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![Christoph Hellwig](https://secure.gravatar.com/avatar/5155a9f7b4ebf934b9ed078d70eba285.jpg?s=96&d=mm)
Christoph Hellwig committed 514caf23a70
memremap: replace the altmap_valid field with a PGMAP_ALTMAP_VALID flag Add a flags field to struct dev_pagemap to replace the altmap_valid boolean to be a little more extensible. Also add a pgmap_altmap() helper to find the optional altmap and clean up the code using the altmap using it. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Tested-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>