eventpoll: support non-blocking do_epoll_ctl() calls

Also make it available outside of epoll, along with the helper that decides if we need to copy the passed in epoll_event.

Jens Axboe committed 6 years ago

Commit 39220e81 parent 58e41a42 files · +42 −13Browse files

Showing the changes to include/linux (1 of 2 files). Show all

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@@ -61,6 +61,15 @@ static inline void eventpoll_release(struct file *file) · 60 unmodified lines
61	eventpoll_release_file(file);	61	eventpoll_release_file(file);
62	}	62	}
63		63
		64	int do_epoll_ctl(int epfd, int op, int fd, struct epoll_event *epds,
		65	bool nonblock);
		66
		67	/* Tells if the epoll_ctl(2) operation needs an event copy from userspace */
		68	static inline int ep_op_has_event(int op)
		69	{
		70	return op != EPOLL_CTL_DEL;
		71	}
		72
64	#else	73	#else
65		74
66	static inline void eventpoll_init_file(struct file *file) {}	75	static inline void eventpoll_init_file(struct file *file) {}