Johannes Weiner 73f038b863 mm: page_alloc: exclude unreclaimable allocations from zone fairness policy ... Dave Hansen noted a regression in a microbenchmark that loops around open() and close() on an 8-node NUMA machine and bisected it down to commit 81c0a2bb51 ("mm: page_alloc: fair zone allocator policy"). That change forces the slab allocations of the file descriptor to spread out to all 8 nodes, causing remote references in the page allocator and slab. The round-robin policy is only there to provide fairness among memory allocations that are reclaimed involuntarily based on pressure in each zone. It does not make sense to apply it to unreclaimable kernel allocations that are freed manually, in this case instantly after the allocation, and incur the remote reference costs twice for no reason. Only round-robin allocations that are usually freed through page reclaim or slab shrinking. Bisected by Dave Hansen. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Mel Gorman <mgorman@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2013-12-18 19:04:51 -08:00
..
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/bootmem.c: remove unused local `map'	2013-11-13 12:09:09 +09:00
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: update comment about zone lock in isolate_freepages_block	2013-11-13 12:09:03 +09:00
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	seqcount: Add lockdep functionality to seqcount/seqlock structures	2013-11-06 12:40:26 +01:00
filemap.c	mm: drop actor argument of do_generic_file_read()	2013-11-15 09:32:13 +09:00
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: defer TLB flush for THP migration as long as possible	2013-12-18 19:04:51 -08:00
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: hugetlbfs: fix hugetlbfs optimization	2013-11-21 16:42:27 -08:00
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	mm: add CONFIG_DEBUG_VM_RB build option	2012-10-09 16:22:42 +09:00
Kconfig	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2013-11-15 16:47:22 -08:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c	mm: kmemleak: avoid false negatives on vmalloc'ed objects	2013-11-13 12:09:07 +09:00
ksm.c	ksm: remove redundant __GFP_ZERO from kcalloc	2013-11-13 12:09:02 +09:00
list_lru.c	mm: list_lru: fix almost infinite loop causing effective livelock	2013-10-30 12:57:46 -07:00
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	mm/memblock.c: introduce bottom-up allocation mode	2013-11-13 12:09:08 +09:00
memcontrol.c	mm: memcg: do not allow task about to OOM kill to bypass the limit	2013-12-12 18:19:26 -08:00
memory_hotplug.c	mem-hotplug: introduce movable_node boot option	2013-11-13 12:09:09 +09:00
memory-failure.c	kfifo API type safety	2013-11-15 09:32:23 +09:00
memory.c	Revert "mm: create a separate slab for page->ptl allocation"	2013-11-20 14:41:47 -08:00
mempolicy.c	mm, mempolicy: silence gcc warning	2013-11-21 16:42:27 -08:00
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: defer TLB flush for THP migration as long as possible	2013-12-18 19:04:51 -08:00
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: convert mm->nr_ptes to atomic_long_t	2013-11-15 09:32:14 +09:00
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: fix TLB flush race between migration, and change_protection_range	2013-12-18 19:04:51 -08:00
mremap.c	mm: revert mremap pud_free anti-fix	2013-10-16 21:35:53 -07:00
msync.c
nobootmem.c	mm/nobootmem.c: have __free_pages_memory() free in larger chunks.	2013-11-13 12:09:04 +09:00
nommu.c	Merge branch 'akpm' (patches from Andrew Morton)	2013-11-13 15:45:43 +09:00
oom_kill.c	mm: convert mm->nr_ptes to atomic_long_t	2013-11-15 09:32:14 +09:00
page_alloc.c	mm: page_alloc: exclude unreclaimable allocations from zone fairness policy	2013-12-18 19:04:51 -08:00
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	writeback: fix negative bdi max pause	2013-10-16 21:35:53 -07:00
pagewalk.c	mm/pagewalk.c: fix walk_page_range() access of wrong PTEs	2013-10-30 14:27:03 -07:00
percpu-km.c
percpu-vm.c
percpu.c	percpu: fix bootmem error handling in pcpu_page_first_chunk()	2013-09-23 10:51:45 -04:00
pgtable-generic.c	mm: fix TLB flush race between migration, and change_protection_range	2013-12-18 19:04:51 -08:00
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: fix sequential read cache miss detection	2013-11-13 12:09:09 +09:00
rmap.c	mm, hugetlb: convert hugetlbfs to use split pmd lock	2013-11-15 09:32:14 +09:00
shmem.c	security: shmem: implement kernel private shmem inodes	2013-12-02 11:24:19 +00:00
slab_common.c	memcg, kmem: rename cache_from_memcg to cache_from_memcg_idx	2013-11-13 12:09:10 +09:00
slab.c	Merge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2013-11-22 08:10:34 -08:00
slab.h	memcg, kmem: rename cache_from_memcg to cache_from_memcg_idx	2013-11-13 12:09:10 +09:00
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	2013-11-22 08:10:34 -08:00
sparse-vmemmap.c	sparse-vmemmap: specify vmemmap population range in bytes	2013-04-29 15:54:35 -07:00
sparse.c	mm/sparsemem: fix a bug in free_map_bootmem when CONFIG_SPARSEMEM_VMEMMAP	2013-11-13 12:09:06 +09:00
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: hugetlbfs: fix hugetlbfs optimization	2013-11-21 16:42:27 -08:00
swapfile.c	frontswap: enable call to invalidate area on swapoff	2013-11-13 12:09:07 +09:00
truncate.c	truncate: drop 'oldsize' truncate_pagecache() parameter	2013-09-12 15:38:02 -07:00
util.c	mm: factor commit limit calculation	2013-11-13 12:09:11 +09:00
vmalloc.c	mm: kmemleak: avoid false negatives on vmalloc'ed objects	2013-11-13 12:09:07 +09:00
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/vmscan.c: don't forget to free shrinker->nr_deferred	2013-10-16 21:35:52 -07:00
vmstat.c	mm: numa: return the number of base pages altered by protection changes	2013-11-13 12:09:11 +09:00
zbud.c	mm/zbud: fix some trivial typos in comments	2013-09-11 15:57:35 -07:00
zswap.c	mm/zswap: refactor the get/put routines	2013-11-13 12:09:11 +09:00