From: Liu Xiang <liuxiang_1999@126.com>
To: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org, liuxiang_1999@126.com
Subject: [PATCH] mm: gup: fix comment of __get_user_pages()
Date: Wed, 23 Oct 2019 21:51:47 +0800 [thread overview]
Message-ID: <1571838707-4994-1-git-send-email-liuxiang_1999@126.com> (raw)
Because nr_pages is unsigned long, it can not be negative.
Signed-off-by: Liu Xiang <liuxiang_1999@126.com>
---
mm/gup.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/mm/gup.c b/mm/gup.c
index 8f236a3..0236954 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -735,10 +735,10 @@ static int check_vma_flags(struct vm_area_struct *vma, unsigned long gup_flags)
* @nonblocking: whether waiting for disk IO or mmap_sem contention
*
* Returns number of pages pinned. This may be fewer than the number
- * requested. If nr_pages is 0 or negative, returns 0. If no pages
- * were pinned, returns -errno. Each page returned must be released
- * with a put_page() call when it is finished with. vmas will only
- * remain valid while mmap_sem is held.
+ * requested. If nr_pages is 0, returns 0. If no pages were pinned,
+ * returns -errno. Each page returned must be released with a
+ * put_page() call when it is finished with. vmas will only remain
+ * valid while mmap_sem is held.
*
* Must be called with mmap_sem held. It may be released. See below.
*
--
1.9.1
next reply other threads:[~2019-10-23 13:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-23 13:51 Liu Xiang [this message]
2019-10-23 14:25 ` [PATCH] mm: gup: fix comment of __get_user_pages() David Hildenbrand
2019-10-23 19:28 ` John Hubbard
2019-10-24 14:21 ` Liu Xiang
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