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io_uring/net: add non-bvec sg chunking callback
Add a sg_from_iter() for when we initiate non-bvec zerocopy sends, which helps us to remove some extra steps from io_sg_from_iter(). The only thing the new function has to do before giving control away to __zerocopy_sg_from_iter() is to check if the skb has managed frags and downgrade them if so. Signed-off-by: Pavel Begunkov <[email protected]> Link: https://lore.kernel.org/r/cda3dea0d36f7931f63a70f350130f085ac3f3dd.1662639236.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <[email protected]>
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