centos man page for wait_on_bit

WAIT_ON_BIT(9)							   Driver Basics						    WAIT_ON_BIT(9)

NAME
       wait_on_bit - wait for a bit to be cleared

SYNOPSIS
       int wait_on_bit(void * word, int bit, int (*action) (void *), unsigned mode);

ARGUMENTS
       word
	   the word being waited on, a kernel virtual address

       bit
	   the bit of the word being waited on

       action
	   the function used to sleep, which may take special actions

       mode
	   the task state to sleep in

DESCRIPTION
       There is a standard hashed waitqueue table for generic use. This is the part of the hashtable's accessor API that waits on a bit. For
       instance, if one were to have waiters on a bitflag, one would call wait_on_bit in threads waiting for the bit to clear. One uses
       wait_on_bit where one is waiting for the bit to clear, but has no intention of setting it.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							    WAIT_ON_BIT(9)