -07:00

slub.c

mm: rename alloc_pages_exact_node() to __alloc_pages_node()

2015-09-08 15:35:28 -07:00

sparse-vmemmap.c

…

sparse.c

…

swap_cgroup.c

mm: page_cgroup: rename file to mm/swap_cgroup.c

2014-12-10 17:41:09 -08:00

swap_state.c

mm: swap: zswap: maybe_preload & refactoring

2015-09-08 15:35:28 -07:00

swap.c

mm: introduce idle page tracking

2015-09-10 13:29:01 -07:00

swapfile.c

mm: /proc/pid/smaps:: show proportional swap share of the mapping

2015-09-08 15:35:28 -07:00

truncate.c

memcg: add per cgroup dirty page accounting

2015-06-02 08:33:33 -06:00

userfaultfd.c

userfaultfd: avoid mmap_sem read recursion in mcopy_atomic

2015-09-04 16:54:41 -07:00

util.c

mm: uninline and cleanup page-mapping related helpers

2015-04-15 16:35:19 -07:00

vmacache.c

mm,vmacache: count number of system-wide flushes

2014-12-13 12:42:48 -08:00

vmalloc.c

mm/vmalloc: get rid of dirty bitmap inside vmap_block structure

2015-04-15 16:35:18 -07:00

vmpressure.c

mm/vmpressure.c: fix race in vmpressure_work_fn()

2014-12-02 17:32:07 -08:00

vmscan.c

vmscan: fix sane_reclaim helper for legacy memcg

2015-09-22 15:09:53 -07:00

vmstat.c

vmstat: Reduce time interval to stat update on idle cpu

2015-02-11 17:06:07 -08:00

workingset.c

list_lru: add helpers to isolate items

2015-02-12 18:54:10 -08:00

zbud.c

mm: zbud: constify the zbud_ops

2015-09-08 15:35:28 -07:00

zpool.c

zpool: add zpool_has_pool()

2015-09-10 13:29:01 -07:00

zsmalloc.c

mm: zpool: constify the zpool_ops

2015-09-08 15:35:28 -07:00

zswap.c

zswap: change zpool/compressor at runtime

2015-09-10 13:29:01 -07:00