linux-kernel - [PATCH] mm: compaction: mark kcompactd_run() and kcompactd_stop() _

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Date:   Sat, 10 Jun 2023 11:46:15 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH] mm: compaction: mark kcompactd_run() and kcompactd_stop() __meminit

Add __meminit to kcompactd_run() and kcompactd_stop() to ensure they're
default to __init when memory hotplug is not enabled.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 include/linux/compaction.h | 4 ++--
 mm/compaction.c            | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/linux/compaction.h b/include/linux/compaction.h
index 57b16e69c19a..e94776496049 100644
--- a/include/linux/compaction.h
+++ b/include/linux/compaction.h
@@ -98,8 +98,8 @@ extern void compaction_defer_reset(struct zone *zone, int order,
 bool compaction_zonelist_suitable(struct alloc_context *ac, int order,
 					int alloc_flags);
 
-extern void kcompactd_run(int nid);
-extern void kcompactd_stop(int nid);
+extern void __meminit kcompactd_run(int nid);
+extern void __meminit kcompactd_stop(int nid);
 extern void wakeup_kcompactd(pg_data_t *pgdat, int order, int highest_zoneidx);
 
 #else
diff --git a/mm/compaction.c b/mm/compaction.c
index 3398ef3a55fe..8859cc91062f 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -3086,7 +3086,7 @@ static int kcompactd(void *p)
  * This kcompactd start function will be called by init and node-hot-add.
  * On node-hot-add, kcompactd will moved to proper cpus if cpus are hot-added.
  */
-void kcompactd_run(int nid)
+void __meminit kcompactd_run(int nid)
 {
 	pg_data_t *pgdat = NODE_DATA(nid);
 
@@ -3104,7 +3104,7 @@ void kcompactd_run(int nid)
  * Called by memory hotplug when all memory in a node is offlined. Caller must
  * be holding mem_hotplug_begin/done().
  */
-void kcompactd_stop(int nid)
+void __meminit kcompactd_stop(int nid)
 {
 	struct task_struct *kcompactd = NODE_DATA(nid)->kcompactd;
 
-- 
2.27.0