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f3dbd34460
linux/mm
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Christoph Lameter f3dbd34460 [PATCH] zoned vm counters: split NR_ANON_PAGES off from NR_FILE_MAPPED 
The current NR_FILE_MAPPED is used by zone reclaim and the dirty load
calculation as the number of mapped pagecache pages.  However, that is not
true.  NR_FILE_MAPPED includes the mapped anonymous pages.  This patch
separates those and therefore allows an accurate tracking of the anonymous
pages per zone.

It then becomes possible to determine the number of unmapped pages per zone
and we can avoid scanning for unmapped pages if there are none.

Also it may now be possible to determine the mapped/unmapped ratio in
get_dirty_limit.  Isnt the number of anonymous pages irrelevant in that
calculation?

Note that this will change the meaning of the number of mapped pages reported
in /proc/vmstat /proc/meminfo and in the per node statistics.  This may affect
user space tools that monitor these counters!  NR_FILE_MAPPED works like
NR_FILE_DIRTY.  It is only valid for pagecache pages.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-30 11:25:35 -07:00
..
bootmem.c [PATCH] x86_64: Handle empty PXMs that only contain hotplug memory 2006-04-09 11:53:16 -07:00
fadvise.c [PATCH] sys_sync_file_range() 2006-03-31 12:18:54 -08:00
filemap_xip.c [PATCH] mark address_space_operations const 2006-06-28 14:59:04 -07:00
filemap.c [PATCH] zoned vm counters: conversion of nr_pagecache to per zone counter 2006-06-30 11:25:34 -07:00
filemap.h [PATCH] generic_file_buffered_write(): handle zero-length iovec segments 2006-06-29 10:26:20 -07:00
fremap.c [PATCH] fix update_mmu_cache in fremap.c 2006-06-23 07:42:52 -07:00
highmem.c BUG_ON() Conversion in mm/highmem.c 2006-04-02 13:47:35 +02:00
hugetlb.c [PATCH] tightening hugetlb strict accounting 2006-06-23 07:42:48 -07:00
internal.h [PATCH] remove set_page_count() outside mm/ 2006-03-22 07:54:02 -08:00
Kconfig Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2006-06-29 10:49:17 -07:00
madvise.c [PATCH] Fix MADV_REMOVE protection checking 2006-04-17 18:22:18 -07:00
Makefile [PATCH] zoned vm counters: create vmstat.c/.h from page_alloc.c/.h 2006-06-30 11:25:34 -07:00
memory_hotplug.c [PATCH] Register sysfs file for hotplugged new node 2006-06-27 17:32:36 -07:00
memory.c [PATCH] add page_mkwrite() vm_operations method 2006-06-23 07:42:51 -07:00
mempolicy.c [PATCH] proc: don't lock task_structs indefinitely 2006-06-26 09:58:25 -07:00
mempool.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2006-03-26 09:41:18 -08:00
migrate.c [PATCH] Allow migration of mlocked pages 2006-06-25 10:00:55 -07:00
mincore.c [PATCH] freepgt: sys_mincore ignore FIRST_USER_PGD_NR 2005-04-19 13:29:20 -07:00
mlock.c [PATCH] move capable() to capability.h 2006-01-11 18:42:13 -08:00
mmap.c [PATCH] zoned vm counters: conversion of nr_pagecache to per zone counter 2006-06-30 11:25:34 -07:00
mmzone.c [PATCH] uninline zone helpers 2006-03-27 08:44:48 -08:00
mprotect.c [PATCH] add page_mkwrite() vm_operations method 2006-06-23 07:42:51 -07:00
mremap.c [PATCH] move capable() to capability.h 2006-01-11 18:42:13 -08:00
msync.c [PATCH] Kill PF_SYNCWRITE flag 2006-06-23 17:10:39 +02:00
nommu.c [PATCH] zoned vm counters: conversion of nr_pagecache to per zone counter 2006-06-30 11:25:34 -07:00
oom_kill.c [PATCH] mm: fix typos in comments in mm/oom_kill.c 2006-06-23 07:42:47 -07:00
page_alloc.c [PATCH] zoned vm counters: conversion of nr_pagecache to per zone counter 2006-06-30 11:25:34 -07:00
page_io.c [PATCH] mm: split page table lock 2005-10-29 21:40:42 -07:00
page-writeback.c [PATCH] zoned vm counters: split NR_ANON_PAGES off from NR_FILE_MAPPED 2006-06-30 11:25:35 -07:00
pdflush.c [PATCH] pdflush: handle resume wakeups 2006-06-25 10:01:06 -07:00
prio_tree.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
readahead.c spelling fixes 2006-06-26 18:35:02 +02:00
rmap.c [PATCH] zoned vm counters: split NR_ANON_PAGES off from NR_FILE_MAPPED 2006-06-30 11:25:35 -07:00
shmem.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6 2006-06-29 14:19:21 -07:00
slab.c [PATCH] zoned vm counters: basic ZVC (zoned vm counter) implementation 2006-06-30 11:25:34 -07:00
slob.c [PATCH] mm/slob.c: for_each_possible_cpu(), not NR_CPUS 2006-04-19 09:13:49 -07:00
sparse.c [PATCH] spin/rwlock init cleanups 2006-06-27 17:32:39 -07:00
swap_state.c [PATCH] zoned vm counters: conversion of nr_pagecache to per zone counter 2006-06-30 11:25:34 -07:00
swap.c [PATCH] core: use list_move() 2006-06-26 09:58:17 -07:00
swapfile.c [PATCH] read_mapping_page for address space 2006-06-23 07:43:02 -07:00
thrash.c [PATCH] temporarily disable swap token on memory pressure 2005-11-28 14:42:25 -08:00
tiny-shmem.c [PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree 2006-06-26 12:25:08 -07:00
truncate.c [PATCH] Remove semi-softlockup from invalidate_mapping_pages 2006-06-23 07:43:07 -07:00
util.c [PATCH] slab: optimize constant-size kzalloc calls 2006-03-25 08:22:49 -08:00
vmalloc.c [PATCH] mm: introduce remap_vmalloc_range() 2006-06-23 07:42:49 -07:00
vmscan.c [PATCH] zoned vm counters: split NR_ANON_PAGES off from NR_FILE_MAPPED 2006-06-30 11:25:35 -07:00
vmstat.c [PATCH] zoned vm counters: split NR_ANON_PAGES off from NR_FILE_MAPPED 2006-06-30 11:25:35 -07:00