[PATCH] mm: init gfp mask in kcompactd_do_work()

[Xishi Qiu]

We will use gfp_mask in the following path, but it's not init.

kcompactd_do_work
        compact_zone
                gfpflags_to_migratetype

However if not init, gfp_mask is always 0, and the result of
gfpflags_to_migratetype(0) and gfpflags_to_migratetype(GFP_KERNEL)
are the same, but it's a little confusion, so init it first.

Signed-off-by: Xishi Qiu <qiuxi...@huawei.com>
---
 mm/compaction.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/compaction.c b/mm/compaction.c
index 9affb29..4b9a9d1 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1895,10 +1895,10 @@ static void kcompactd_do_work(pg_data_t *pgdat)
        struct zone *zone;
        struct compact_control cc = {
                .order = pgdat->kcompactd_max_order,
+               .gfp_mask = GFP_KERNEL,
                .classzone_idx = pgdat->kcompactd_classzone_idx,
                .mode = MIGRATE_SYNC_LIGHT,
                .ignore_skip_hint = true,
-
        };
        bool success = false;
 
-- 
1.8.3.1