Hi all, Now that we've landed support for reflink on the realtime device for cases where the rt extent size is the same as the fs block size, enhance the reflink code further to support cases where the rt extent size is a power-of-two multiple of the fs block size. This enables us to do data block sharing (for example) for much larger allocation units by dirtying pagecache around shared extents and expanding writeback to write back shared extents fully. If you're going to start using this code, I strongly recommend pulling from my git trees, which are linked below. This has been running on the djcloud for months with no problems. Enjoy! Comments and questions are, as always, welcome. --D kernel git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfs-linux.git/log/?h=realtime-reflink-extsize xfsprogs git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfsprogs-dev.git/log/?h=realtime-reflink-extsize fstests git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfstests-dev.git/log/?h=realtime-reflink-extsize --- common/rc | 23 +++++++ common/reflink | 27 ++++++++ tests/generic/145 | 1 tests/generic/147 | 1 tests/generic/261 | 1 tests/generic/262 | 1 tests/generic/303 | 8 ++ tests/generic/331 | 1 tests/generic/353 | 2 - tests/generic/517 | 1 tests/generic/657 | 1 tests/generic/658 | 1 tests/generic/659 | 1 tests/generic/660 | 1 tests/generic/663 | 1 tests/generic/664 | 1 tests/generic/665 | 1 tests/generic/670 | 1 tests/generic/672 | 1 tests/xfs/180 | 1 tests/xfs/182 | 1 tests/xfs/184 | 1 tests/xfs/1919 | 163 ++++++++++++++++++++++++++++++++++++++++++++++++ tests/xfs/1919.out | 84 +++++++++++++++++++++++++ tests/xfs/192 | 1 tests/xfs/1926 | 177 ++++++++++++++++++++++++++++++++++++++++++++++++++++ tests/xfs/1926.out | 2 + tests/xfs/200 | 1 tests/xfs/204 | 1 tests/xfs/208 | 1 tests/xfs/315 | 1 tests/xfs/326 | 6 ++ tests/xfs/420 | 3 + tests/xfs/421 | 3 + tests/xfs/792 | 1 35 files changed, 520 insertions(+), 2 deletions(-) create mode 100755 tests/xfs/1919 create mode 100644 tests/xfs/1919.out create mode 100755 tests/xfs/1926 create mode 100644 tests/xfs/1926.out
