From 0e24465d3313832e82f8bd9ee2439da1367dd2e5 Mon Sep 17 00:00:00 2001
From: Huang Shijie <sjhuang@iluvatar.ai>
Date: Thu, 25 Feb 2021 17:21:17 -0800
Subject: [PATCH] lib/genalloc.c: change return type to unsigned long for
bitmap_set_ll
Just as bitmap_clear_ll(), change return type to unsigned long
for bitmap_set_ll to avoid the possible overflow in future.
Link: https://lkml.kernel.org/r/20210105031644.2771-1-sjhuang@iluvatar.ai
Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
lib/genalloc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/lib/genalloc.c b/lib/genalloc.c
index dab97bb69df63..5dcf9cdcbc46d 100644
--- a/lib/genalloc.c
+++ b/lib/genalloc.c
@@ -81,7 +81,8 @@ static int clear_bits_ll(unsigned long *addr, unsigned long mask_to_clear)
* users set the same bit, one user will return remain bits, otherwise
* return 0.
*/
-static int bitmap_set_ll(unsigned long *map, unsigned long start, unsigned long nr)
+static unsigned long
+bitmap_set_ll(unsigned long *map, unsigned long start, unsigned long nr)
{
unsigned long *p = map + BIT_WORD(start);
const unsigned long size = start + nr;
--
GitLab