BLK_STOP_QUEUE(9)                         Block Devices                         BLK_STOP_QUEUE(9)



NAME
       blk_stop_queue - stop a queue

SYNOPSIS
       void blk_stop_queue(struct request_queue * q);

ARGUMENTS
       q
           The struct request_queue in question

DESCRIPTION
       The Linux block layer assumes that a block driver will consume all entries on the request
       queue when the request_fn strategy is called. Often this will not happen, because of
       hardware limitations (queue depth settings). If a device driver gets a 'queue full'
       response, or if it simply chooses not to queue more I/O at one point, it can call this
       function to prevent the request_fn from being called until the driver has signalled it's
       ready to go again. This happens by calling blk_start_queue to restart queue operations.
       Queue lock must be held.

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