WAIT_ON_BIT_IO(9)                         Driver Basics                         WAIT_ON_BIT_IO(9)



NAME
       wait_on_bit_io - wait for a bit to be cleared

SYNOPSIS
       int wait_on_bit_io(unsigned long * word, int bit, unsigned mode);

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

       bit
           the bit of the word being waited on

       mode
           the task state to sleep in

DESCRIPTION
       Use the standard hashed waitqueue table to wait for a bit to be cleared. This is similar
       to wait_on_bit, but calls io_schedule instead of schedule for the actual waiting.

       Returned value will be zero if the bit was cleared, or non-zero if the process received a
       signal and the mode permitted wakeup on that signal.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                         WAIT_ON_BIT_IO(9)