Unverified Commit f005bf18 authored by Oleg Nesterov's avatar Oleg Nesterov Committed by Christian Brauner
Browse files

poll: kill poll_does_not_wait() 



It no longer has users.

Signed-off-by: default avatarOleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20250107162743.GA18947@redhat.com


Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent b2849867

include/linux/poll.h

+3 −13
Original line number Diff line number Diff line
@@ -31,8 +31,8 @@ struct poll_table_struct; 
typedef void (*poll_queue_proc)(struct file *, wait_queue_head_t *, struct poll_table_struct *);



/*

 * Do not touch the structure directly, use the access functions

 * poll_does_not_wait() and poll_requested_events() instead.

 * Do not touch the structure directly, use the access function

 * poll_requested_events() instead.

 */

typedef struct poll_table_struct {

	poll_queue_proc _qproc;
@@ -53,16 +53,6 @@ static inline void poll_wait(struct file * filp, wait_queue_head_t * wait_addres 
	}

}



/*

 * Return true if it is guaranteed that poll will not wait. This is the case

 * if the poll() of another file descriptor in the set got an event, so there

 * is no need for waiting.

 */

static inline bool poll_does_not_wait(const poll_table *p)

{

	return p == NULL || p->_qproc == NULL;

}



/*

 * Return the set of events that the application wants to poll for.

 * This is useful for drivers that need to know whether a DMA transfer has