Contributors: 15
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Hugh Dickins |
116 |
25.49% |
5 |
19.23% |
| Johannes Weiner |
108 |
23.74% |
4 |
15.38% |
| Andrew Morton |
48 |
10.55% |
1 |
3.85% |
| Christoph Lameter |
38 |
8.35% |
2 |
7.69% |
| Mel Gorman |
35 |
7.69% |
2 |
7.69% |
| Lee Schermerhorn |
34 |
7.47% |
1 |
3.85% |
| Rik Van Riel |
29 |
6.37% |
3 |
11.54% |
| MinChan Kim |
17 |
3.74% |
1 |
3.85% |
| Andrea Arcangeli |
12 |
2.64% |
1 |
3.85% |
| Geliang Tang |
7 |
1.54% |
1 |
3.85% |
| Konstantin Khlebnikov |
4 |
0.88% |
1 |
3.85% |
| Lisa Du |
3 |
0.66% |
1 |
3.85% |
| Michal Hocko |
2 |
0.44% |
1 |
3.85% |
| Nicholas Piggin |
1 |
0.22% |
1 |
3.85% |
| Greg Kroah-Hartman |
1 |
0.22% |
1 |
3.85% |
| Total |
455 |
|
26 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef LINUX_MM_INLINE_H
#define LINUX_MM_INLINE_H
#include <linux/huge_mm.h>
#include <linux/swap.h>
/**
* page_is_file_cache - should the page be on a file LRU or anon LRU?
* @page: the page to test
*
* Returns 1 if @page is page cache page backed by a regular filesystem,
* or 0 if @page is anonymous, tmpfs or otherwise ram or swap backed.
* Used by functions that manipulate the LRU lists, to sort a page
* onto the right LRU list.
*
* We would like to get this info without a page flag, but the state
* needs to survive until the page is last deleted from the LRU, which
* could be as far down as __page_cache_release.
*/
static inline int page_is_file_cache(struct page *page)
{
return !PageSwapBacked(page);
}
static __always_inline void __update_lru_size(struct lruvec *lruvec,
enum lru_list lru, enum zone_type zid,
int nr_pages)
{
struct pglist_data *pgdat = lruvec_pgdat(lruvec);
__mod_node_page_state(pgdat, NR_LRU_BASE + lru, nr_pages);
__mod_zone_page_state(&pgdat->node_zones[zid],
NR_ZONE_LRU_BASE + lru, nr_pages);
}
static __always_inline void update_lru_size(struct lruvec *lruvec,
enum lru_list lru, enum zone_type zid,
int nr_pages)
{
__update_lru_size(lruvec, lru, zid, nr_pages);
#ifdef CONFIG_MEMCG
mem_cgroup_update_lru_size(lruvec, lru, zid, nr_pages);
#endif
}
static __always_inline void add_page_to_lru_list(struct page *page,
struct lruvec *lruvec, enum lru_list lru)
{
update_lru_size(lruvec, lru, page_zonenum(page), hpage_nr_pages(page));
list_add(&page->lru, &lruvec->lists[lru]);
}
static __always_inline void add_page_to_lru_list_tail(struct page *page,
struct lruvec *lruvec, enum lru_list lru)
{
update_lru_size(lruvec, lru, page_zonenum(page), hpage_nr_pages(page));
list_add_tail(&page->lru, &lruvec->lists[lru]);
}
static __always_inline void del_page_from_lru_list(struct page *page,
struct lruvec *lruvec, enum lru_list lru)
{
list_del(&page->lru);
update_lru_size(lruvec, lru, page_zonenum(page), -hpage_nr_pages(page));
}
/**
* page_lru_base_type - which LRU list type should a page be on?
* @page: the page to test
*
* Used for LRU list index arithmetic.
*
* Returns the base LRU type - file or anon - @page should be on.
*/
static inline enum lru_list page_lru_base_type(struct page *page)
{
if (page_is_file_cache(page))
return LRU_INACTIVE_FILE;
return LRU_INACTIVE_ANON;
}
/**
* page_off_lru - which LRU list was page on? clearing its lru flags.
* @page: the page to test
*
* Returns the LRU list a page was on, as an index into the array of LRU
* lists; and clears its Unevictable or Active flags, ready for freeing.
*/
static __always_inline enum lru_list page_off_lru(struct page *page)
{
enum lru_list lru;
if (PageUnevictable(page)) {
__ClearPageUnevictable(page);
lru = LRU_UNEVICTABLE;
} else {
lru = page_lru_base_type(page);
if (PageActive(page)) {
__ClearPageActive(page);
lru += LRU_ACTIVE;
}
}
return lru;
}
/**
* page_lru - which LRU list should a page be on?
* @page: the page to test
*
* Returns the LRU list a page should be on, as an index
* into the array of LRU lists.
*/
static __always_inline enum lru_list page_lru(struct page *page)
{
enum lru_list lru;
if (PageUnevictable(page))
lru = LRU_UNEVICTABLE;
else {
lru = page_lru_base_type(page);
if (PageActive(page))
lru += LRU_ACTIVE;
}
return lru;
}
#define lru_to_page(head) (list_entry((head)->prev, struct page, lru))
#endif