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authorChristoph Lameter <clameter@sgi.com>2006-06-30 12:55:35 +0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-30 22:25:34 +0400
commit347ce434d57da80fd5809c0c836f206a50999c26 (patch)
treef730d151be77977f594e5cc083a93bbeb4c602cc /mm/vmstat.c
parent65ba55f500a37272985d071c9bbb35256a2f7c14 (diff)
downloadlinux-347ce434d57da80fd5809c0c836f206a50999c26.tar.xz
[PATCH] zoned vm counters: conversion of nr_pagecache to per zone counter
Currently a single atomic variable is used to establish the size of the page cache in the whole machine. The zoned VM counters have the same method of implementation as the nr_pagecache code but also allow the determination of the pagecache size per zone. Remove the special implementation for nr_pagecache and make it a zoned counter named NR_FILE_PAGES. Updates of the page cache counters are always performed with interrupts off. We can therefore use the __ variant here. 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>
Diffstat (limited to 'mm/vmstat.c')
-rw-r--r--mm/vmstat.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 4800091c129a..f16b33eb6d5c 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -20,12 +20,6 @@
*/
DEFINE_PER_CPU(struct page_state, page_states) = {0};
-atomic_t nr_pagecache = ATOMIC_INIT(0);
-EXPORT_SYMBOL(nr_pagecache);
-#ifdef CONFIG_SMP
-DEFINE_PER_CPU(long, nr_pagecache_local) = 0;
-#endif
-
static void __get_page_state(struct page_state *ret, int nr, cpumask_t *cpumask)
{
unsigned cpu;
@@ -402,6 +396,7 @@ struct seq_operations fragmentation_op = {
static char *vmstat_text[] = {
/* Zoned VM counters */
"nr_mapped",
+ "nr_file_pages",
/* Page state */
"nr_dirty",