linux-kernel - [PATCH 3.14 107/122] mm/compaction: clean up unused code lines

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Date:	Wed, 19 Nov 2014 12:52:37 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Heesub Shin <heesub.shin@...sung.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	Dongjun Shin <d.j.shin@...sung.com>,
	Sunghwan Yun <sunghwan.yun@...sung.com>,
	Minchan Kim <minchan@...nel.org>, Mel Gorman <mgorman@...e.de>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Michal Nazarewicz <mina86@...a86.com>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Christoph Lameter <cl@...ux.com>,
	Rik van Riel <riel@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [PATCH 3.14 107/122] mm/compaction: clean up unused code lines

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Heesub Shin <heesub.shin@...sung.com>

commit 13fb44e4b0414d7e718433a49e6430d5b76bd46e upstream.

Remove code lines currently not in use or never called.

Signed-off-by: Heesub Shin <heesub.shin@...sung.com>
Acked-by: Vlastimil Babka <vbabka@...e.cz>
Cc: Dongjun Shin <d.j.shin@...sung.com>
Cc: Sunghwan Yun <sunghwan.yun@...sung.com>
Cc: Minchan Kim <minchan@...nel.org>
Cc: Mel Gorman <mgorman@...e.de>
Cc: Joonsoo Kim <iamjoonsoo.kim@....com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc: Michal Nazarewicz <mina86@...a86.com>
Cc: Naoya Horiguchi <n-horiguchi@...jp.nec.com>
Cc: Christoph Lameter <cl@...ux.com>
Cc: Rik van Riel <riel@...hat.com>
Cc: Dongjun Shin <d.j.shin@...sung.com>
Cc: Sunghwan Yun <sunghwan.yun@...sung.com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Mel Gorman <mgorman@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 mm/compaction.c |   10 ----------
 1 file changed, 10 deletions(-)

--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -208,12 +208,6 @@ static bool compact_checklock_irqsave(sp
 	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)
 {
@@ -736,7 +730,6 @@ static void isolate_freepages(struct zon
 			continue;
 
 		/* Found a block suitable for isolating free pages from */
-		isolated = 0;
 
 		/*
 		 * Take care when isolating in last pageblock of a zone which
@@ -1165,9 +1158,6 @@ static void __compact_pgdat(pg_data_t *p
 			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);
 		}
 
 		VM_BUG_ON(!list_empty(&cc->freepages));


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