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mm/readahead.c, mm/vmscan.c: use lru_to_page instead of list_to_page 

list_to_page() in readahead.c is the same as lru_to_page() in vmscan.c.
So I move lru_to_page to internal.h and drop list_to_page().

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Geliang Tang 2016-01-14 15:20:51 -08:00 committed by Linus Torvalds
parent 7546934570
commit c8ad6302c2
3 changed files with 5 additions and 7 deletions
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2
mm/internal.h
View File

@ -119,6 +119,8 @@ extern int isolate_lru_page(struct page *page);
extern void putback_lru_page(struct page *page);
extern bool zone_reclaimable(struct zone *zone);
#define lru_to_page(_head) (list_entry((_head)->prev, struct page, lru))
/*
* in mm/rmap.c:
*/

8
mm/readahead.c
View File

@ -32,8 +32,6 @@ file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping)
}
EXPORT_SYMBOL_GPL(file_ra_state_init);
#define list_to_page(head) (list_entry((head)->prev, struct page, lru))
/*
* see if a page needs releasing upon read_cache_pages() failure
* - the caller of read_cache_pages() may have set PG_private or PG_fscache
@ -64,7 +62,7 @@ static void read_cache_pages_invalidate_pages(struct address_space *mapping,
struct page *victim;
while (!list_empty(pages)) {
victim = list_to_page(pages);
victim = lru_to_page(pages);
list_del(&victim->lru);
read_cache_pages_invalidate_page(mapping, victim);
}
@ -87,7 +85,7 @@ int read_cache_pages(struct address_space *mapping, struct list_head *pages,
int ret = 0;
while (!list_empty(pages)) {
page = list_to_page(pages);
page = lru_to_page(pages);
list_del(&page->lru);
if (add_to_page_cache_lru(page, mapping, page->index,
mapping_gfp_constraint(mapping, GFP_KERNEL))) {
@ -125,7 +123,7 @@ static int read_pages(struct address_space *mapping, struct file *filp,
}
for (page_idx = 0; page_idx < nr_pages; page_idx++) {
struct page *page = list_to_page(pages);
struct page *page = lru_to_page(pages);
list_del(&page->lru);
if (!add_to_page_cache_lru(page, mapping, page->index,
mapping_gfp_constraint(mapping, GFP_KERNEL))) {

2
mm/vmscan.c
View File

@ -106,8 +106,6 @@ struct scan_control {
unsigned long nr_reclaimed;
};
#define lru_to_page(_head) (list_entry((_head)->prev, struct page, lru))
#ifdef ARCH_HAS_PREFETCH
#define prefetch_prev_lru_page(_page, _base, _field) \
do { \