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seqlock: constify seqlock_read_begin

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Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Emilio G. Cota 2018-08-18 00:25:12 -04:00 committed by Paolo Bonzini
parent 410573aa2c
commit c04649eeea
1 changed files with 1 additions and 1 deletions
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2
include/qemu/seqlock.h
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@ -45,7 +45,7 @@ static inline void seqlock_write_end(QemuSeqLock *sl)
atomic_set(&sl->sequence, sl->sequence + 1); atomic_set(&sl->sequence, sl->sequence + 1);
} }
static inline unsigned seqlock_read_begin(QemuSeqLock *sl) static inline unsigned seqlock_read_begin(const QemuSeqLock *sl)
{ {
/* Always fail if a write is in progress. */ /* Always fail if a write is in progress. */
unsigned ret = atomic_read(&sl->sequence); unsigned ret = atomic_read(&sl->sequence);