On 19:49 31/07, Shiyang Ruan wrote: > This patchset aims to take care of this issue to make reflink and dedupe > work correctly in XFS. > > It is based on Goldwyn's patchsets: "v4 Btrfs dax support" and "Btrfs > iomap". I picked up some patches related and made a few fix to make it > basically works fine. > > For dax framework: > 1. adapt to the latest change in iomap. > > For XFS: > 1. report the source address and set IOMAP_COW type for those write > operations that need COW. > 2. update extent list at the end. > 3. add file contents comparison function based on dax framework. > 4. use xfs_break_layouts() to support dax. Shiyang, I think you used the older patches which does not contain the iomap changes which would call iomap_begin() with two iomaps. I have it in the btrfs-iomap branch and plan to update it today. It is built on v5.3-rcX, so it should contain the changes which moves the iomap code to the different directory. I will build the dax patches on top of that. However, we are making a big dependency chain here :( -- Goldwyn > > > Goldwyn Rodrigues (3): > dax: replace mmap entry in case of CoW > fs: dedup file range to use a compare function > dax: memcpy before zeroing range > > Shiyang Ruan (4): > dax: Introduce dax_copy_edges() for COW. > dax: copy data before write. > xfs: Add COW handle for fsdax. > xfs: Add dedupe support for fsdax. > > fs/btrfs/ioctl.c | 11 ++- > fs/dax.c | 203 ++++++++++++++++++++++++++++++++++++++---- > fs/iomap.c | 9 +- > fs/ocfs2/file.c | 2 +- > fs/read_write.c | 11 +-- > fs/xfs/xfs_iomap.c | 42 +++++---- > fs/xfs/xfs_reflink.c | 84 +++++++++-------- > include/linux/dax.h | 15 ++-- > include/linux/fs.h | 8 +- > include/linux/iomap.h | 6 ++ > 10 files changed, 294 insertions(+), 97 deletions(-) > > -- > 2.17.0 > > > -- Goldwyn
