io_uring: better locality for rsrc fields
ring has two types of resource-related fields: used for request submission, and field needed for update/registration. Reshuffle them into these two groups for better locality and readability. The second group is not in the hot path, so it's natural to place them somewhere in the end. Also update an outdated comment. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/05b34795bb4440f4ec4510f08abd5a31830f8ca0.1621201931.git.asml.silence@gmail.comSigned-off-by: Jens Axboe <axboe@kernel.dk>
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