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mm: rename deactivate_page to deactivate_file_page 

"deactivate_page" was created for file invalidation so it has too
specific logic for file-backed pages.  So, let's change the name of the
function and date to a file-specific one and yield the generic name.

Signed-off-by: Minchan Kim <minchan@kernel.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Shaohua Li <shli@kernel.org>
Cc: Wang, Yalin <Yalin.Wang@sonymobile.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Minchan Kim 2015-04-15 16:13:26 -07:00 committed by Linus Torvalds
parent 922c0551a7
commit cc5993bd7b
3 changed files with 14 additions and 14 deletions
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2
include/linux/swap.h
View File

@ -307,7 +307,7 @@ extern void lru_add_drain(void);
extern void lru_add_drain_cpu(int cpu);
extern void lru_add_drain_all(void);
extern void rotate_reclaimable_page(struct page *page);
extern void deactivate_page(struct page *page);
extern void deactivate_file_page(struct page *page);
extern void swap_setup(void);
extern void add_page_to_unevictable_list(struct page *page);

24
mm/swap.c
View File

@ -42,7 +42,7 @@ int page_cluster;
static DEFINE_PER_CPU(struct pagevec, lru_add_pvec);
static DEFINE_PER_CPU(struct pagevec, lru_rotate_pvecs);
static DEFINE_PER_CPU(struct pagevec, lru_deactivate_pvecs);
static DEFINE_PER_CPU(struct pagevec, lru_deactivate_file_pvecs);
/*
* This path almost never happens for VM activity - pages are normally
@ -743,7 +743,7 @@ void lru_cache_add_active_or_unevictable(struct page *page,
* be write it out by flusher threads as this is much more effective
* than the single-page writeout from reclaim.
*/
static void lru_deactivate_fn(struct page *page, struct lruvec *lruvec,
static void lru_deactivate_file_fn(struct page *page, struct lruvec *lruvec,
void *arg)
{
int lru, file;
@ -811,36 +811,36 @@ void lru_add_drain_cpu(int cpu)
local_irq_restore(flags);
}
pvec = &per_cpu(lru_deactivate_pvecs, cpu);
pvec = &per_cpu(lru_deactivate_file_pvecs, cpu);
if (pagevec_count(pvec))
pagevec_lru_move_fn(pvec, lru_deactivate_fn, NULL);
pagevec_lru_move_fn(pvec, lru_deactivate_file_fn, NULL);
activate_page_drain(cpu);
}
/**
* deactivate_page - forcefully deactivate a page
* deactivate_file_page - forcefully deactivate a file page
* @page: page to deactivate
*
* This function hints the VM that @page is a good reclaim candidate,
* for example if its invalidation fails due to the page being dirty
* or under writeback.
*/
void deactivate_page(struct page *page)
void deactivate_file_page(struct page *page)
{
/*
* In a workload with many unevictable page such as mprotect, unevictable
* page deactivation for accelerating reclaim is pointless.
* In a workload with many unevictable page such as mprotect,
* unevictable page deactivation for accelerating reclaim is pointless.
*/
if (PageUnevictable(page))
return;
if (likely(get_page_unless_zero(page))) {
struct pagevec *pvec = &get_cpu_var(lru_deactivate_pvecs);
struct pagevec *pvec = &get_cpu_var(lru_deactivate_file_pvecs);
if (!pagevec_add(pvec, page))
pagevec_lru_move_fn(pvec, lru_deactivate_fn, NULL);
put_cpu_var(lru_deactivate_pvecs);
pagevec_lru_move_fn(pvec, lru_deactivate_file_fn, NULL);
put_cpu_var(lru_deactivate_file_pvecs);
}
}
@ -872,7 +872,7 @@ void lru_add_drain_all(void)
if (pagevec_count(&per_cpu(lru_add_pvec, cpu)) ||
pagevec_count(&per_cpu(lru_rotate_pvecs, cpu)) ||
pagevec_count(&per_cpu(lru_deactivate_pvecs, cpu)) ||
pagevec_count(&per_cpu(lru_deactivate_file_pvecs, cpu)) ||
need_activate_page_drain(cpu)) {
INIT_WORK(work, lru_add_drain_per_cpu);
schedule_work_on(cpu, work);

2
mm/truncate.c
View File

@ -490,7 +490,7 @@ unsigned long invalidate_mapping_pages(struct address_space *mapping,
* of interest and try to speed up its reclaim.
*/
if (!ret)
deactivate_page(page);
deactivate_file_page(page);
count += ret;
}
pagevec_remove_exceptionals(&pvec);