131 struct seqlock {  struct
136 typedef struct seqlock seqlock_t;  argument
139 seqlock_init(struct seqlock *seqlock)  in seqlock_init()  argument
142 	mutex_init(&seqlock->sql_lock, MUTEX_DEFAULT, IPL_VM);  in seqlock_init()
143 	seqcount_init(&seqlock->sql_count);  in seqlock_init()
147 seqlock_destroy(struct seqlock *seqlock)  in seqlock_destroy()  argument
150 	seqcount_destroy(&seqlock->sql_count);  in seqlock_destroy()
151 	mutex_destroy(&seqlock->sql_lock);  in seqlock_destroy()
155 write_seqlock(struct seqlock *seqlock)  in write_seqlock()  argument
158 	mutex_spin_enter(&seqlock->sql_lock);  in write_seqlock()
159 	write_seqcount_begin(&seqlock->sql_count);  in write_seqlock()
163 write_sequnlock(struct seqlock *seqlock)  in write_sequnlock()  argument
166 	write_seqcount_end(&seqlock->sql_count);  in write_sequnlock()
167 	mutex_spin_exit(&seqlock->sql_lock);  in write_sequnlock()
181 read_seqbegin(const struct seqlock *seqlock)  in read_seqbegin()  argument
184 	return read_seqcount_begin(&seqlock->sql_count);  in read_seqbegin()
188 read_seqretry(const struct seqlock *seqlock, unsigned gen)  in read_seqretry()  argument
191 	return read_seqcount_retry(&seqlock->sql_count, gen);  in read_seqretry()