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Anuj Gupta 9cda70f622 io_uring: introduce fixed buffer support for io_uring_cmd
Add IORING_URING_CMD_FIXED flag that is to be used for sending io_uring
command with previously registered buffers. User-space passes the buffer
index in sqe->buf_index, same as done in read/write variants that uses
fixed buffers.

Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Signed-off-by: Kanchan Joshi <joshi.k@samsung.com>
Link: https://lore.kernel.org/r/20220930062749.152261-3-anuj20.g@samsung.com
[axboe: shuffle valid flags check before acting on it]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-09-30 07:50:59 -06:00
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io_uring io_uring: introduce fixed buffer support for io_uring_cmd 2022-09-30 07:50:59 -06:00
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Linux kernel
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There are several guides for kernel developers and users. These guides can
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