diff options
| author | Nicholas Sielicki <linux@opensource.nslick.com> | 2023-10-18 23:39:04 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-11-08 11:32:40 -0500 |
| commit | 81352a29bc619c5882cbdd23dbdaa83ae9e3baee (patch) | |
| tree | 1c50b0c0189ce344aaa178dfafeef88164fbea85 /include/linux/atomic.h | |
| parent | 974d9bf0001b330995c5bde3b5a16adab8037262 (diff) | |
btree_write_buffer: ensure atomic64_sub_return_release availabilityv1.3.3
prior to this patch, on certain platforms (ie: armv7l), compilation fails due
to atomic64_sub_return_release not being defined here. Ensure that the atomics
header is pulled in, and ensure that it is available in all cases, regardless
of whether ATOMIC64_SPINLOCK is defined.
Signed-off-by: Nicholas Sielicki <linux@opensource.nslick.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'include/linux/atomic.h')
| -rw-r--r-- | include/linux/atomic.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/atomic.h b/include/linux/atomic.h index f1464cf3..2c983cd4 100644 --- a/include/linux/atomic.h +++ b/include/linux/atomic.h @@ -324,6 +324,12 @@ static inline s64 atomic64_cmpxchg_acquire(atomic64_t *v, s64 old, s64 new) return atomic64_cmpxchg(v, old, new); } +static inline s64 atomic64_sub_return_release(s64 i, atomic64_t *v) +{ + smp_mb__before_atomic(); + return atomic64_sub_return(i, v); +} + #endif #endif /* __TOOLS_LINUX_ATOMIC_H */ |