Rik van Riel dabe1d9924 sched/numa: Be more careful about joining numa groups ...

Due to the way the pid is truncated, and tasks are moved between
CPUs by the scheduler, it is possible for the current task_numa_fault
to group together tasks that do not actually share memory together.

This patch adds a few easy sanity checks to task_numa_fault, joining
tasks together if they share the same tsk->mm, or if the fault was on
a page with an elevated mapcount, in a shared VMA.

Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1381141781-10992-57-git-send-email-mgorman@suse.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2013-10-09 14:48:12 +02:00

..

backing-dev.c

mm/backing-dev.c: check user buffer length before copying data to the related user buffer

2013-09-11 15:58:03 -07:00

balloon_compaction.c

mm: introduce a common interface for balloon pages mobility

2012-12-11 17:22:26 -08:00

bootmem.c

mm: kill free_all_bootmem_node()

2013-07-03 16:07:39 -07:00

bounce.c

mm/bounce.c: fix a regression where MS_SNAP_STABLE (stable pages snapshotting) was ignored

2013-09-30 14:31:02 -07:00

cleancache.c

mm: cleancache: clean up cleancache_enabled

2013-04-30 17:04:01 -07:00

compaction.c

mm/compaction.c: periodically schedule when freeing pages

2013-09-30 14:31:01 -07:00

debug-pagealloc.c

…

dmapool.c

dmapool: make DMAPOOL_DEBUG detect corruption of free marker

2012-12-11 17:22:24 -08:00

fadvise.c

teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long

2013-03-03 22:46:22 -05:00

failslab.c

…

filemap_xip.c

lift sb_start_write() out of ->write()

2013-04-09 14:12:56 -04:00

filemap.c

mm: cleanup add_to_page_cache_locked()

2013-09-12 15:38:03 -07:00

fremap.c

mm: save soft-dirty bits on file pages

2013-08-13 17:57:48 -07:00

frontswap.c

frontswap: fix incorrect zeroing and allocation size for frontswap_map

2013-06-12 16:29:46 -07:00

highmem.c

Some nice cleanups, and even a patch my wife did as a "live" demo for

2012-12-20 08:37:05 -08:00

huge_memory.c

mm: numa: Do not group on RO pages

2013-10-09 14:47:53 +02:00

hugetlb_cgroup.c

cgroup: pass around cgroup_subsys_state instead of cgroup in file methods

2013-08-08 20:11:24 -04:00

hugetlb.c

mm: prepare to remove /proc/sys/vm/hugepages_treat_as_movable

2013-09-11 15:57:49 -07:00

hwpoison-inject.c

mm/hwpoison: fix the lack of one reference count against poisoned page

2013-09-30 14:31:03 -07:00

init-mm.c

…

internal.h

mm: vmscan: fix do_try_to_free_pages() livelock

2013-09-11 15:58:01 -07:00

interval_tree.c

…

Kconfig

powerpc: Fix memory hotplug with sparse vmemmap

2013-10-03 17:21:38 +10:00

Kconfig.debug

…

kmemcheck.c

…

kmemleak-test.c

…

kmemleak.c

mm: replace strict_strtoul() with kstrtoul()

2013-09-11 15:57:11 -07:00

ksm.c

mm: replace strict_strtoul() with kstrtoul()

2013-09-11 15:57:11 -07:00

list_lru.c

list_lru: dynamically adjust node arrays

2013-09-10 18:56:32 -04:00

maccess.c

…

madvise.c

mm/hwpoison: fix traversal of hugetlbfs pages to avoid printk flood

2013-09-30 14:31:02 -07:00

Makefile

list: add a new LRU list type

2013-09-10 18:56:30 -04:00

memblock.c

memblock, numa: binary search node id

2013-09-11 15:57:51 -07:00

memcontrol.c

revert "memcg, vmscan: integrate soft reclaim tighter with zone shrinking code"

2013-09-24 17:00:26 -07:00

memory_hotplug.c

ACPI and power management fixes for 3.12-rc1

2013-09-12 11:22:45 -07:00

memory-failure.c

mm/hwpoison: fix false report on 2nd attempt at page recovery

2013-09-30 14:31:02 -07:00

memory.c

sched/numa: Be more careful about joining numa groups

2013-10-09 14:48:12 +02:00

mempolicy.c

mm: numa: Change page last {nid,pid} into {cpu,pid}

2013-10-09 14:47:45 +02:00

mempool.c

mm/mempool.c: convert kmalloc_node(...GFP_ZERO...) to kzalloc_node(...)

