lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

mm: introduce page_lru_base_type()

Browse Source 
Instead of abusing page_is_file_cache() for LRU list index arithmetic, add
another helper with a more appropriate name and convert the non-boolean
users of page_is_file_cache() accordingly.

This new helper gives the LRU base type a page is supposed to live on,
inactive anon or inactive file.

[hugh.dickins@tiscali.co.uk: convert del_page_from_lru() also]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Reviewed-by: 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>
This commit is contained in:
Johannes Weiner
2009-09-21 17:02:58 -07:00
committed by Linus Torvalds
parent b7c46d151c
commit 401a8e1c16
3 changed files with 24 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
mm/vmscan.c
View File

@@ -531,7 +531,7 @@ redo:
* unevictable page on [in]active list.
* We know how to handle that.
*/
lru = active + page_is_file_cache(page);
lru = active + page_lru_base_type(page);
lru_cache_add_lru(page, lru);
} else {
/*
@@ -986,7 +986,7 @@ static unsigned long clear_active_flags(struct list_head *page_list,
struct page *page;
list_for_each_entry(page, page_list, lru) {
lru = page_is_file_cache(page);
lru = page_lru_base_type(page);
if (PageActive(page)) {
lru += LRU_ACTIVE;
ClearPageActive(page);
@@ -2652,7 +2652,7 @@ static void check_move_unevictable_page(struct page *page, struct zone *zone)
retry:
ClearPageUnevictable(page);
if (page_evictable(page, NULL)) {
enum lru_list l = LRU_INACTIVE_ANON + page_is_file_cache(page);
enum lru_list l = page_lru_base_type(page);
__dec_zone_state(zone, NR_UNEVICTABLE);
list_move(&page->lru, &zone->lru[l].list);