io_uring: enable req cache for IRQ driven IO

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This is the last class of requests that cannot utilize the req alloc
cache. Add a per-ctx req cache that is protected by the completion_lock,
and refill our submit side cache when it gets over our batch count.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Jens Axboe 2021-02-09 19:53:37 -07:00

parent ed670c3f90

commit c7dae4ba46

1 changed files with 51 additions and 20 deletions

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fs/io_uring.c

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