diff options
Diffstat (limited to 'qemu/include/qemu/seqlock.h')
| -rw-r--r-- | qemu/include/qemu/seqlock.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/qemu/include/qemu/seqlock.h b/qemu/include/qemu/seqlock.h index 3ff118a1a..70b01fd60 100644 --- a/qemu/include/qemu/seqlock.h +++ b/qemu/include/qemu/seqlock.h @@ -55,18 +55,18 @@ static inline void seqlock_write_unlock(QemuSeqLock *sl) static inline unsigned seqlock_read_begin(QemuSeqLock *sl) { /* Always fail if a write is in progress. */ - unsigned ret = sl->sequence & ~1; + unsigned ret = atomic_read(&sl->sequence); /* Read sequence before reading other fields. */ smp_rmb(); - return ret; + return ret & ~1; } -static int seqlock_read_retry(const QemuSeqLock *sl, unsigned start) +static inline int seqlock_read_retry(const QemuSeqLock *sl, unsigned start) { /* Read other fields before reading final sequence. */ smp_rmb(); - return unlikely(sl->sequence != start); + return unlikely(atomic_read(&sl->sequence) != start); } #endif |