This is a combination of three things: The first commit fixes a false assumption concerning indirect tree block backrefs. That one should definitely go into 3.5, thanks to Alexander Block for finding and testing it. Commit 2 to 12 provide reliable backref resolving on busy trees. The previous attempts to block certain tree modifications while we're resolving backrefs all ended up in (dead-) locking nightmares. What we now do is we record all the changes we make to fs trees while backref resolving is in progress into a tree modification log. During backref resolving we then merge the current state of the tree with the recorded modifications to get a consistent previous state of the tree. I'd like to see this in 3.5, too. Commit 13 to 24 finally add quota groups. This is Arne Jansen's patch set sent last October [1] rebased on top of the reliable backref resolver. See his cover letter and [2] for background and usage information on qgroups. Would be nice if that went into 3.5 as well. All three stages can be pulled from my git repository, for patch 1 pull: git://git.jan-o-sch.net/btrfs-unstable backref-bugfix For patches 1 to 12 pull: git://git.jan-o-sch.net/btrfs-unstable tree-mod-log-done For patches 1 to 24 pull: git://git.jan-o-sch.net/btrfs-unstable tree-mod-log-quota All these branches are based on the current for-linus branch from Chris' repository. Checked with xfstests (fails 254 273 275, which i claim has nothing to do with this patch set) and hammered on the filesystem with fs_mark while resolving backrefs in a loop. Qgroup functionality was tested with a private test we might turn into an xfstest soon. Test it, break it, report it :-) -Jan Arne Jansen (12): Btrfs: qgroup on-disk format Btrfs: add helper for tree enumeration Btrfs: check the root passed to btrfs_end_transaction Btrfs: added helper to create new trees Btrfs: qgroup state and initialization Btrfs: Test code to change the order of delayed-ref processing Btrfs: qgroup implementation and prototypes Btrfs: quota tree support and startup Btrfs: hooks for qgroup to record delayed refs Btrfs: hooks to reserve qgroup space Btrfs: add qgroup ioctls Btrfs: add qgroup inheritance Jan Schmidt (12): Btrfs: bugfix: ignore the wrong key for indirect tree block backrefs Btrfs: look into the extent during find_all_leafs Btrfs: don't set for_cow parameter for tree block functions Btrfs: move struct seq_list to ctree.h Btrfs: dummy extent buffers for tree mod log Btrfs: add tree mod log to fs_info Btrfs: add tree modification log functions Btrfs: put all modifications into the tree mod log Btrfs: add btrfs_search_old_slot Btrfs: use the tree modification log for backref resolving Btrfs: fs_info variable for join_transaction Btrfs: tree mod log sanity checks in join_transaction fs/btrfs/Makefile | 2 +- fs/btrfs/backref.c | 424 +++++++++++--- fs/btrfs/backref.h | 3 +- fs/btrfs/ctree.c | 927 +++++++++++++++++++++++++++-- fs/btrfs/ctree.h | 231 ++++++++- fs/btrfs/delayed-ref.c | 29 +- fs/btrfs/delayed-ref.h | 5 - fs/btrfs/disk-io.c | 139 ++++- fs/btrfs/disk-io.h | 5 + fs/btrfs/extent-tree.c | 73 +++- fs/btrfs/extent_io.c | 73 +++- fs/btrfs/extent_io.h | 3 + fs/btrfs/ioctl.c | 246 +++++++- fs/btrfs/ioctl.h | 62 ++- fs/btrfs/qgroup.c | 1531 ++++++++++++++++++++++++++++++++++++++++++++++++ fs/btrfs/transaction.c | 83 ++- fs/btrfs/transaction.h | 8 + 17 files changed, 3620 insertions(+), 224 deletions(-) create mode 100644 fs/btrfs/qgroup.c -- 1.7.3.4 -- 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
