Rik van Riel 7e9cd48420 vmscan: fix pagecache reclaim referenced bit check ... Moving referenced pages back to the head of the active list creates a huge scalability problem, because by the time a large memory system finally runs out of free memory, every single page in the system will have been referenced. Not only do we not have the time to scan every single page on the active list, but since they have will all have the referenced bit set, that bit conveys no useful information. A more scalable solution is to just move every page that hits the end of the active list to the inactive list. We clear the referenced bit off of mapped pages, which need just one reference to be moved back onto the active list. Unmapped pages will be moved back to the active list after two references (see mark_page_accessed). We preserve the PG_referenced flag on unmapped pages to preserve accesses that were made while the page was on the active list. Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-10-20 08:50:25 -07:00
..
allocpercpu.c	mm/allocpercpu.c: make 4 functions static	2008-07-26 12:00:12 -07:00
backing-dev.c	mm: bdi: fix race in bdi_class device creation	2008-05-20 13:31:53 -07:00
bootmem.c	misc: replace __FUNCTION__ with __func__	2008-10-16 11:21:30 -07:00
bounce.c	highmem: use bio_has_data() in the bounce path	2008-10-09 08:56:01 +02:00
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
filemap_xip.c	mm: xip/ext2 fix block allocation race	2008-08-20 15:40:32 -07:00
filemap.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
fremap.c	mmu-notifiers: core	2008-07-28 16:30:21 -07:00
highmem.c	x86, pat: avoid highmem cache attribute aliasing	2008-08-15 17:22:57 +02:00
hugetlb.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
internal.h	vmscan: move isolate_lru_page() to vmscan.c	2008-10-20 08:50:25 -07:00
Kconfig	Merge branch 'core-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-10-16 15:17:40 -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	mmu-notifiers: core	2008-07-28 16:30:21 -07:00
memcontrol.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
memory_hotplug.c	vmscan: move isolate_lru_page() to vmscan.c	2008-10-20 08:50:25 -07:00
memory.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
mempolicy.c	vmscan: move isolate_lru_page() to vmscan.c	2008-10-20 08:50:25 -07:00
mempool.c	spelling fixes: mm/	2007-10-20 01:27:18 +02:00
migrate.c	define page_file_cache() function	2008-10-20 08:50:25 -07:00
mincore.c	mm: remove nopage	2008-04-28 08:58:18 -07:00
mlock.c	mlock() fix return values	2008-08-04 16:58:45 -07:00
mm_init.c	mm: mminit_loglevel cannot be __meminitdata anymore	2008-08-20 15:40:30 -07:00
mmap.c	mmap: fix petty bug in anonymous shared mmap offset handling	2008-09-03 19:58:53 -07:00
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	mmu-notifiers: core	2008-07-28 16:30:21 -07:00
mremap.c	mmu-notifiers: core	2008-07-28 16:30:21 -07:00
msync.c	Detach sched.h from mm.h	2007-05-21 09:18:19 -07:00
nommu.c	nommu: Provide vmalloc_exec().	2008-08-04 16:01:47 +09:00
oom_kill.c	security: Fix setting of PF_SUPERPRIV by __capable()	2008-08-14 22:59:43 +10:00
page_alloc.c	vmscan: second chance replacement for anonymous pages	2008-10-20 08:50:25 -07:00
page_io.c	mm: fix PageUptodate data race	2008-02-05 09:44:19 -08:00
page_isolation.c	memory hotplug: missing zone->lock in test_pages_isolated()	2008-10-02 15:53:13 -07:00
page-writeback.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
pagewalk.c	pagemap: pass mm into pagewalkers	2008-06-12 18:05:41 -07:00
pdflush.c	Remove Andrew Morton's old email accounts	2008-10-16 11:21:32 -07:00
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	anon_vma_prepare: properly lock even newly allocated entries	2008-10-19 11:50:35 -07:00
shmem_acl.c	[PATCH] sanitize ->permission() prototype	2008-07-26 20:53:14 -04:00
shmem.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
slab.c	mm: unexport ksize	2008-07-29 23:44:26 +03:00
slob.c	SLOB: fix bogus ksize calculation fix	2008-10-09 12:18:27 -07:00
slub.c	slub: fixed uninitialized counter in struct kmem_cache_node	2008-09-15 09:49:05 +03:00
sparse-vmemmap.c	Christoph has moved	2008-07-04 10:40:04 -07:00
sparse.c	mm/sparse.c: removed duplicated include	2008-08-12 16:07:30 -07:00
swap_state.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
swap.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
swapfile.c	vmscan: free swap space on swap-in/activation	2008-10-20 08:50:25 -07:00
thrash.c	Bug in mm/thrash.c function grab_swap_token()	2007-05-11 08:29:32 -07:00
tiny-shmem.c	mm: tiny-shmem nommu fix	2008-10-02 15:53:13 -07:00
truncate.c	Remove Andrew Morton's old email accounts	2008-10-16 11:21:32 -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	Merge branches 'x86/xen', 'x86/build', 'x86/microcode', 'x86/mm-debug-v2', 'x86/memory-corruption-check', 'x86/early-printk', 'x86/xsave', 'x86/ptrace-v2', 'x86/quirks', 'x86/setup', 'x86/spinlocks' and 'x86/signal' into x86/core-v2	2008-10-12 15:50:02 +02:00
vmscan.c	vmscan: fix pagecache reclaim referenced bit check	2008-10-20 08:50:25 -07:00
vmstat.c	vmscan: second chance replacement for anonymous pages	2008-10-20 08:50:25 -07:00