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mm: replace init_page_accessed by __SetPageReferenced

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Do we really need an exported alias for __SetPageReferenced()? Its
callers better know what they're doing, in which case the page would not
be already marked referenced.  Kill init_page_accessed(), just
__SetPageReferenced() inline.

Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Hugh Dickins 2014-08-06 16:06:43 -07:00 committed by Linus Torvalds
parent c2ea2181db
commit eb39d618f9
4 changed files with 6 additions and 15 deletions
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1
include/linux/swap.h
View File

@ -311,7 +311,6 @@ extern void lru_add_page_tail(struct page *page, struct page *page_tail,
struct lruvec *lruvec, struct list_head *head);
extern void activate_page(struct page *);
extern void mark_page_accessed(struct page *);
extern void init_page_accessed(struct page *page);
extern void lru_add_drain(void);
extern void lru_add_drain_cpu(int cpu);
extern void lru_add_drain_all(void);

4
mm/filemap.c
View File

@ -1091,9 +1091,9 @@ no_page:
if (WARN_ON_ONCE(!(fgp_flags & FGP_LOCK)))
fgp_flags |= FGP_LOCK;
/* Init accessed so avoit atomic mark_page_accessed later */
/* Init accessed so avoid atomic mark_page_accessed later */
if (fgp_flags & FGP_ACCESSED)
init_page_accessed(page);
__SetPageReferenced(page);
err = add_to_page_cache_lru(page, mapping, offset, radix_gfp_mask);
if (unlikely(err)) {

2
mm/shmem.c
View File

@ -1166,7 +1166,7 @@ repeat:
__SetPageSwapBacked(page);
__set_page_locked(page);
if (sgp == SGP_WRITE)
init_page_accessed(page);
__SetPageReferenced(page);
error = mem_cgroup_charge_file(page, current->mm,
gfp & GFP_RECLAIM_MASK);

14
mm/swap.c
View File

@ -589,6 +589,9 @@ static void __lru_cache_activate_page(struct page *page)
* inactive,unreferenced -> inactive,referenced
* inactive,referenced -> active,unreferenced
* active,unreferenced -> active,referenced
*
* When a newly allocated page is not yet visible, so safe for non-atomic ops,
* __SetPageReferenced(page) may be substituted for mark_page_accessed(page).
*/
void mark_page_accessed(struct page *page)
{
@ -614,17 +617,6 @@ void mark_page_accessed(struct page *page)
}
EXPORT_SYMBOL(mark_page_accessed);
/*
* Used to mark_page_accessed(page) that is not visible yet and when it is
* still safe to use non-atomic ops
*/
void init_page_accessed(struct page *page)
{
if (!PageReferenced(page))
__SetPageReferenced(page);
}
EXPORT_SYMBOL(init_page_accessed);
static void __lru_cache_add(struct page *page)
{
struct pagevec *pvec = &get_cpu_var(lru_add_pvec);