io_uring: add IORING_CQ_EVENTFD_DISABLED to the CQ ring flags

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This new flag should be set/clear from the application to
disable/enable eventfd notifications when a request is completed
and queued to the CQ ring.

Before this patch, notifications were always sent if an eventfd is
registered, so IORING_CQ_EVENTFD_DISABLED is not set during the
initialization.

It will be up to the application to set the flag after initialization
if no notifications are required at the beginning.

Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Stefano Garzarella 2020-05-15 18:38:05 +02:00 • committed by Jens Axboe

parent 0d9b5b3af1

commit 7e55a19cf6

2 changed files with 9 additions and 0 deletions

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2

fs/io_uring.c

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7

include/uapi/linux/io_uring.h

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