tree 4727c977803093ec5cdf93da4fcab34cc8de8ecf
parent 70922617b0099f420deceb53d5dc7f4fb30d08d0
author Ilya Dryomov <idryomov@gmail.com> 1326744288 +0200
committer Ilya Dryomov <idryomov@gmail.com> 1326744288 +0200

Btrfs: implement online profile changing

Profile changing is done by launching a balance with
BTRFS_BALANCE_CONVERT bits set and target fields of respective
btrfs_balance_args structs initialized.  Profile reducing code in this
case will pick restriper's target profile if it's available instead of
doing a blind reduce.  If target profile is not yet available it goes
back to a plain reduce.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>