These two patches give a degree of control over balance operations. The first makes it possible to get an idea of how much work remains to do, by tracking the number of block groups (chunks) that need to be moved/rewritten. The second patch allows a running balance operation to be cancelled when the current block group has been moved. Since the last version, I've added some more locking (assigning to a u64 isn't atomic on non-64-bit architectures). I've not added the sysfs bits, as I haven't had a chance to try out Goffredo's sysfs code yet. I've also not implemented liubo's suggestion of tracking the current block group ID (I'll take that discussion up with him separately -- basically it's not a good fit with the "polling" method required by this ioctl). Hugo Mills (2): Balance progress monitoring. Cancel filesystem balance. fs/btrfs/ctree.h | 10 ++++++++ fs/btrfs/disk-io.c | 2 + fs/btrfs/ioctl.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++ fs/btrfs/ioctl.h | 8 ++++++ fs/btrfs/volumes.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++- 5 files changed, 146 insertions(+), 2 deletions(-) -- 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
