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lift the calls of ep_send_events_proc() into the callers

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... and kill ep_scan_ready_list()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2020-08-31 13:19:53 -04:00
parent 1ec09974d8
commit 443f1a0422
1 changed files with 5 additions and 28 deletions
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33
fs/eventpoll.c
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@ -636,33 +636,6 @@ static void ep_done_scan(struct eventpoll *ep,
mutex_unlock(&ep->mtx);
}
/**
* ep_scan_ready_list - Scans the ready list in a way that makes possible for
* the scan code, to call f_op->poll(). Also allows for
* O(NumReady) performance.
*
* @ep: Pointer to the epoll private data structure.
* @sproc: Pointer to the scan callback.
* @priv: Private opaque data passed to the @sproc callback.
* @depth: The current depth of recursive f_op->poll calls.
* @ep_locked: caller already holds ep->mtx
*
* Returns: The same integer error code returned by the @sproc callback.
*/
static __poll_t ep_scan_ready_list(struct eventpoll *ep,
__poll_t (*sproc)(struct eventpoll *,
struct list_head *, void *),
void *priv, int depth, bool ep_locked)
{
__poll_t res;
LIST_HEAD(txlist);
ep_start_scan(ep, depth, ep_locked, &txlist);
res = (*sproc)(ep, &txlist, priv);
ep_done_scan(ep, depth, ep_locked, &txlist);
return res;
}
static void epi_rcu_free(struct rcu_head *head)
{
struct epitem *epi = container_of(head, struct epitem, rcu);
@ -1685,11 +1658,15 @@ static int ep_send_events(struct eventpoll *ep,
struct epoll_event __user *events, int maxevents)
{
struct ep_send_events_data esed;
LIST_HEAD(txlist);
esed.maxevents = maxevents;
esed.events = events;
ep_scan_ready_list(ep, ep_send_events_proc, &esed, 0, false);
ep_start_scan(ep, 0, false, &txlist);
ep_send_events_proc(ep, &txlist, &esed);
ep_done_scan(ep, 0, false, &txlist);
return esed.res;
}