2013-09-11 15:58:14 -07:00

migrate.c

mm: numa: Copy cpupid on page migration

2013-10-09 14:47:51 +02:00

mincore.c

swap: make each swap partition have one address_space

2013-02-23 17:50:17 -08:00

mlock.c

mm/mlock.c: prevent walking off the end of a pagetable in no-pmd configuration

2013-09-30 14:31:02 -07:00

mm_init.c

mm: numa: Change page last {nid,pid} into {cpu,pid}

2013-10-09 14:47:45 +02:00

mmap.c

mm/mmap: remove unnecessary assignment

2013-09-11 15:58:13 -07:00

mmu_context.c

mm: remove old aio use_mm() comment

2013-05-07 18:38:27 -07:00

mmu_notifier.c

treewide: relase -> release

2013-06-28 14:34:33 +02:00

mmzone.c

mm: numa: Change page last {nid,pid} into {cpu,pid}

2013-10-09 14:47:45 +02:00

mprotect.c

mm: numa: Do not batch handle PMD pages

2013-10-09 14:47:55 +02:00

mremap.c

mm/mremap.c: call pud_free() after fail calling pmd_alloc()

2013-09-11 15:58:03 -07:00

msync.c

…

nobootmem.c

mm: concentrate modification of totalram_pages into the mm core

2013-07-03 16:07:33 -07:00

nommu.c

mm: remove free_area_cache

2013-07-10 18:11:34 -07:00

oom_kill.c

mm: memcg: do not trap chargers with full callstack on OOM

2013-09-12 15:38:02 -07:00

page_alloc.c

mm: numa: Change page last {nid,pid} into {cpu,pid}

2013-10-09 14:47:45 +02:00

page_cgroup.c

memcontrol: use N_MEMORY instead N_HIGH_MEMORY

2012-12-12 17:38:32 -08:00

page_io.c

aio: Kill aio_rw_vect_retry()

2013-07-30 11:53:12 -04:00

page_isolation.c

mm: memory-hotplug: enable memory hotplug to handle hugepage

2013-09-11 15:57:48 -07:00

page-writeback.c

memcg: add per cgroup writeback pages accounting

2013-09-12 15:38:02 -07:00

pagewalk.c

mm/pagewalk.c: walk_page_range should avoid VM_PFNMAP areas

2013-05-24 16:22:53 -07:00

percpu-km.c

…

percpu-vm.c

…

percpu.c

mm, percpu: Make sure percpu_alloc early parameter has an argument

2012-12-02 06:23:04 -08:00

pgtable-generic.c

mm: move pgtable related functions to right place

2013-09-11 15:57:30 -07:00

process_vm_access.c

Fix: compat_rw_copy_check_uvector() misuse in aio, readv, writev, and security keys

2013-03-12 11:05:45 -07:00

quicklist.c

…

readahead.c

readahead: make context readahead more conservative

2013-09-11 15:57:39 -07:00

rmap.c

thp: account anon transparent huge pages into NR_ANON_PAGES

2013-09-12 15:38:03 -07:00

shmem.c

initmpfs: make rootfs use tmpfs when CONFIG_TMPFS enabled

2013-09-11 15:59:37 -07:00

slab_common.c

mm/sl[aou]b: Move kmallocXXX functions to common code

2013-09-04 20:51:33 +03:00

slab.c

kernel: delete __cpuinit usage from all core kernel files

2013-07-14 19:36:59 -04:00

slab.h

memcg: check that kmem_cache has memcg_params before accessing it

2013-08-28 19:26:38 -07:00

slob.c

mm/sl[aou]b: Move kmallocXXX functions to common code

2013-09-04 20:51:33 +03:00

slub.c

Merge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux

2013-09-15 07:15:06 -04:00

sparse-vmemmap.c

sparse-vmemmap: specify vmemmap population range in bytes

2013-04-29 15:54:35 -07:00

sparse.c

mm/sparse: introduce alloc_usemap_and_memmap

2013-09-11 15:58:01 -07:00

swap_state.c

lib/radix-tree.c: make radix_tree_node_alloc() work correctly within interrupt

2013-09-11 15:59:36 -07:00

swap.c

mm: make lru_add_drain_all() selective

2013-09-12 15:38:02 -07:00

swapfile.c

swap: make cluster allocation per-cpu

2013-09-11 15:57:17 -07:00

truncate.c

truncate: drop 'oldsize' truncate_pagecache() parameter

2013-09-12 15:38:02 -07:00

util.c

swap: clean-up #ifdef in page_mapping()

2013-09-11 15:57:31 -07:00

vmalloc.c

mm/vmalloc: use wrapper function get_vm_area_size to caculate size of vm area

2013-09-11 15:58:02 -07:00

vmpressure.c

Merge branch 'for-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

2013-09-03 18:25:03 -07:00

vmscan.c

mm: avoid reinserting isolated balloon pages into LRU lists

2013-09-30 14:31:02 -07:00

vmstat.c

mm: vmscan: fix do_try_to_free_pages() livelock

2013-09-11 15:58:01 -07:00

zbud.c

mm/zbud: fix some trivial typos in comments

2013-09-11 15:57:35 -07:00

zswap.c

mm/zswap: use postorder iteration when destroying rbtree

2013-09-11 15:59:21 -07:00