[PATCH v4 01/12] ext4: allow DAX writeback for hole punch

2016-09-29 Thread Ross Zwisler
Currently when doing a DAX hole punch with ext4 we fail to do a writeback. This is because the logic around filemap_write_and_wait_range() in ext4_punch_hole() only looks for dirty page cache pages in the radix tree, not for dirty DAX exceptional entries. Signed-off-by: Ross Zwisler

[PATCH v4 01/12] ext4: allow DAX writeback for hole punch

2016-09-29 Thread Ross Zwisler
Currently when doing a DAX hole punch with ext4 we fail to do a writeback. This is because the logic around filemap_write_and_wait_range() in ext4_punch_hole() only looks for dirty page cache pages in the radix tree, not for dirty DAX exceptional entries. Signed-off-by: Ross Zwisler Reviewed-by: