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e986850598
linux/mm
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Rik van Riel e986850598 mm,vmscan: only evict file pages when we have plenty 
If we have more inactive file pages than active file pages, we skip
scanning the active file pages altogether, with the idea that we do not
want to evict the working set when there is plenty of streaming IO in the
cache.

However, the code forgot to also skip scanning anonymous pages in that
situation.  That leads to the curious situation of keeping the active file
pages protected from being paged out when there are lots of inactive file
pages, while still scanning and evicting anonymous pages.

This patch fixes that situation, by only evicting file pages when we have
plenty of them and most are inactive.

[akpm@linux-foundation.org: adjust comment layout]
Signed-off-by: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-11 17:22:23 -08:00
..
backing-dev.c
bootmem.c revert "mm: fix-up zone present pages" 2012-11-16 14:33:04 -08:00
bounce.c
cleancache.c
compaction.c mm: compaction: validate pfn range passed to isolate_freepages_block 2012-12-06 11:17:33 -08:00
debug-pagealloc.c
dmapool.c mm: dmapool: use provided gfp flags for all dma_alloc_coherent() calls 2012-12-11 09:28:08 +01:00
fadvise.c
failslab.c
filemap_xip.c mm: move all mmu notifier invocations to be done outside the PT lock 2012-10-09 16:22:58 +09:00
filemap.c readahead: fault retry breaks mmap file read random detection 2012-10-09 16:22:47 +09:00
fremap.c remap_file_pages: correctly handle the case of a NULL vm_ops pointer 2012-10-19 13:37:57 -07:00
frontswap.c
highmem.c mm: highmem: don't treat PKMAP_ADDR(LAST_PKMAP) as a highmem address 2012-11-16 14:33:04 -08:00
huge_memory.c thp: cleanup: introduce mk_huge_pmd() 2012-12-11 17:22:22 -08:00
hugetlb_cgroup.c
hugetlb.c numa: convert static memory to dynamically allocated memory for per node device 2012-12-11 17:22:23 -08:00
hwpoison-inject.c
init-mm.c
internal.h mm: introduce mm_find_pmd() 2012-12-11 17:22:22 -08:00
interval_tree.c mm: add CONFIG_DEBUG_VM_RB build option 2012-10-09 16:22:42 +09:00
Kconfig mm: enable CONFIG_COMPACTION by default 2012-10-09 16:22:53 +09:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c kmemleak: use rbtree instead of prio tree 2012-10-09 16:22:39 +09:00
ksm.c mm: introduce mm_find_pmd() 2012-12-11 17:22:22 -08:00
maccess.c
madvise.c mm: prepare VM_DONTDUMP for using in drivers 2012-10-09 16:22:18 +09:00
Makefile mm: replace vma prio_tree with an interval tree 2012-10-09 16:22:39 +09:00
memblock.c x86, mm: Trim memory in memblock to be page aligned 2012-10-24 11:52:21 -07:00
memcontrol.c mm, memcg: make mem_cgroup_out_of_memory() static 2012-12-11 17:22:22 -08:00
memory_hotplug.c mm/memory_hotplug.c: update start_pfn in zone and pg_data when spanned_pages == 0. 2012-12-11 17:22:23 -08:00
memory-failure.c memory-hotplug: skip HWPoisoned page when offlining pages 2012-12-11 17:22:22 -08:00
memory.c mm: fix build warning for uninitialized value 2012-11-16 14:33:03 -08:00
mempolicy.c tmpfs: fix shared mempolicy leak 2012-12-06 11:56:43 -08:00
mempool.c
migrate.c mm: introduce mm_find_pmd() 2012-12-11 17:22:22 -08:00
mincore.c
mlock.c mm, thp: fix mlock statistics 2012-10-09 16:23:03 +09:00
mm_init.c
mmap.c mm: add anon_vma_lock to validate_mm() 2012-11-16 14:33:03 -08:00
mmu_context.c
mmu_notifier.c mm/mmu_notifier: allocate mmu_notifier in advance 2012-10-25 14:37:53 -07:00
mmzone.c memcg: fix hotplugged memory zone oops 2012-11-16 14:33:04 -08:00
mprotect.c
mremap.c mm: move all mmu notifier invocations to be done outside the PT lock 2012-10-09 16:22:58 +09:00
msync.c
nobootmem.c revert "mm: fix-up zone present pages" 2012-11-16 14:33:04 -08:00
nommu.c mm: replace vma prio_tree with an interval tree 2012-10-09 16:22:39 +09:00
oom_kill.c oom: remove deprecated oom_adj 2012-10-09 16:22:24 +09:00
page_alloc.c memory-hotplug: allocate zone's pcp before onlining pages 2012-12-11 17:22:23 -08:00
page_cgroup.c memory-hotplug: auto offline page_cgroup when onlining memory block failed 2012-12-11 17:22:23 -08:00
page_io.c
page_isolation.c memory-hotplug: skip HWPoisoned page when offlining pages 2012-12-11 17:22:22 -08:00
page-writeback.c writeback: remove nr_pages_dirtied arg from balance_dirty_pages_ratelimited_nr() 2012-12-11 17:22:21 -08:00
pagewalk.c
percpu-km.c
percpu-vm.c
percpu.c
pgtable-generic.c thp: introduce pmdp_invalidate() 2012-10-09 16:22:29 +09:00
process_vm_access.c
quicklist.c
readahead.c
rmap.c mm: add comment on storage key dirty bit semantics 2012-12-11 17:22:23 -08:00
shmem.c tmpfs: fix shared mempolicy leak 2012-12-06 11:56:43 -08:00
slab_common.c mm, slab: release slab_mutex earlier in kmem_cache_destroy() 2012-10-10 09:25:08 +03:00
slab.c
slab.h
slob.c Merge branch 'testing/driver-warnings' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into fixes 2012-10-19 15:40:18 -07:00
slub.c slub, hotplug: ignore unrelated node's hot-adding and hot-removing 2012-12-11 17:22:23 -08:00
sparse-vmemmap.c
sparse.c memory-hotplug, mm/sparse.c: clear the memory to store struct page 2012-12-11 17:22:23 -08:00
swap_state.c
swap.c mm: remove vma arg from page_evictable 2012-10-09 16:22:55 +09:00
swapfile.c swapfile: fix name leak in swapoff 2012-11-16 14:33:04 -08:00
truncate.c mm: use clear_page_mlock() in page_remove_rmap() 2012-10-09 16:22:56 +09:00
util.c
vmalloc.c mm: use IS_ENABLED(CONFIG_NUMA) instead of NUMA_BUILD 2012-12-11 17:22:22 -08:00
vmscan.c mm,vmscan: only evict file pages when we have plenty 2012-12-11 17:22:23 -08:00
vmstat.c mm: remove unevictable_pgs_mlockfreed 2012-10-09 16:22:59 +09:00