BLK_EXECUTE_RQ_NOWAI(9) Block Devices BLK_EXECUTE_RQ_NOWAI(9)NAME
blk_execute_rq_nowait - insert a request into queue for execution
SYNOPSIS
void blk_execute_rq_nowait(struct request_queue * q, struct gendisk * bd_disk, struct request * rq, int at_head, rq_end_io_fn * done);
ARGUMENTS
q
queue to insert the request in
bd_disk
matching gendisk
rq
request to insert
at_head
insert request at head or tail of queue
done
I/O completion handler
DESCRIPTION
Insert a fully prepared request at the back of the I/O scheduler queue for execution. Don't wait for completion.
NOTE
This function will invoke done directly if the queue is dead.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 BLK_EXECUTE_RQ_NOWAI(9)
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mq_close(2) System Calls Manual mq_close(2)NAME
mq_close - close a message queue descriptor
SYNOPSIS DESCRIPTION
The system call removes the association between the message queue descriptor, mqdes, and a message queue. Use of this message queue
descriptor by the process, after a successful return from this and until this descriptor is returned by a subsequent will result in the
failure of message queue system calls, with set to
If the process has a registered notification request with the message queue associated with this mqdes, the registration is canceled and
the queue becomes available for another process to register a notification request.
If the message queue has been unlinked and mqdes is the only existing open descriptor for the queue, the queue is destroyed.
To use this function, link in the realtime library by specifying on the compiler or linker command line.
RETURN VALUE
returns the following values:
Successful completion.
Failure.
is set to indicate the error.
ERRORS
If fails, is set to one of the following values:
mqdes is not a valid message queue descriptor.
is not supported by the implementation.
SEE ALSO mq_open(2), mq_unlink(2), mq_notify(2).
STANDARDS CONFORMANCE mq_close(2)
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