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mm: drop unneeded double negations 

Remove double negations where the operand is already boolean.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Johannes Weiner 2009-09-21 17:02:56 -07:00 committed by Linus Torvalds
parent bba7881954
commit b7c46d151c
3 changed files with 6 additions and 6 deletions
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2
mm/memcontrol.c
View File

@ -648,7 +648,7 @@ unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
int nid = z->zone_pgdat->node_id;
int zid = zone_idx(z);
struct mem_cgroup_per_zone *mz;
int lru = LRU_FILE * !!file + !!active;
int lru = LRU_FILE * file + active;
int ret;
BUG_ON(!mem_cont);

2
mm/memory.c
View File

@ -599,7 +599,7 @@ copy_one_pte(struct mm_struct *dst_mm, struct mm_struct *src_mm,
if (page) {
get_page(page);
page_dup_rmap(page);
rss[!!PageAnon(page)]++;
rss[PageAnon(page)]++;
}
out_set_pte:

8
mm/vmscan.c
View File

@ -971,7 +971,7 @@ static unsigned long isolate_pages_global(unsigned long nr,
if (file)
lru += LRU_FILE;
return isolate_lru_pages(nr, &z->lru[lru].list, dst, scanned, order,
mode, !!file);
mode, file);
}
/*
@ -1209,7 +1209,7 @@ static unsigned long shrink_inactive_list(unsigned long max_scan,
lru = page_lru(page);
add_page_to_lru_list(zone, page, lru);
if (is_active_lru(lru)) {
int file = !!is_file_lru(lru);
int file = is_file_lru(lru);
reclaim_stat->recent_rotated[file]++;
}
if (!pagevec_add(&pvec, page)) {
@ -1319,7 +1319,7 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone,
if (scanning_global_lru(sc)) {
zone->pages_scanned += pgscanned;
}
reclaim_stat->recent_scanned[!!file] += nr_taken;
reclaim_stat->recent_scanned[file] += nr_taken;
__count_zone_vm_events(PGREFILL, zone, pgscanned);
if (file)
@ -1372,7 +1372,7 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone,
* helps balance scan pressure between file and anonymous pages in
* get_scan_ratio.
*/
reclaim_stat->recent_rotated[!!file] += nr_rotated;
reclaim_stat->recent_rotated[file] += nr_rotated;
move_active_pages_to_lru(zone, &l_active,
LRU_ACTIVE + file * LRU_FILE);