d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Use explicit long cast to avoid overflow in bitopts.

Browse Source 
This was causing problems with the buddy allocator inside of
ofed.

Submitted by: odeds
This commit is contained in:
Alfred Perlstein 2013-11-08 18:20:19 +00:00
parent 4ef7374618
commit 58f91ead4b
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
sys/ofed/include/linux/bitops.h
View File

@ -286,14 +286,14 @@ bitmap_empty(unsigned long *addr, int size)
#define NBLONG (NBBY * sizeof(long))
#define set_bit(i, a) \
atomic_set_long(&((volatile long *)(a))[(i)/NBLONG], 1 << (i) % NBLONG)
atomic_set_long(&((volatile long *)(a))[(i)/NBLONG], 1UL << (i) % NBLONG)
#define clear_bit(i, a) \
atomic_clear_long(&((volatile long *)(a))[(i)/NBLONG], 1 << (i) % NBLONG)
atomic_clear_long(&((volatile long *)(a))[(i)/NBLONG], 1UL << (i) % NBLONG)
#define test_bit(i, a) \
!!(atomic_load_acq_long(&((volatile long *)(a))[(i)/NBLONG]) & \
1 << ((i) % NBLONG))
1UL << ((i) % NBLONG))
static inline long
test_and_clear_bit(long bit, long *var)