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mm: remove redundant initialization

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pg_data_t is zeroed before reaching free_area_init_core(), so remove the
now unnecessary initializations.

Signed-off-by: Minchan Kim <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Ralf Baechle <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Minchan Kim 2012-07-31 16:46:16 -07:00 • committed by Linus Torvalds
commit 6527af5d1b
2 changed files with 2 additions and 12 deletions
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9
mm/page_alloc.c
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@ -4377,6 +4377,8 @@ void __init set_pageblock_order(void)
* - mark all pages reserved
* - mark all memory queues empty
* - clear the memory bitmaps
*
* NOTE: pgdat should get zeroed by caller.
*/
static void __paginginit free_area_init_core(struct pglist_data *pgdat,
unsigned long *zones_size, unsigned long *zholes_size)
@ -4387,10 +4389,8 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat,
int ret;
pgdat_resize_init(pgdat);
pgdat->nr_zones = 0;
init_waitqueue_head(&pgdat->kswapd_wait);
init_waitqueue_head(&pgdat->pfmemalloc_wait);
pgdat->kswapd_max_order = 0;
pgdat_page_cgroup_init(pgdat);
for (j = 0; j < MAX_NR_ZONES; j++) {
@ -4451,11 +4451,6 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat,
zone_pcp_init(zone);
lruvec_init(&zone->lruvec, zone);
zap_zone_vm_stats(zone);
zone->flags = 0;
#ifdef CONFIG_MEMORY_ISOLATION
zone->nr_pageblock_isolate = 0;
#endif
if (!size)
continue;