mm-oom-introduce-oom-reaper-checkpatch-fixes

Cc: Mel Gorman <mgorman@suse.de>

WARNING: line over 80 characters
torvalds#124: FILE: mm/memory.c:1107:
+					/* oom_reaper cannot tear down dirty pages */

WARNING: line over 80 characters
torvalds#125: FILE: mm/memory.c:1108:
+					if (unlikely(details && details->ignore_dirty))

WARNING: line over 80 characters
torvalds#245: FILE: mm/oom_kill.c:483:
+		wait_event_freezable(oom_reaper_wait, (mm = READ_ONCE(mm_to_reap)));

WARNING: Missing a blank line after declarations
torvalds#245: FILE: mm/oom_kill.c:483:
+		struct mm_struct *mm;
+		wait_event_freezable(oom_reaper_wait, (mm = READ_ONCE(mm_to_reap)));

WARNING: line over 80 characters
torvalds#301: FILE: mm/oom_kill.c:721:
+			 * We cannot use oom_reaper for the mm shared by this process

WARNING: line over 80 characters
torvalds#302: FILE: mm/oom_kill.c:722:
+			 * because it wouldn't get killed and so the memory might be

total: 0 errors, 6 warnings, 228 lines checked

./patches/mm-oom-introduce-oom-reaper.patch has style problems, please review.

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.

Please run checkpatch prior to sending patches

Cc: Mel Gorman <mgorman@suse.de>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/memory.c

@@ -1105,7 +1105,10 @@ static unsigned long zap_pte_range(struct mmu_gather *tlb,
 
 			if (!PageAnon(page)) {
 				if (pte_dirty(ptent)) {
-					/* oom_reaper cannot tear down dirty pages */
+					/*
+					 * oom_reaper cannot tear down dirty
+					 * pages
+					 */
 					if (unlikely(details && details->ignore_dirty))
 						continue;
 					force_flush = 1;

mm/oom_kill.c

@@ -482,7 +482,9 @@ static int oom_reaper(void *unused)
 {
 	while (true) {
 		struct mm_struct *mm;
-		wait_event_freezable(oom_reaper_wait, (mm = READ_ONCE(mm_to_reap)));
+
+		wait_event_freezable(oom_reaper_wait,
+				     (mm = READ_ONCE(mm_to_reap)));
 		oom_reap_vmas(mm);
 		WRITE_ONCE(mm_to_reap, NULL);
 	}
@@ -720,9 +722,9 @@ void oom_kill_process(struct oom_control *oc, struct task_struct *p,
 		if (unlikely(p->flags & PF_KTHREAD) ||
 		    p->signal->oom_score_adj == OOM_SCORE_ADJ_MIN) {
 			/*
-			 * We cannot use oom_reaper for the mm shared by this process
-			 * because it wouldn't get killed and so the memory might be
-			 * still used.
+			 * We cannot use oom_reaper for the mm shared by this
+			 * process because it wouldn't get killed and so the
+			 * memory might be still used.
 			 */
 			can_oom_reap = false;
 			continue;