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bcachefs: rcu_pending: don't invoke __call_rcu() under lock

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In userspace we don't (yet) have an SRCU implementation, so call_srcu()
recurses.

But we don't want to be invoking it under the lock anyways.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-09-22 01:11:36 -04:00
parent be40edadb0
commit 1ef7af68e3
1 changed files with 2 additions and 0 deletions
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2
fs/bcachefs/rcu_pending.c
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@ -478,7 +478,9 @@ __rcu_pending_enqueue(struct rcu_pending *pending, struct rcu_head *head,
*/
if (!p->cb_armed) {
p->cb_armed = true;
spin_unlock_irqrestore(&p->lock, flags);
__call_rcu(pending->srcu, &p->cb, rcu_pending_rcu_cb);
goto free_node;
} else {
__start_poll_synchronize_rcu(pending->srcu);
}