linux-kernel - [PATCHv2 3/3] zsmalloc: add compaction callbacks

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Date:	Sat, 26 Sep 2015 10:09:43 +0200
From:	Vitaly Wool <vitalywool@...il.com>
To:	ddstreet@...e.org, akpm@...ux-foundation.org,
	Seth Jennings <sjennings@...iantweb.net>,
	Minchan Kim <minchan@...nel.org>,
	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Linux-MM <linux-mm@...ck.org>
Subject: [PATCHv2 3/3] zsmalloc: add compaction callbacks

Add compaction callbacks for zpool compaction API extension.

Signed-off-by: Vitaly Wool <vitalywool@...il.com>
---
 mm/zsmalloc.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index f135b1b..8f2ddd1 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -365,6 +365,19 @@ static void zs_zpool_unmap(void *pool, unsigned long handle)
 	zs_unmap_object(pool, handle);
 }
 
+static unsigned long zs_zpool_compact(void *pool)
+{
+	return zs_compact(pool);
+}
+
+static unsigned long zs_zpool_get_compacted(void *pool)
+{
+	struct zs_pool_stats stats;
+
+	zs_pool_stats(pool, &stats);
+	return stats.pages_compacted;
+}
+
 static u64 zs_zpool_total_size(void *pool)
 {
 	return zs_get_total_pages(pool) << PAGE_SHIFT;
@@ -380,6 +393,8 @@ static struct zpool_driver zs_zpool_driver = {
 	.shrink =	zs_zpool_shrink,
 	.map =		zs_zpool_map,
 	.unmap =	zs_zpool_unmap,
+	.compact =	zs_zpool_compact,
+	.get_num_compacted =	zs_zpool_get_compacted,
 	.total_size =	zs_zpool_total_size,
 };
 
-- 
1.9.1
--
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