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Ring memory is released by umapping {cq,sq}->khead, which assumes that
p->{cq,sq}_off.head will always be 0.
Add another field to for the mmaped region and use that instead of
->khead when umapping.
Signed-off-by: Kornilios Kourtis <kkourt@kkourt.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Enter kernel only if SQ thread is off or wakeup is needed.
Signed-off-by: Roman Penyaev <rpenyaev@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Signed-off-by: Roman Penyaev <rpenyaev@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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If the ring setup fails, close the fd before returning failure.
Reported-by: Kornilios Kourtis <kkourt@kkourt.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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We really should use a ';' to terminate the line. This is just a
cosmetic issue, no functional changes.
Signed-off-by: Weiping Zhang <zhangweiping@didiglobal.com>
Modified wording
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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io_uring_queue_init does not allow the caller to specify sq_thread_cpu
or sq_thread_idle. Users that want to specify those parameters need to
call io_uring_setup(2) themselves. Add a helper so that they don't also
have to hand-craft the code to map the submission and completion queues,
and setup the sqe ring. This allows those applications to still make
use of io_uring_submit and get/wait_completion.
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Let's have the various helpers be in usefully named functions, no
need to bundle them all into the same one.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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