Christoph Hellwig 5b88a17cfd
block: optimize bvec iteration in bvec_iter_advance ...
There is no need to only iterate in chunks of PAGE_SIZE or less in
bvec_iter_advance, given that the callers pass in the chunk length that
they are operating on - either that already is less than PAGE_SIZE
because they do classic page-based iteration, or it is larger because
the caller operates on multi-page bvecs.
This should help shaving off a few cycles of the I/O hot path.
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de >
Signed-off-by: Christoph Hellwig <hch@lst.de >
Signed-off-by: Jens Axboe <axboe@kernel.dk >
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