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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2005-05-01 08:58:37 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-01 08:58:37 -0700
commitedfbe2b0038723e5699ab22695ccd62b5542a5c1 (patch)
treef1c613d32824f274b0e3daf492e87b0c9051c789 /include
parent2054606ad6dd6fee559fe790f190b15ed9355237 (diff)
[PATCH] count bounce buffer pages in vmstat
This is a patch for counting the number of pages for bounce buffers. It's shown in /proc/vmstat. Currently, the number of bounce pages are not counted anywhere. So, if there are many bounce pages, it seems that there are leaked pages. And it's difficult for a user to imagine the usage of bounce pages. So, it's meaningful to show # of bouce pages. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/page-flags.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 6b74fcf5bb6..39ab8c6b565 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -131,6 +131,7 @@ struct page_state {
unsigned long allocstall; /* direct reclaim calls */
unsigned long pgrotated; /* pages rotated to tail of the LRU */
+ unsigned long nr_bounce; /* pages for bounce buffers */
};
extern void get_page_state(struct page_state *ret);