io_uring: defer flushing cached reqs

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Awhile there are requests in the allocation cache -- use them, only if
those ended go for the stashed memory in comp.free_list. As list
manipulation are generally heavy and are not good for caches, flush them
all or as much as can in one go.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
[axboe: return success/failure from io_flush_cached_reqs()]
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2021-02-10 00:03:23 +00:00 • committed by Jens Axboe

parent c5eef2b944

commit e5d1bc0a91

1 changed files with 19 additions and 9 deletions

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fs/io_uring.c

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