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authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>2009-01-07 18:08:15 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-08 08:31:07 -0800
commit6e9015716ae9b59e9635d692fddfcfb9582c146c (patch)
treee1876d3822c46a20e1c35b41580f5ef6b2f6e053 /include/linux
parentf89eb90e33fd4e4e0cc1a6d20afd63c5a561885a (diff)
downloadop-kernel-dev-6e9015716ae9b59e9635d692fddfcfb9582c146c.zip
op-kernel-dev-6e9015716ae9b59e9635d692fddfcfb9582c146c.tar.gz
mm: introduce zone_reclaim struct
Add zone_reclam_stat struct for later enhancement. A later patch uses this. This patch doesn't any behavior change (yet). Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: Rik van Riel <riel@redhat.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Hugh Dickins <hugh@veritas.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/mmzone.h24
1 files changed, 14 insertions, 10 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 35a7b5e..09c14e2 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -263,6 +263,19 @@ enum zone_type {
#error ZONES_SHIFT -- too many zones configured adjust calculation
#endif
+struct zone_reclaim_stat {
+ /*
+ * The pageout code in vmscan.c keeps track of how many of the
+ * mem/swap backed and file backed pages are refeferenced.
+ * The higher the rotated/scanned ratio, the more valuable
+ * that cache is.
+ *
+ * The anon LRU stats live in [0], file LRU stats in [1]
+ */
+ unsigned long recent_rotated[2];
+ unsigned long recent_scanned[2];
+};
+
struct zone {
/* Fields commonly accessed by the page allocator */
unsigned long pages_min, pages_low, pages_high;
@@ -315,16 +328,7 @@ struct zone {
unsigned long nr_scan;
} lru[NR_LRU_LISTS];
- /*
- * The pageout code in vmscan.c keeps track of how many of the
- * mem/swap backed and file backed pages are refeferenced.
- * The higher the rotated/scanned ratio, the more valuable
- * that cache is.
- *
- * The anon LRU stats live in [0], file LRU stats in [1]
- */
- unsigned long recent_rotated[2];
- unsigned long recent_scanned[2];
+ struct zone_reclaim_stat reclaim_stat;
unsigned long pages_scanned; /* since last reclaim */
unsigned long flags; /* zone flags, see below */
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