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authorDan Williams <dan.j.williams@intel.com>2018-03-07 15:26:44 -0800
committerDan Williams <dan.j.williams@intel.com>2018-03-30 11:34:55 -0700
commitf44c77630d26ca2c2a60b20c47dd9ce07c4361b3 (patch)
treeec06b086dc96720330ede25f4cd74909f0e8bde1 /Documentation/connector
parent3fe0791c295cfd3cd735de7a32cc0780949c009f (diff)
fs, dax: prepare for dax-specific address_space_operations
In preparation for the dax implementation to start associating dax pages to inodes via page->mapping, we need to provide a 'struct address_space_operations' instance for dax. Define some generic VFS aops helpers for dax. These noop implementations are there in the dax case to prevent the VFS from falling back to operations with page-cache assumptions, dax_writeback_mapping_range() may not be referenced in the FS_DAX=n case. Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Suggested-by: Matthew Wilcox <mawilcox@microsoft.com> Suggested-by: Jan Kara <jack@suse.cz> Suggested-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Suggested-by: Dave Chinner <david@fromorbit.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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