block: save page offset gaps in cloned bio - #1150
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The cloned bio needs to inherit the accumulated gaps between vectors so that we can know if this bio can subscribe to the iova coalescing optimization. When cloning for a split, the gap only applies to the front bio since that's as far as has been processed. The remaining bio can reset its gaps to 0 since it advanced past the checked vectors, and will start its accounting from there on the next split check. Fixes: 2f6b256 ("block: accumulate memory segment gaps per bio") Reported-by: Eric Auger <eauger@redhat.com> Tested-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Keith Busch <kbusch@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
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Pull request for series with
subject: block: save page offset gaps in cloned bio
version: 1
url: https://patchwork.kernel.org/project/linux-block/list/?series=1147324