io_uring: fix zero len do_splice()

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do_splice() doesn't expect len to be 0. Just always return 0 in this
case as splice(2) does.

Fixes: 7d67af2c01 ("io_uring: add splice(2) support")
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2020-05-04 23:00:54 +03:00 • committed by Jens Axboe

parent 63ff822358

commit c96874265c

1 changed files with 7 additions and 4 deletions

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fs/io_uring.c

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