Contributors: 15
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Yu Zhao |
213 |
53.65% |
7 |
26.92% |
| Hugh Dickins |
39 |
9.82% |
1 |
3.85% |
| Christoph Lameter |
30 |
7.56% |
2 |
7.69% |
| Rik Van Riel |
27 |
6.80% |
2 |
7.69% |
| Andrew Morton |
20 |
5.04% |
1 |
3.85% |
| MinChan Kim |
17 |
4.28% |
1 |
3.85% |
| Mel Gorman |
16 |
4.03% |
2 |
7.69% |
| Johannes Weiner |
14 |
3.53% |
3 |
11.54% |
| Lee Schermerhorn |
10 |
2.52% |
1 |
3.85% |
| Lisa Du |
3 |
0.76% |
1 |
3.85% |
| Konstantin Khlebnikov |
2 |
0.50% |
1 |
3.85% |
| Huang Ying |
2 |
0.50% |
1 |
3.85% |
| Michal Hocko |
2 |
0.50% |
1 |
3.85% |
| Nicholas Piggin |
1 |
0.25% |
1 |
3.85% |
| Greg Kroah-Hartman |
1 |
0.25% |
1 |
3.85% |
| Total |
397 |
|
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_lru - should the page be on a file LRU or anon LRU?
* @page: the page to test
*
* Returns 1 if @page is a regular filesystem backed page cache page or a lazily
* freed anonymous page (e.g. via MADV_FREE). Returns 0 if @page is a normal
* anonymous page, a tmpfs page or otherwise ram or swap backed page. 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_lru(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_lruvec_state(lruvec, NR_LRU_BASE + lru, nr_pages);
__mod_zone_page_state(&pgdat->node_zones[zid],
NR_ZONE_LRU_BASE + lru, nr_pages);
#ifdef CONFIG_MEMCG
mem_cgroup_update_lru_size(lruvec, lru, zid, nr_pages);
#endif
}
/**
* __clear_page_lru_flags - clear page lru flags before releasing a page
* @page: the page that was on lru and now has a zero reference
*/
static __always_inline void __clear_page_lru_flags(struct page *page)
{
VM_BUG_ON_PAGE(!PageLRU(page), page);
__ClearPageLRU(page);
/* this shouldn't happen, so leave the flags to bad_page() */
if (PageActive(page) && PageUnevictable(page))
return;
__ClearPageActive(page);
__ClearPageUnevictable(page);
}
/**
* 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;
VM_BUG_ON_PAGE(PageActive(page) && PageUnevictable(page), page);
if (PageUnevictable(page))
return LRU_UNEVICTABLE;
lru = page_is_file_lru(page) ? LRU_INACTIVE_FILE : LRU_INACTIVE_ANON;
if (PageActive(page))
lru += LRU_ACTIVE;
return lru;
}
static __always_inline void add_page_to_lru_list(struct page *page,
struct lruvec *lruvec)
{
enum lru_list lru = page_lru(page);
update_lru_size(lruvec, lru, page_zonenum(page), thp_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 = page_lru(page);
update_lru_size(lruvec, lru, page_zonenum(page), thp_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)
{
list_del(&page->lru);
update_lru_size(lruvec, page_lru(page), page_zonenum(page),
-thp_nr_pages(page));
}
#endif