io_uring: fix NULL-mm for linked reqs

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__io_queue_sqe() tries to handle all request of a link,
so it's not enough to grab mm in io_sq_thread_acquire_mm()
based just on the head.

Don't check req->needs_mm and do it always.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>

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Pavel Begunkov 2020-06-25 12:38:13 +03:00 • committed by Jens Axboe

parent f6b6c7d6a9

commit d3cac64c49

1 changed files with 11 additions and 4 deletions

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fs/io_uring.c

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