linux-kernel - [PATCH 10/12] mm: compaction: make compaction_zonelist_suitable return false when COMPACT

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Date:   Mon, 18 Apr 2022 22:12:51 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <vbabka@...e.cz>, <pintu@...eaurora.org>,
        <charante@...eaurora.org>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>, <linmiaohe@...wei.com>
Subject: [PATCH 10/12] mm: compaction: make compaction_zonelist_suitable return false when COMPACT_SUCCESS

When compact_result indicates that the allocation should now succeed,
i.e. compact_result = COMPACT_SUCCESS, compaction_zonelist_suitable
should return false because there is no need to do compaction now.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/compaction.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/compaction.c b/mm/compaction.c
index 82c54d70a978..334a573485fe 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -2291,7 +2291,7 @@ bool compaction_zonelist_suitable(struct alloc_context *ac, int order,
 		available += zone_page_state_snapshot(zone, NR_FREE_PAGES);
 		compact_result = __compaction_suitable(zone, order, alloc_flags,
 				ac->highest_zoneidx, available);
-		if (compact_result != COMPACT_SKIPPED)
+		if (compact_result == COMPACT_CONTINUE)
 			return true;
 	}
 
-- 
2.23.0