io_wq: add per-wq work handler instead of per work

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io_uring is the only user of io-wq, and now it uses only io-wq callback
for all its requests, namely io_wq_submit_work(). Instead of storing
work->runner callback in each instance of io_wq_work, keep it in io-wq
itself.

pros:
- reduces io_wq_work size
- more robust -- ->func won't be invalidated with mem{cpy,set}(req)
- helps other work

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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This commit is contained in:

Pavel Begunkov 2020-06-08 21:08:20 +03:00 • committed by Jens Axboe

parent d4c81f3852

commit f5fa38c59c

3 changed files with 12 additions and 8 deletions

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10

fs/io-wq.c

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7

fs/io-wq.h

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3

fs/io_uring.c

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