The patch titled
swap_prefetch: conversion of nr_mapped to per zone counter
has been added to the -mm tree. Its filename is
swap_prefetch-conversion-of-nr_mapped-to-per-zone-counter.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: swap_prefetch: conversion of nr_mapped to per zone counter
From: Christoph Lameter <clameter@xxxxxxx>
Conversion of nr_mapped to a per zone counter
nr_mapped is important because it allows a determination how many pages of a
zone are not mapped, which would allow a more efficient means of determining
when we need to reclaim memory in a zone.
We take the nr_mapped field out of the page state structure and define a new
per zone counter named NR_MAPPED.
We replace the use of nr_mapped in various kernel locations. This avoids the
looping over all processors in try_to_free_pages(), writeback, reclaim (swap +
zone reclaim).
Signed-off-by: Christoph Lameter <clameter@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/swap_prefetch.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/swap_prefetch.c~swap_prefetch-conversion-of-nr_mapped-to-per-zone-counter mm/swap_prefetch.c
--- devel/mm/swap_prefetch.c~swap_prefetch-conversion-of-nr_mapped-to-per-zone-counter 2006-06-09 02:50:18.000000000 -0700
+++ devel-akpm/mm/swap_prefetch.c 2006-06-09 02:50:18.000000000 -0700
@@ -394,7 +394,7 @@ static int prefetch_suitable(void)
* even if the slab is being allocated on a remote node. This
* would be expensive to fix and not of great significance.
*/
- limit = ps.nr_mapped + ps.nr_slab + ps.nr_dirty +
+ limit = global_page_state(NR_MAPPED) + ps.nr_slab + ps.nr_dirty +
ps.nr_unstable + total_swapcache_pages;
if (limit > ns->prefetch_watermark) {
node_clear(node, sp_stat.prefetch_nodes);
_
Patches currently in -mm which might be from clameter@xxxxxxx are
page-migration-make-do_swap_page-redo-the-fault.patch
slab-extract-cache_free_alien-from-__cache_free.patch
migration-remove-unnecessary-pageswapcache-checks.patch
page-migration-cleanup-rename-ignrefs-to-migration.patch
page-migration-cleanup-group-functions.patch
page-migration-cleanup-remove-useless-definitions.patch
page-migration-cleanup-drop-nr_refs-in-remove_references.patch
page-migration-cleanup-extract-try_to_unmap-from-migration-functions.patch
page-migration-cleanup-pass-mapping-to-migration-functions.patch
page-migration-cleanup-move-fallback-handling-into-special-function.patch
swapless-pm-add-r-w-migration-entries.patch
swapless-page-migration-rip-out-swap-based-logic.patch
swapless-page-migration-modify-core-logic.patch
more-page-migration-do-not-inc-dec-rss-counters.patch
more-page-migration-use-migration-entries-for-file-pages.patch
page-migration-update-documentation.patch
mm-remove-vm_locked-before-remap_pfn_range-and-drop-vm_shm.patch
page-migration-simplify-migrate_pages.patch
page-migration-simplify-migrate_pages-tweaks.patch
page-migration-handle-freeing-of-pages-in-migrate_pages.patch
page-migration-use-allocator-function-for-migrate_pages.patch
page-migration-support-moving-of-individual-pages.patch
page-migration-detailed-status-for-moving-of-individual-pages.patch
page-migration-support-moving-of-individual-pages-fixes.patch
page-migration-support-moving-of-individual-pages-x86_64-support.patch
page-migration-support-moving-of-individual-pages-x86-support.patch
page-migration-support-a-vma-migration-function.patch
allow-migration-of-mlocked-pages.patch
zoned-vm-counters-per-zone-counter-functionality.patch
zoned-vm-counters-include-per-zone-counters-in-proc-vmstat.patch
zoned-vm-counters-conversion-of-nr_mapped-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_pagecache-to-per-zone-counter.patch
zoned-vm-counters-use-per-zone-counters-to-remove-zone_reclaim_interval.patch
zoned-vm-counters-add-per-zone-counters-to-zone-node-and-global-vm-statistics.patch
zoned-vm-counters-conversion-of-nr_slab-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_pagetable-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_dirty-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_writeback-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter.patch
zoned-vm-counters-remove-unused-get_page_stat-functions.patch
zoned-vm-counters-conversion-of-nr_bounce-to-per-zone-counter.patch
zoned-vm-counters-remove-useless-writeback-structure.patch
cpuset-remove-extra-cpuset_zone_allowed-check-in-__alloc_pages.patch
swap_prefetch-conversion-of-nr_mapped-to-per-zone-counter.patch
swap_prefetch-conversion-of-nr_slab-to-per-zone-counter.patch
swap_prefetch-conversion-of-nr_dirty-to-per-zone-counter.patch
swap_prefetch-conversion-of-nr_writeback-to-per-zone-counter.patch
swap_prefetch-conversion-of-nr_unstable-to-per-zone-counter.patch
swap_prefetch-remove-unused-get_page_stat-functions.patch
reiser4-conversion-of-nr_dirty-to-per-zone-counter.patch
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