[rh7,14/25] ms/mm/compaction: clean up unused code lines

Submitted by Andrey Ryabinin on Jan. 24, 2018, 12:14 p.m.


Message ID 20180124121503.26930-15-aryabinin@virtuozzo.com
State New
Series "compaction related stable backports."
Headers show

Commit Message

Andrey Ryabinin Jan. 24, 2018, 12:14 p.m.
From: Heesub Shin <heesub.shin@samsung.com>

Remove code lines currently not in use or never called.

Signed-off-by: Heesub Shin <heesub.shin@samsung.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Dongjun Shin <d.j.shin@samsung.com>
Cc: Sunghwan Yun <sunghwan.yun@samsung.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Dongjun Shin <d.j.shin@samsung.com>
Cc: Sunghwan Yun <sunghwan.yun@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 13fb44e4b0414d7e718433a49e6430d5b76bd46e)
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
 mm/compaction.c | 10 ----------
 1 file changed, 10 deletions(-)

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diff --git a/mm/compaction.c b/mm/compaction.c
index ee0c1e4aecd7..ea44b4bf85d9 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -210,12 +210,6 @@  static bool compact_checklock_irqsave(spinlock_t *lock, unsigned long *flags,
 	return true;
-static inline bool compact_trylock_irqsave(spinlock_t *lock,
-			unsigned long *flags, struct compact_control *cc)
-	return compact_checklock_irqsave(lock, flags, false, cc);
 /* Returns true if the page is within a block suitable for migration to */
 static bool suitable_migration_target(struct page *page)
@@ -740,7 +734,6 @@  static void isolate_freepages(struct zone *zone,
 		/* Found a block suitable for isolating free pages from */
-		isolated = 0;
 		 * Take care when isolating in last pageblock of a zone which
@@ -1169,9 +1162,6 @@  static void __compact_pgdat(pg_data_t *pgdat, struct compact_control *cc)
 			if (zone_watermark_ok(zone, cc->order,
 						low_wmark_pages(zone), 0, 0))
 				compaction_defer_reset(zone, cc->order, false);
-			/* Currently async compaction is never deferred. */
-			else if (cc->sync)
-				defer_compaction(zone, cc->order);