diff options
| author | Vinayak Menon <vinmenon@codeaurora.org> | 2015-07-13 13:24:55 +0530 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-25 16:03:59 -0700 |
| commit | e74a8a432ef2193d83f3dcea5bef9d02ca3b0999 (patch) | |
| tree | b3bc4641db9b33e39def3bf302ee545fc54bf2d2 /mm/filemap.c | |
| parent | 1c5466dbec98409c5882f297385d0730abab6cbb (diff) | |
mm: vmstat: add pageoutclean
vmstat events currently count pgpgout, but that includes
only the writebacks, and not the reclaim of clean
pages. Add an event to count clean page evictions. This is
helpful to evaluate page thrashing cases.
Change-Id: Icfb797877a544a58c289074bdc290dfbc1384514
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
Diffstat (limited to 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 1bb007624b53..a322c035c6b9 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -189,10 +189,12 @@ void __delete_from_page_cache(struct page *page, void *shadow, * invalidate any existing cleancache entries. We can't leave * stale data around in the cleancache once our page is gone */ - if (PageUptodate(page) && PageMappedToDisk(page)) + if (PageUptodate(page) && PageMappedToDisk(page)) { + count_vm_event(PGPGOUTCLEAN); cleancache_put_page(page); - else + } else { cleancache_invalidate_page(mapping, page); + } page_cache_tree_delete(mapping, page, shadow); |