Hi all, This patch set goes along with the fourth revision of an RFC adding to XFS kernel support for tracking reverse-mappings of physical blocks to file and metadata; and support for mapping multiple file logical blocks to the same physical block, more commonly known as reflinking. The first four patches are taken verbatim from Anna Schumaker's patches adding a physical copy call to the kernel. The next two patches are from Christoph Hellwig, and hoist the clone and clone_range ioctls into the VFS. These patches are a bit old at this point; they're in here solely to demonstrate how this (long) patchset diverges from upstream. The third patch fixes some bugs in the first four patches, and the fourth patch hoists the extent_same ioctl into the VFS as the dedupe ioctl. The patch set is based on the current (4.4-rc5) upstream kernel. If you're going to start using this mess, you probably ought to just pull from my github trees for kernel[1], xfsprogs[2], and xfstests[3]. See also the xfs-docs[4] and manpage[5] updates. 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/for-dave [2] https://github.com/djwong/xfsprogs/tree/for-dave [3] https://github.com/djwong/xfstests/tree/for-dave [4] https://github.com/djwong/xfs-documentation/tree/for-dave [5] https://github.com/djwong/man-pages/commits/for-mtk -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
