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| author | Christoph Lameter | 2006-06-30 10:55:34 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2006-06-30 20:25:34 +0200 |
| commit | 65ba55f500a37272985d071c9bbb35256a2f7c14 (patch) | |
| tree | e7735326ef2d2dca9d00a6c5ae47e9eb03c7834f /drivers/base/node.c | |
| parent | [PATCH] zoned vm counters: basic ZVC (zoned vm counter) implementation (diff) | |
| download | kernel-qcow2-linux-65ba55f500a37272985d071c9bbb35256a2f7c14.tar.gz kernel-qcow2-linux-65ba55f500a37272985d071c9bbb35256a2f7c14.tar.xz kernel-qcow2-linux-65ba55f500a37272985d071c9bbb35256a2f7c14.zip | |
[PATCH] zoned vm counters: convert nr_mapped to per zone counter
nr_mapped is important because it allows a determination of 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_FILE_MAPPED (the anonymous pages will be split off
from NR_MAPPED in the next patch).
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).
[akpm@osdl.org: bugfix]
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 'drivers/base/node.c')
| -rw-r--r-- | drivers/base/node.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/base/node.c b/drivers/base/node.c index eae2bdc183bb..8b1232320a99 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -54,8 +54,6 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf) ps.nr_dirty = 0; if ((long)ps.nr_writeback < 0) ps.nr_writeback = 0; - if ((long)ps.nr_mapped < 0) - ps.nr_mapped = 0; if ((long)ps.nr_slab < 0) ps.nr_slab = 0; @@ -84,7 +82,7 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf) nid, K(i.freeram - i.freehigh), nid, K(ps.nr_dirty), nid, K(ps.nr_writeback), - nid, K(ps.nr_mapped), + nid, K(node_page_state(nid, NR_FILE_MAPPED)), nid, K(ps.nr_slab)); n += hugetlb_report_node_meminfo(nid, buf + n); return n; |