[PATCH v4, part3 08/15] mm: fix some trivial typos in comments

[Jiang Liu <liuj97@gmail.com>]

Fix some trivial typos in comments.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Wen Congyang <wency@cn.fujitsu.com>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Jiang Liu <jiang.liu@huawei.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
---
 mm/memory_hotplug.c |    2 +-
 mm/page_alloc.c     |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 57decb2..a5b8fde 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -309,7 +309,7 @@ static int __meminit move_pfn_range_left(struct zone *z1, struct zone *z2,
 	/* can't move pfns which are higher than @z2 */
 	if (end_pfn > zone_end_pfn(z2))
 		goto out_fail;
-	/* the move out part mast at the left most of @z2 */
+	/* the move out part must at the left most of @z2 */
 	if (start_pfn > z2->zone_start_pfn)
 		goto out_fail;
 	/* must included/overlap */
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 6bd697c..c3c3eda 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2863,7 +2863,7 @@ EXPORT_SYMBOL(free_pages_exact);
  * nr_free_zone_pages() counts the number of counts pages which are beyond the
  * high watermark within all zones at or below a given zone index.  For each
  * zone, the number of pages is calculated as:
- *     present_pages - high_pages
+ *     managed_pages - high_pages
  */
 static unsigned long nr_free_zone_pages(int offset)
 {
-- 
1.7.9.5

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