Commit 0e24465d authored by Huang Shijie's avatar Huang Shijie Committed by Linus Torvalds
Browse files

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: default avatarHuang Shijie <sjhuang@iluvatar.ai>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 7b4693e6

lib/genalloc.c

+2 −1
Original line number Diff line number Diff line
@@ -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;