On Fri, Feb 26, 2021 at 08:20:26AM +0800, Shiyang Ruan wrote: > Punch hole on a reflinked file needs dax_copy_edge() too. Otherwise, > data in not aligned area will be not correct. So, add the srcmap to > dax_iomap_zero() and replace memset() as dax_copy_edge(). > > Signed-off-by: Shiyang Ruan <ruansy.fnst@xxxxxxxxxxx> Looks good, Reviewed-by: Christoph Hellwig <hch@xxxxxx>