io_uring: improve import_fixed overflow checks

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Replace a hand-coded overflow check with a specialised function. Even
though compilers are smart enough to generate identical binary (i.e.
check carry bit), but it's more foolproof and conveys the intention
better.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/e437dcdc929bacbb6f11a4824ecbbf17225cb82a.1617287883.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2021-04-01 15:43:54 +01:00 • committed by Jens Axboe

parent 0aec38fda2

commit 75769e3f73

1 changed files with 3 additions and 4 deletions

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fs/io_uring.c

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