io_uring: keep table of pointers to ubufs

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Instead of keeping a table of ubufs convert them into pointers to ubuf,
so we can atomically read one pointer and be sure that the content of
ubuf won't change.

Because it was already dynamically allocating imu->bvec, throw both
imu and bvec into a single structure so they can be allocated together.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/b96efa4c5febadeccf41d0e849ac099f4c83b0d3.1619356238.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2021-04-25 14:32:23 +01:00 • committed by Jens Axboe

parent c3bdad0271

commit 41edf1a5ec

1 changed files with 19 additions and 16 deletions

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fs/io_uring.c

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