ChangeLog
Since v2
- Changed display order, now, "buffer" field display right after unstable
Since v1
- Fixed showing the number with kilobyte unit issue
================
Subject: [PATCH] add buffer cache information to show_free_areas()
When administrator analysis memory shortage reason from OOM log, They
often need to know rest number of cache like pages.
Then, show_free_areas() shouldn't only display page cache, but also it
should display buffer cache.
Signed-off-by: KOSAKI Motohiro <
kosaki.motohiro@...>
Acked-by: Wu Fengguang <
fengguang.wu@...>
---
mm/page_alloc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
Index: b/mm/page_alloc.c
===================================================================
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2118,7 +2118,7 @@ void show_free_areas(void)
printk("Active_anon:%lu active_file:%lu inactive_anon:%lu\n"
" inactive_file:%lu"
" unevictable:%lu"
- " dirty:%lu writeback:%lu unstable:%lu\n"
+ " dirty:%lu writeback:%lu unstable:%lu buffer:%lu\n"
" free:%lu slab_reclaimable:%lu slab_unreclaimable:%lu\n"
" mapped:%lu pagetables:%lu bounce:%lu\n",
global_page_state(NR_ACTIVE_ANON),
@@ -2129,6 +2129,7 @@ void show_free_areas(void)
global_page_state(NR_FILE_DIRTY),
global_page_state(NR_WRITEBACK),
global_page_state(NR_UNSTABLE_NFS),
+ nr_blockdev_pages(),
global_page_state(NR_FREE_PAGES),
global_page_state(NR_SLAB_RECLAIMABLE),
global_page_state(NR_SLAB_UNRECLAIMABLE),
--
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