diff options
Diffstat (limited to 'fs/eventpoll.c')
| -rw-r--r-- | fs/eventpoll.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/fs/eventpoll.c b/fs/eventpoll.c index 4903104137c6..680f4ada53d4 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -1356,26 +1356,16 @@ static int ep_insert(struct eventpoll *ep, const struct epoll_event *event, user_watches = atomic_long_read(&ep->user->epoll_watches); if (unlikely(user_watches >= max_user_watches)) return -ENOSPC; - if (!(epi = kmem_cache_alloc(epi_cache, GFP_KERNEL))) + if (!(epi = kmem_cache_zalloc(epi_cache, GFP_KERNEL))) return -ENOMEM; /* Item initialization follow here ... */ INIT_LIST_HEAD(&epi->rdllink); INIT_LIST_HEAD(&epi->fllink); - epi->pwqlist = NULL; epi->ep = ep; ep_set_ffd(&epi->ffd, tfile, fd); epi->event = *event; epi->next = EP_UNACTIVE_PTR; - if (epi->event.events & EPOLLWAKEUP) { - error = ep_create_wakeup_source(epi); - if (error) { - kmem_cache_free(epi_cache, epi); - return error; - } - } else { - RCU_INIT_POINTER(epi->ws, NULL); - } atomic_long_inc(&ep->user->epoll_watches); @@ -1400,6 +1390,14 @@ static int ep_insert(struct eventpoll *ep, const struct epoll_event *event, return -EINVAL; } + if (epi->event.events & EPOLLWAKEUP) { + error = ep_create_wakeup_source(epi); + if (error) { + ep_remove(ep, epi); + return error; + } + } + /* Initialize the poll table using the queue callback */ epq.epi = epi; init_poll_funcptr(&epq.pt, ep_ptable_queue_proc); |