aboutsummaryrefslogtreecommitdiffstats
path: root/fs/eventpoll.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/eventpoll.c')
-rw-r--r--fs/eventpoll.c17
1 files changed, 10 insertions, 7 deletions
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 42e35a6977c9..87452875eaec 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -260,6 +260,7 @@ struct ep_pqueue {
struct ep_send_events_data {
int maxevents;
struct epoll_event __user *events;
+ int res;
};
/*
@@ -1616,7 +1617,6 @@ static int ep_send_events_proc(struct eventpoll *ep, struct list_head *head,
void *priv)
{
struct ep_send_events_data *esed = priv;
- int eventcnt;
unsigned int revents;
struct epitem *epi;
struct epoll_event __user *uevent;
@@ -1630,8 +1630,8 @@ static int ep_send_events_proc(struct eventpoll *ep, struct list_head *head,
* Items cannot vanish during the loop because ep_scan_ready_list() is
* holding "mtx" during this call.
*/
- for (eventcnt = 0, uevent = esed->events;
- !list_empty(head) && eventcnt < esed->maxevents;) {
+ for (esed->res = 0, uevent = esed->events;
+ !list_empty(head) && esed->res < esed->maxevents;) {
epi = list_first_entry(head, struct epitem, rdllink);
/*
@@ -1665,9 +1665,11 @@ static int ep_send_events_proc(struct eventpoll *ep, struct list_head *head,
__put_user(epi->event.data, &uevent->data)) {
list_add(&epi->rdllink, head);
ep_pm_stay_awake(epi);
- return eventcnt ? eventcnt : -EFAULT;
+ if (!esed->res)
+ esed->res = -EFAULT;
+ return 0;
}
- eventcnt++;
+ esed->res++;
uevent++;
if (epi->event.events & EPOLLONESHOT)
epi->event.events &= EP_PRIVATE_BITS;
@@ -1689,7 +1691,7 @@ static int ep_send_events_proc(struct eventpoll *ep, struct list_head *head,
}
}
- return eventcnt;
+ return 0;
}
static int ep_send_events(struct eventpoll *ep,
@@ -1700,7 +1702,8 @@ static int ep_send_events(struct eventpoll *ep,
esed.maxevents = maxevents;
esed.events = events;
- return ep_scan_ready_list(ep, ep_send_events_proc, &esed, 0, false);
+ ep_scan_ready_list(ep, ep_send_events_proc, &esed, 0, false);
+ return esed.res;
}
static inline struct timespec64 ep_set_mstimeout(long ms)

Privacy Policy