centos man page for eventfd_ctx_remove_wait_queue

EVENTFD_CTX_REMOVE_W(9) 				  Events based on file descripto				   EVENTFD_CTX_REMOVE_W(9)

NAME
       eventfd_ctx_remove_wait_queue - Read the current counter and removes wait queue.

SYNOPSIS
       int eventfd_ctx_remove_wait_queue(struct eventfd_ctx * ctx, wait_queue_t * wait, __u64 * cnt);

ARGUMENTS
       ctx
	   [in] Pointer to eventfd context.

       wait
	   [in] Wait queue to be removed.

       cnt
	   [out] Pointer to the 64-bit counter value.

DESCRIPTION
       Returns 0 if successful, or the following error codes:

       -EAGAIN : The operation would have blocked.

       This is used to atomically remove a wait queue entry from the eventfd wait queue head, and read/reset the counter value.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   EVENTFD_CTX_REMOVE_W(9)