This patchset can be fetched from github: https://github.com/adam900710/linux.git wang_dedupe_latest This version is just another update mainly related to ENOSPC fix, rebased to Chris' for-linus-4.9 branch. The main part is the ENOSPC fix, which is first exposed in dedupe development, and thanks to the faster enospc work compression can also trigger the bug. So this time we make the original dedicated ENOSPC fix more generic, to handle both compression and in-ban dedupe. The ENOSPC fix patch is the first 2 patches from Wang, which can be applied independently. And they are already sent to ML for a while. The last patch is the dedicated in-band dedupe ENOSPC fix patch, based on the infrastructure introduced by the first 2 patches. Changelog: v2: Totally reworked to handle multiple backends v3: Fix a stupid but deadly on-disk backend bug Add handle for multiple hash on same bytenr corner case to fix abort trans error Increase dedup rate by enhancing delayed ref handler for both backend. Move dedup_add() to run_delayed_ref() time, to fix abort trans error. Increase dedup block size up limit to 8M. v4: Add dedup prop for disabling dedup for given files/dirs. Merge inmem_search() and ondisk_search() into generic_search() to save some code Fix another delayed_ref related bug. Use the same mutex for both inmem and ondisk backend. Move dedup_add() back to btrfs_finish_ordered_io() to increase dedup rate. v5: Reuse compress routine for much simpler dedup function. Slightly improved performance due to above modification. Fix race between dedup enable/disable Fix for false ENOSPC report v6: Further enable/disable race window fix. Minor format change according to checkpatch. v7: Fix one concurrency bug with balance. Slightly modify return value from -EINVAL to -EOPNOTSUPP for btrfs_dedup_ioctl() to allow progs to distinguish unsupported commands and wrong parameter. Rebased to integration-4.6. v8: Rename 'dedup' to 'dedupe'. Add support to allow dedupe and compression work at the same time. Fix several balance related bugs. Special thanks to Satoru Takeuchi, who exposed most of them. Small dedupe hit case performance improvement. v9: Re-order the patchset to completely separate pure in-memory and any on-disk format change. Fold bug fixes into its original patch. v10: Adding back missing bug fix patch. Reduce on-disk item size. Hide dedupe ioctl under CONFIG_BTRFS_DEBUG. v11: Remove other backend and props support to focus on the framework and in-memory backend. Suggested by David. Better disable and buffered write race protection. Comprehensive fix to dedupe metadata ENOSPC problem. v12: Stateful 'enable' ioctl and new 'reconf' ioctl New FORCE flag for enable ioctl to allow stateless ioctl Precise error report and extendable ioctl structure. v12.1 Rebase to David's for-next-20160704 branch Add co-ordinate patch for subpage and dedupe patchset. v12.2 Rebase to David's for-next-20160715 branch Add co-ordinate patch for other patchset. v13 Rebase to David's for-next-20160906 branch Fix a reserved space leak bug, which only frees quota reserved space but not space_info->byte_may_use. v13.1 Rebase to Chris' for-linux-4.9 branch v14 Use generic ENOSPC fix for both compression and dedupe. Qu Wenruo (4): btrfs: delayed-ref: Add support for increasing data ref under spinlock btrfs: dedupe: Inband in-memory only de-duplication implement btrfs: relocation: Enhance error handling to avoid BUG_ON btrfs: dedupe: Introduce new reconfigure ioctl Wang Xiaoguang (11): btrfs: improve inode's outstanding_extents computation btrfs: fix false enospc for compression btrfs: dedupe: Introduce dedupe framework and its header btrfs: dedupe: Introduce function to initialize dedupe info btrfs: dedupe: Introduce function to add hash into in-memory tree btrfs: dedupe: Introduce function to remove hash from in-memory tree btrfs: dedupe: Introduce function to search for an existing hash btrfs: dedupe: Implement btrfs_dedupe_calc_hash interface btrfs: ordered-extent: Add support for dedupe btrfs: dedupe: Add ioctl for inband dedupelication btrfs: fix false enospc for in-band dedupe fs/btrfs/Makefile | 2 +- fs/btrfs/ctree.h | 40 ++- fs/btrfs/dedupe.c | 820 +++++++++++++++++++++++++++++++++++++++++++ fs/btrfs/dedupe.h | 184 +++++++++- fs/btrfs/delayed-ref.c | 30 +- fs/btrfs/delayed-ref.h | 8 + fs/btrfs/disk-io.c | 4 + fs/btrfs/extent-tree.c | 78 +++- fs/btrfs/extent_io.c | 60 +++- fs/btrfs/extent_io.h | 3 + fs/btrfs/file.c | 31 +- fs/btrfs/free-space-cache.c | 6 +- fs/btrfs/inode-map.c | 5 +- fs/btrfs/inode.c | 508 +++++++++++++++++++++++---- fs/btrfs/ioctl.c | 100 +++++- fs/btrfs/ordered-data.c | 46 ++- fs/btrfs/ordered-data.h | 13 + fs/btrfs/relocation.c | 54 ++- fs/btrfs/sysfs.c | 2 + fs/btrfs/tests/inode-tests.c | 15 +- include/uapi/linux/btrfs.h | 55 +++ 21 files changed, 1919 insertions(+), 145 deletions(-) create mode 100644 fs/btrfs/dedupe.c -- 2.10.1 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
