From 0a36f7f85e69ce248a89634b2d386600bc4c637b Mon Sep 17 00:00:00 2001
From: Tang Yizhou <tangyizhou@huawei.com>
Date: Thu, 6 Aug 2020 23:20:01 -0700
Subject: [PATCH] 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@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: http://lkml.kernel.org/r/20200720034303.29920-1-tangyizhou@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 mm/gup.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mm/gup.c b/mm/gup.c
index 6f47697f8fb0..d8a33dd1430d 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1404,7 +1404,8 @@ retry:
  *
  * 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.
  *