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Johannes Weiner 4917e5d049 mm: more likely reclaim MADV_SEQUENTIAL mappings 
File pages mapped only in sequentially read mappings are perfect reclaim
canditates.

This patch makes these mappings behave like weak references, their pages
will be reclaimed unless they have a strong reference from a normal
mapping as well.

It changes the reclaim and the unmap path where they check if the page has
been referenced.  In both cases, accesses through sequentially read
mappings will be ignored.

Benchmark results from KOSAKI Motohiro:

    http://marc.info/?l=linux-mm&m=122485301925098&w=2

Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
Signed-off-by: Rik van Riel <riel@redhat.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-06 15:59:00 -08:00
..
allocpercpu.c mm/allocpercpu.c: make 4 functions static 2008-07-26 12:00:12 -07:00
backing-dev.c mm/backing-dev.c: remove recently-added WARN_ON() 2008-12-10 08:01:52 -08:00
bootmem.c misc: replace __FUNCTION__ with __func__ 2008-10-16 11:21:30 -07:00
bounce.c bounce: don't rely on a zeroed bio_vec list 2008-12-29 08:29:52 +01:00
dmapool.c dmapool: enable debugging for CONFIG_SLUB_DEBUG_ON too 2008-04-28 08:58:20 -07:00
fadvise.c Remove Andrew Morton's old email accounts 2008-10-16 11:21:32 -07:00
failslab.c SLUB: failslab support 2008-12-29 11:27:46 +02:00
filemap.c mm: write_cache_pages integrity fix 2009-01-06 15:58:59 -08:00
filemap_xip.c mm: xip/ext2 fix block allocation race 2008-08-20 15:40:32 -07:00
fremap.c mmap: handle mlocked pages during map, remap, unmap 2008-10-20 08:52:31 -07:00
highmem.c x86, pat: avoid highmem cache attribute aliasing 2008-08-15 17:22:57 +02:00
hugetlb.c mm: report the MMU pagesize in /proc/pid/smaps 2009-01-06 15:58:58 -08:00
internal.h hugetlb: pull gigantic page initialisation out of the default path 2008-11-06 15:41:18 -08:00
Kconfig Unevictable LRU Infrastructure 2008-10-20 08:50:26 -07:00
maccess.c kgdb: fix optional arch functions and probe_kernel_* 2008-04-17 20:05:39 +02:00
madvise.c madvise: update function comment of madvise_dontneed 2008-07-30 09:41:45 -07:00
Makefile SLUB: failslab support 2008-12-29 11:27:46 +02:00
memcontrol.c memcg: fix page_cgroup allocation 2008-10-23 08:55:02 -07:00
memory.c mm: more likely reclaim MADV_SEQUENTIAL mappings 2009-01-06 15:59:00 -08:00
memory_hotplug.c mm: show node to memory section relationship with symlinks in sysfs 2009-01-06 15:59:00 -08:00
mempolicy.c Merge branch 'master' into next 2008-11-14 11:29:12 +11:00
mempool.c spelling fixes: mm/ 2007-10-20 01:27:18 +02:00
migrate.c mm: move_pages: no need to set pp->page to ZERO_PAGE(0) by default 2009-01-06 15:58:58 -08:00
mincore.c mm: remove nopage 2008-04-28 08:58:18 -07:00
mlock.c x86, bts: memory accounting 2008-12-20 09:15:47 +01:00
mm_init.c mm: mminit_loglevel cannot be __meminitdata anymore 2008-08-20 15:40:30 -07:00
mmap.c mm: update my address 2009-01-05 17:44:42 -08:00
mmu_notifier.c mmu-notifiers: core 2008-07-28 16:30:21 -07:00
mmzone.c mm: mark the correct zone as full when scanning zonelists 2008-09-13 14:41:52 -07:00
mprotect.c mm: cleanup: remove #ifdef CONFIG_MIGRATION 2009-01-06 15:59:00 -08:00
mremap.c mm: update my address 2009-01-05 17:44:42 -08:00
msync.c add a vfs_fsync helper 2009-01-05 11:54:28 -05:00
nommu.c inode->i_op is never NULL 2009-01-05 11:54:28 -05:00
oom_kill.c oom: print triggering task's cpuset and mems allowed 2009-01-06 15:58:59 -08:00
page-writeback.c mm: write_cache_pages more terminate quickly 2009-01-06 15:59:00 -08:00
page_alloc.c mm: print out memmap number only if it is not zero 2009-01-06 15:59:00 -08:00
page_cgroup.c page_cgroup should ignore empty nodes 2008-12-10 08:01:53 -08:00
page_io.c mm: fix PageUptodate data race 2008-02-05 09:44:19 -08:00
page_isolation.c memory hotplug: fix page_zone() calculation in test_pages_isolated() 2008-11-06 15:41:19 -08:00
pagewalk.c pagemap: pass mm into pagewalkers 2008-06-12 18:05:41 -07:00
pdflush.c cpumask: convert mm/ 2009-01-01 10:12:29 +10:30
prio_tree.c spelling fixes: mm/ 2007-10-20 01:27:18 +02:00
quicklist.c mm: size of quicklists shouldn't be proportional to the number of CPUs 2008-09-02 19:21:38 -07:00
readahead.c vmscan: split LRU lists into anon & file sets 2008-10-20 08:50:25 -07:00
rmap.c mm: more likely reclaim MADV_SEQUENTIAL mappings 2009-01-06 15:59:00 -08:00
shmem.c mm: don't mark_page_accessed in shmem_fault 2009-01-06 15:58:58 -08:00
shmem_acl.c [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
slab.c cpumask: convert mm/ 2009-01-01 10:12:29 +10:30
slob.c slob: do not pass the SLAB flags as GFP in kmem_cache_create() 2008-12-15 16:27:06 -08:00
slub.c cpumask: convert mm/ 2009-01-01 10:12:29 +10:30
sparse-vmemmap.c vmemmap: warn about page_structs with remote distance 2008-11-06 15:41:19 -08:00
sparse.c meminit section warnings 2008-11-30 10:03:35 -08:00
swap.c mm: get rid of pagevec_release_nonlru() 2009-01-06 15:59:00 -08:00
swap_state.c mm: pagecache insertion fewer atomics 2008-10-20 08:52:31 -07:00
swapfile.c x86: consolidate __swp_XXX() macros 2008-12-16 18:34:51 +01:00
thrash.c
tiny-shmem.c Export tiny shmem_file_setup for DRM-GEM 2008-10-20 16:17:42 -07:00
truncate.c mmap: handle mlocked pages during map, remap, unmap 2008-10-20 08:52:31 -07:00
util.c mm: Make generic weak get_user_pages_fast and EXPORT_GPL it 2008-08-12 17:52:53 +10:00
vmalloc.c vmalloc.c: fix flushing in vmap_page_range() 2009-01-04 13:33:20 -08:00
vmscan.c cpumask: convert mm/ 2009-01-01 10:12:29 +10:30
vmstat.c cpumask: convert mm/ 2009-01-01 10:12:29 +10:30