57 static inline void write_seqlock(seqlock_t *sl)  in write_seqlock()  argument
59 	spin_lock(&sl->lock);  in write_seqlock()
60 	++sl->sequence;  in write_seqlock()
64 static inline void write_sequnlock(seqlock_t *sl)   in write_sequnlock()  argument
67 	sl->sequence++;  in write_sequnlock()
68 	spin_unlock(&sl->lock);  in write_sequnlock()
71 static inline int write_tryseqlock(seqlock_t *sl)  in write_tryseqlock()  argument
73 	int ret = spin_trylock(&sl->lock);  in write_tryseqlock()
76 		++sl->sequence;  in write_tryseqlock()
83 static __always_inline unsigned read_seqbegin(const seqlock_t *sl)  in read_seqbegin()  argument
85 	unsigned ret = sl->sequence;  in read_seqbegin()
98 static __always_inline int read_seqretry(const seqlock_t *sl, unsigned iv)  in read_seqretry()  argument
101 	return (iv & 1) | (sl->sequence ^ iv);  in read_seqretry()