Files
twx-linux/include/linux
Jens Axboe 0a467d0fdd block: switch to atomic_t for request references
refcount_t is not as expensive as it used to be, but it's still more
expensive than the io_uring method of using atomic_t and just checking
for potential over/underflow.

This borrows that same implementation, which in turn is based on the
mm implementation from Linus.

Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-12-03 14:51:29 -07:00
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