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six locks: Delete six_lock_pcpu_free_rcu()

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Didn't have any users, and wasn't a good idea to begin with - delete it.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2022-08-27 15:00:59 -04:00
parent 674cfc2624
commit f5178b34b9
2 changed files with 0 additions and 29 deletions
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28
fs/bcachefs/six.c
View File

@ -712,34 +712,6 @@ void six_lock_wakeup_all(struct six_lock *lock)
}
EXPORT_SYMBOL_GPL(six_lock_wakeup_all);
struct free_pcpu_rcu {
struct rcu_head rcu;
void __percpu *p;
};
static void free_pcpu_rcu_fn(struct rcu_head *_rcu)
{
struct free_pcpu_rcu *rcu =
container_of(_rcu, struct free_pcpu_rcu, rcu);
free_percpu(rcu->p);
kfree(rcu);
}
void six_lock_pcpu_free_rcu(struct six_lock *lock)
{
struct free_pcpu_rcu *rcu = kzalloc(sizeof(*rcu), GFP_KERNEL);
if (!rcu)
return;
rcu->p = lock->readers;
lock->readers = NULL;
call_rcu(&rcu->rcu, free_pcpu_rcu_fn);
}
EXPORT_SYMBOL_GPL(six_lock_pcpu_free_rcu);
void six_lock_pcpu_free(struct six_lock *lock)
{
BUG_ON(lock->readers && pcpu_read_count(lock));

1
fs/bcachefs/six.h
View File

@ -201,7 +201,6 @@ void six_lock_increment(struct six_lock *, enum six_lock_type);
void six_lock_wakeup_all(struct six_lock *);
void six_lock_pcpu_free_rcu(struct six_lock *);
void six_lock_pcpu_free(struct six_lock *);
void six_lock_pcpu_alloc(struct six_lock *);