fsdax: shift partition offset handling into the file systems
Remove the last user of ->bdev in dax.c by requiring the file system to pass in an address that already includes the DAX offset. As part of the only set ->bdev or ->daxdev when actually required in the ->iomap_begin methods. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com> [erofs] Reviewed-by: Darrick J. Wong <djwong@kernel.org> Link: https://lore.kernel.org/r/20211129102203.2243509-27-hch@lst.de Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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