diff options
| author | Christoph Lameter <clameter@sgi.com> | 2006-06-30 01:55:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-30 11:25:34 -0700 |
| commit | 347ce434d57da80fd5809c0c836f206a50999c26 (patch) | |
| tree | f730d151be77977f594e5cc083a93bbeb4c602cc /arch | |
| parent | 65ba55f500a37272985d071c9bbb35256a2f7c14 (diff) | |
| download | linux-347ce434d57da80fd5809c0c836f206a50999c26.tar.bz2 | |
[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 'arch')
| -rw-r--r-- | arch/s390/appldata/appldata_mem.c | 3 | ||||
| -rw-r--r-- | arch/sparc/kernel/sys_sunos.c | 2 | ||||
| -rw-r--r-- | arch/sparc64/kernel/sys_sunos32.c | 2 |
3 files changed, 4 insertions, 3 deletions
diff --git a/arch/s390/appldata/appldata_mem.c b/arch/s390/appldata/appldata_mem.c index 7915a197d96d..180ba79a6267 100644 --- a/arch/s390/appldata/appldata_mem.c +++ b/arch/s390/appldata/appldata_mem.c @@ -130,7 +130,8 @@ static void appldata_get_mem_data(void *data) mem_data->totalhigh = P2K(val.totalhigh); mem_data->freehigh = P2K(val.freehigh); mem_data->bufferram = P2K(val.bufferram); - mem_data->cached = P2K(atomic_read(&nr_pagecache) - val.bufferram); + mem_data->cached = P2K(global_page_state(NR_FILE_PAGES) + - val.bufferram); si_swapinfo(&val); mem_data->totalswap = P2K(val.totalswap); diff --git a/arch/sparc/kernel/sys_sunos.c b/arch/sparc/kernel/sys_sunos.c index 288de276d9ff..aa0fb2efb615 100644 --- a/arch/sparc/kernel/sys_sunos.c +++ b/arch/sparc/kernel/sys_sunos.c @@ -196,7 +196,7 @@ asmlinkage int sunos_brk(unsigned long brk) * simple, it hopefully works in most obvious cases.. Easy to * fool it, but this should catch most mistakes. */ - freepages = get_page_cache_size(); + freepages = global_page_state(NR_FILE_PAGES); freepages >>= 1; freepages += nr_free_pages(); freepages += nr_swap_pages; diff --git a/arch/sparc64/kernel/sys_sunos32.c b/arch/sparc64/kernel/sys_sunos32.c index ae5b32f817f0..87ebdf858a3a 100644 --- a/arch/sparc64/kernel/sys_sunos32.c +++ b/arch/sparc64/kernel/sys_sunos32.c @@ -155,7 +155,7 @@ asmlinkage int sunos_brk(u32 baddr) * simple, it hopefully works in most obvious cases.. Easy to * fool it, but this should catch most mistakes. */ - freepages = get_page_cache_size(); + freepages = global_page_state(NR_FILE_PAGES); freepages >>= 1; freepages += nr_free_pages(); freepages += nr_swap_pages; |