io_uring: cache __io_free_req()'d requests

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Don't kfree requests in __io_free_req() but put them back into the
internal request cache. That makes allocations more sustainable and will
be used for refcounting optimisations.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/9f4950fbe7771c8d41799366d0a3a08ac3040236.1628536684.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2021-08-09 20:18:08 +01:00 • committed by Jens Axboe

parent f56165e62f

commit c34b025f2d

1 changed files with 6 additions and 1 deletions

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fs/io_uring.c

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