linux-kernel - [PATCH 6/7] mm/khugepaged: remove unneeded return value of khugepaged_add_pte_mapped

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Date:   Sat, 11 Jun 2022 16:47:30 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <aarcange@...hat.com>, <willy@...radead.org>, <vbabka@...e.cz>,
        <dhowells@...hat.com>, <neilb@...e.de>, <apopple@...dia.com>,
        <david@...hat.com>, <surenb@...gle.com>, <peterx@...hat.com>,
        <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH 6/7] mm/khugepaged: remove unneeded return value of khugepaged_add_pte_mapped_thp()

The return value of khugepaged_add_pte_mapped_thp() is always 0 and also
ignored. Remove it to clean up the code.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/khugepaged.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 142e26e4bdbf..ee0a719c8be9 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -1372,7 +1372,7 @@ static void collect_mm_slot(struct mm_slot *mm_slot)
  * Notify khugepaged that given addr of the mm is pte-mapped THP. Then
  * khugepaged should try to collapse the page table.
  */
-static int khugepaged_add_pte_mapped_thp(struct mm_struct *mm,
+static void khugepaged_add_pte_mapped_thp(struct mm_struct *mm,
 					 unsigned long addr)
 {
 	struct mm_slot *mm_slot;
@@ -1384,7 +1384,6 @@ static int khugepaged_add_pte_mapped_thp(struct mm_struct *mm,
 	if (likely(mm_slot && mm_slot->nr_pte_mapped_thp < MAX_PTE_MAPPED_THP))
 		mm_slot->pte_mapped_thp[mm_slot->nr_pte_mapped_thp++] = addr;
 	spin_unlock(&khugepaged_mm_lock);
-	return 0;
 }
 
 static void collapse_and_free_pmd(struct mm_struct *mm, struct vm_area_struct *vma,
-- 
2.23.0