tree bbf7df3933ed47aa202d60d835864543d25df82d
parent c7d22a3c3cdb73d8a0151e2ccc8cf4a48c48310b
author Arne Jansen <sensille@gmx.net> 1315833998 +0200
committer Jan Schmidt <list.btrfs@jan-o-sch.net> 1324567347 +0100

Btrfs: mark delayed refs as for cow

Add a for_cow parameter to add_delayed_*_ref and pass the appropriate value
from every call site. The for_cow parameter will later on be used to
determine if a ref will change anything with respect to qgroups.

Delayed refs coming from relocation are always counted as for_cow, as they
don't change subvol quota.

Also pass in the fs_info for later use.

btrfs_find_all_roots() will use this as an optimization, as changes that are
for_cow will not change anything with respect to which root points to a
certain leaf. Thus, we don't need to add the current sequence number to
those delayed refs.

Signed-off-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>