linux-kernel - [PATCH 4/4] mm/swapfile.c: move new_cluster to check free

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Message-Id: <20200419013921.14390-4-richard.weiyang@gmail.com>
Date:   Sun, 19 Apr 2020 01:39:21 +0000
From:   Wei Yang <richard.weiyang@...il.com>
To:     akpm@...ux-foundation.org
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        tim.c.chen@...ux.intel.com, ying.huang@...el.com,
        Wei Yang <richard.weiyang@...il.com>
Subject: [PATCH 4/4] mm/swapfile.c: move new_cluster to check free_clusters directly

Each time it needs jump to new_cluster, it is sure current
percpu_cluster is null.

Move the new_cluster to check free_clusters directly.

Signed-off-by: Wei Yang <richard.weiyang@...il.com>
---
 mm/swapfile.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/swapfile.c b/mm/swapfile.c
index 07b0bc095411..78e92ff14c79 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -603,9 +603,9 @@ static bool scan_swap_map_try_ssd_cluster(struct swap_info_struct *si,
 	struct swap_cluster_info *ci;
 	unsigned long tmp, max;
 
-new_cluster:
 	cluster = this_cpu_ptr(si->percpu_cluster);
 	if (cluster_is_null(&cluster->index)) {
+new_cluster:
 		if (!cluster_list_empty(&si->free_clusters)) {
 			cluster->index = si->free_clusters.head;
 			cluster->next = cluster_next(&cluster->index) *
-- 
2.23.0