linux-kernel - [PATCH v16 04/22] mm/compaction: rename compact_deferred as compact_should

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Date:   Sat, 11 Jul 2020 08:58:38 +0800
From:   Alex Shi <alex.shi@...ux.alibaba.com>
To:     akpm@...ux-foundation.org, mgorman@...hsingularity.net,
        tj@...nel.org, hughd@...gle.com, khlebnikov@...dex-team.ru,
        daniel.m.jordan@...cle.com, yang.shi@...ux.alibaba.com,
        willy@...radead.org, hannes@...xchg.org, lkp@...el.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        cgroups@...r.kernel.org, shakeelb@...gle.com,
        iamjoonsoo.kim@....com, richard.weiyang@...il.com,
        kirill@...temov.name
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Mike Kravetz <mike.kravetz@...cle.com>
Subject: [PATCH v16 04/22] mm/compaction: rename compact_deferred as compact_should_defer

The compact_deferred is a defer suggestion check, deferring action does in
defer_compaction not here. so, better rename it to avoid confusing.

Signed-off-by: Alex Shi <alex.shi@...ux.alibaba.com>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Vlastimil Babka <vbabka@...e.cz>
Cc: Mike Kravetz <mike.kravetz@...cle.com>
Cc: linux-kernel@...r.kernel.org
Cc: linux-mm@...ck.org
---
 include/linux/compaction.h        | 4 ++--
 include/trace/events/compaction.h | 2 +-
 mm/compaction.c                   | 8 ++++----
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/include/linux/compaction.h b/include/linux/compaction.h
index 6fa0eea3f530..be9ed7437a38 100644
--- a/include/linux/compaction.h
+++ b/include/linux/compaction.h
@@ -100,7 +100,7 @@ extern enum compact_result compaction_suitable(struct zone *zone, int order,
 		unsigned int alloc_flags, int highest_zoneidx);
 
 extern void defer_compaction(struct zone *zone, int order);
-extern bool compaction_deferred(struct zone *zone, int order);
+extern bool compaction_should_defer(struct zone *zone, int order);
 extern void compaction_defer_reset(struct zone *zone, int order,
 				bool alloc_success);
 extern bool compaction_restarting(struct zone *zone, int order);
@@ -199,7 +199,7 @@ static inline void defer_compaction(struct zone *zone, int order)
 {
 }
 
-static inline bool compaction_deferred(struct zone *zone, int order)
+static inline bool compaction_should_defer(struct zone *zone, int order)
 {
 	return true;
 }
diff --git a/include/trace/events/compaction.h b/include/trace/events/compaction.h
index 54e5bf081171..33633c71df04 100644
--- a/include/trace/events/compaction.h
+++ b/include/trace/events/compaction.h
@@ -274,7 +274,7 @@
 		1UL << __entry->defer_shift)
 );
 
-DEFINE_EVENT(mm_compaction_defer_template, mm_compaction_deferred,
+DEFINE_EVENT(mm_compaction_defer_template, mm_compaction_should_defer,
 
 	TP_PROTO(struct zone *zone, int order),
 
diff --git a/mm/compaction.c b/mm/compaction.c
index cd1ef9e5e638..f14780fc296a 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -154,7 +154,7 @@ void defer_compaction(struct zone *zone, int order)
 }
 
 /* Returns true if compaction should be skipped this time */
-bool compaction_deferred(struct zone *zone, int order)
+bool compaction_should_defer(struct zone *zone, int order)
 {
 	unsigned long defer_limit = 1UL << zone->compact_defer_shift;
 
@@ -168,7 +168,7 @@ bool compaction_deferred(struct zone *zone, int order)
 	if (zone->compact_considered >= defer_limit)
 		return false;
 
-	trace_mm_compaction_deferred(zone, order);
+	trace_mm_compaction_should_defer(zone, order);
 
 	return true;
 }
@@ -2377,7 +2377,7 @@ enum compact_result try_to_compact_pages(gfp_t gfp_mask, unsigned int order,
 		enum compact_result status;
 
 		if (prio > MIN_COMPACT_PRIORITY
-					&& compaction_deferred(zone, order)) {
+				&& compaction_should_defer(zone, order)) {
 			rc = max_t(enum compact_result, COMPACT_DEFERRED, rc);
 			continue;
 		}
@@ -2561,7 +2561,7 @@ static void kcompactd_do_work(pg_data_t *pgdat)
 		if (!populated_zone(zone))
 			continue;
 
-		if (compaction_deferred(zone, cc.order))
+		if (compaction_should_defer(zone, cc.order))
 			continue;
 
 		if (compaction_suitable(zone, cc.order, 0, zoneid) !=
-- 
1.8.3.1