io_uring: return iovec from __io_import_iovec

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We pass iovec** into __io_import_iovec(), which should keep it,
initialise and modify accordingly. It's expensive, return it directly
from __io_import_iovec encoding errors with ERR_PTR if needed.

io_import_iovec keeps the old interface, but it's inline and so
everything is optimised nicely.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/6230e9769982f03a8f86fa58df24666088c44d3e.1634314022.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2021-10-15 17:09:14 +01:00 • committed by Jens Axboe

parent d1d681b084

commit caa8fe6e86

1 changed files with 23 additions and 22 deletions

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fs/io_uring.c

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