The kernel side for rescan, which is needed if you want to enable qgroup tracking on a non-empty volume. The first patch splits btrfs_qgroup_account_ref into readable ans reusable units. The second patch adds the rescan implementation (refer to its commit message for a description of the algorithm). The third patch starts an automatic rescan when qgroups are enabled. It is only separated to potentially help bisecting things in case of a problem.
The required user space patch was sent at 2013-04-05, subject "[PATCH] Btrfs-progs: quota rescan". -- Changes v2->v3: - rebased to btrfs-next - stop rescan worker when quota is disabled - check return value of ulist_add() - initialize worker struct to zero Changes v1->v2: - fix calculation of the "exclusive" field for qgroups in level != 0 - split btrfs_qgroup_account_ref - take into account that mutex_unlock might schedule - fix kzalloc error checking - add some reserved ints to struct btrfs_ioctl_quota_rescan_args - changed modification to unused #define BTRFS_QUOTA_CTL_RESCAN - added missing (unsigned long long) casts for pr_debug - more detailed commit messages Jan Schmidt (3): Btrfs: split btrfs_qgroup_account_ref into four functions Btrfs: rescan for qgroups Btrfs: automatic rescan after "quota enable" command fs/btrfs/ctree.h | 17 +- fs/btrfs/disk-io.c | 5 + fs/btrfs/ioctl.c | 83 ++++++- fs/btrfs/qgroup.c | 575 +++++++++++++++++++++++++++++++++++--------- include/uapi/linux/btrfs.h | 12 +- 5 files changed, 552 insertions(+), 140 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
