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Subject[PATCH 3/5] mm/vmscan: remove unneeded return value of kswapd_run()
Date
The return value of kswapd_run() is unused now. Clean it up.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
include/linux/swap.h | 2 +-
mm/vmscan.c | 7 ++-----
2 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/include/linux/swap.h b/include/linux/swap.h
index 6f5a43251593..717e6e500929 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -408,7 +408,7 @@ static inline bool node_reclaim_enabled(void)

extern void check_move_unevictable_pages(struct pagevec *pvec);

-extern int kswapd_run(int nid);
+extern void kswapd_run(int nid);
extern void kswapd_stop(int nid);

#ifdef CONFIG_SWAP
diff --git a/mm/vmscan.c b/mm/vmscan.c
index fbe53e60b248..c580bef6b885 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4284,23 +4284,20 @@ unsigned long shrink_all_memory(unsigned long nr_to_reclaim)
* This kswapd start function will be called by init and node-hot-add.
* On node-hot-add, kswapd will moved to proper cpus if cpus are hot-added.
*/
-int kswapd_run(int nid)
+void kswapd_run(int nid)
{
pg_data_t *pgdat = NODE_DATA(nid);
- int ret = 0;

if (pgdat->kswapd)
- return 0;
+ return;

pgdat->kswapd = kthread_run(kswapd, pgdat, "kswapd%d", nid);
if (IS_ERR(pgdat->kswapd)) {
/* failure at boot is fatal */
BUG_ON(system_state < SYSTEM_RUNNING);
pr_err("Failed to start kswapd on node %d\n", nid);
- ret = PTR_ERR(pgdat->kswapd);
pgdat->kswapd = NULL;
}
- return ret;
}

/*
--
2.23.0
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