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Use atomic_clear_rel_long() to implement clear_bit_unlock() in the LinuxKPI

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after r363842.

Suggested by:	alc@
MFC after:	1 week
Sponsored by:	Mellanox Technologies
This commit is contained in:
Hans Petter Selasky 2020-08-11 12:41:40 +00:00
parent 6ae240797f
commit 74d3a63559
1 changed files with 3 additions and 7 deletions
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10
sys/compat/linuxkpi/common/include/linux/bitops.h
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@ -272,16 +272,12 @@ find_next_zero_bit(const unsigned long *addr, unsigned long size,
#define clear_bit(i, a) \
atomic_clear_long(&((volatile unsigned long *)(a))[BIT_WORD(i)], BIT_MASK(i))
#define clear_bit_unlock(i, a) \
atomic_clear_rel_long(&((volatile unsigned long *)(a))[BIT_WORD(i)], BIT_MASK(i))
#define test_bit(i, a) \
!!(READ_ONCE(((volatile const unsigned long *)(a))[BIT_WORD(i)]) & BIT_MASK(i))
static inline void
clear_bit_unlock(long bit, volatile unsigned long *var)
{
clear_bit(bit, var);
wmb();
}
static inline int
test_and_clear_bit(long bit, volatile unsigned long *var)
{