linux-kernel - [PATCH -next] mm/gup.c: Fix the comment of return value for populate_vma_page

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Message-ID: <20200720034303.29920-1-tangyizhou@huawei.com>
Date:   Mon, 20 Jul 2020 11:43:03 +0800
From:   Tang Yizhou <tangyizhou@...wei.com>
To:     <linux-mm@...ck.org>
CC:     <linux-next@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <akpm@...ux-foundation.org>
Subject: [PATCH -next] mm/gup.c: Fix the comment of return value for populate_vma_page_range()

The return value of populate_vma_page_range() is consistent with
__get_user_pages(), and so is the function comment of return value.

Signed-off-by: Tang Yizhou <tangyizhou@...wei.com>
---
 mm/gup.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mm/gup.c b/mm/gup.c
index 2cc5eba44362..a55f1ec712e9 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1386,7 +1386,8 @@ static __always_inline long __get_user_pages_locked(struct mm_struct *mm,
  *
  * This takes care of mlocking the pages too if VM_LOCKED is set.
  *
- * return 0 on success, negative error code on error.
+ * Return either number of pages pinned in the vma, or a negative error
+ * code on error.
  *
  * vma->vm_mm->mmap_lock must be held.
  *
-- 
2.17.1