On Sun, Sep 01, 2019 at 03:08:21PM -0500, Goldwyn Rodrigues wrote: > This is an effort to use iomap for btrfs. This would keep most > responsibility of page handling during writes in iomap code, hence > code reduction. For CoW support, changes are needed in iomap code > to make sure we perform a copy before the write. > This is in line with the discussion we had during adding dax support in > btrfs. This looks pretty good modulo a few comments. Can you please convert the XFS code to use your two iomaps for COW approach as well to validate it? Also the iomap_file_dirty helper would really benefit from using the two iomaps, any chance you could look into improving it to use your new infrastructure?
