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Commit ff321fea authored by Minchan Kim's avatar Minchan Kim Committed by Linus Torvalds
Browse files

mm: rename try_set_zone_oom() to try_set_zonelist_oom() 



We have been used naming try_set_zone_oom and clear_zonelist_oom.
The role of functions is to lock of zonelist for preventing parallel
OOM. So clear_zonelist_oom makes sense but try_set_zone_oome is rather
awkward and unmatched with clear_zonelist_oom.

Let's change it with try_set_zonelist_oom.

Signed-off-by: default avatarMinchan Kim <minchan.kim@gmail.com>
Acked-by: default avatarDavid Rientjes <rientjes@google.com>
Reviewed-by: default avatarKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent b940fd70

include/linux/oom.h

+1 −1
Original line number Diff line number Diff line
@@ -25,7 +25,7 @@ enum oom_constraint { 
	CONSTRAINT_MEMCG,

};



extern int try_set_zone_oom(struct zonelist *zonelist, gfp_t gfp_flags);

extern int try_set_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags);

extern void clear_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags);



extern void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask,

mm/oom_kill.c

+2 −2
Original line number Diff line number Diff line
@@ -549,7 +549,7 @@ EXPORT_SYMBOL_GPL(unregister_oom_notifier); 
 * if a parallel OOM killing is already taking place that includes a zone in

 * the zonelist.  Otherwise, locks all zones in the zonelist and returns 1.

 */

int try_set_zone_oom(struct zonelist *zonelist, gfp_t gfp_mask)

int try_set_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_mask)

{

	struct zoneref *z;

	struct zone *zone;
@@ -566,7 +566,7 @@ int try_set_zone_oom(struct zonelist *zonelist, gfp_t gfp_mask) 
	for_each_zone_zonelist(zone, z, zonelist, gfp_zone(gfp_mask)) {

		/*

		 * Lock each zone in the zonelist under zone_scan_lock so a

		 * parallel invocation of try_set_zone_oom() doesn't succeed

		 * parallel invocation of try_set_zonelist_oom() doesn't succeed

		 * when it shouldn't.

		 */

		zone_set_flag(zone, ZONE_OOM_LOCKED);

mm/page_alloc.c

+1 −1
Original line number Diff line number Diff line
@@ -1738,7 +1738,7 @@ __alloc_pages_may_oom(gfp_t gfp_mask, unsigned int order, 
	struct page *page;



	/* Acquire the OOM killer lock for the zones in zonelist */

	if (!try_set_zone_oom(zonelist, gfp_mask)) {

	if (!try_set_zonelist_oom(zonelist, gfp_mask)) {

		schedule_timeout_uninterruptible(1);

		return NULL;

	}