Hi all, This is the eighth revision of a patchset that adds to XFS kernel support for mapping multiple file logical blocks to the same physical block (reflink/deduplication), implements the beginnings of online metadata scrubbing and preening, and implements reverse mapping for the realtime device. There shouldn't be any incompatible on-disk format changes, pending a thorough review of the patches within. The patches in this series implement generic changes that will be necessary for XFS' implementation of reflink and dedupe. There are some small fixes for the new VFS hoists of the dedupe ioctl, as well as a patch adding the reflink and CoW extent size hints to the file attr ioctl that ext4 and XFS now share. The second half of the series are amendments to the iomap infrastructure that Christoph Hellwig refactored in 4.8. These changes make it easier to implement CoW and to pass along various flags through struct iomap. If you're going to start using this mess, you probably ought to just pull from my github trees for kernel[1], xfsprogs[2], xfstests[3], xfs-docs[4], and man-pages[5]. The kernel patches in the git trees should apply to 4.8-rc3; xfsprogs patches to for-next; and xfstest to master. The patches have been xfstested with x64, ppc64, and armhf; all tests in the clone and rmap groups pass. AFAICT they don't cause any new failures for the 'auto' group. This is an extraordinary way to eat your data. Enjoy! Comments and questions are, as always, welcome. --D [1] https://github.com/djwong/linux/tree/djwong-devel [2] https://github.com/djwong/xfsprogs/tree/djwong-devel [3] https://github.com/djwong/xfstests/tree/djwong-devel [4] https://github.com/djwong/xfs-documentation/tree/djwong-devel [5] https://github.com/djwong/man-pages/tree/djwong-devel -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
