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Btrfs: mark delayed refs as for cow

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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>
This commit is contained in:
Arne Jansen 2011-09-12 15:26:38 +02:00 • committed by Jan Schmidt
parent c7d22a3c3c
commit 66d7e7f09f
12 changed files with 155 additions and 114 deletions
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2
fs/btrfs/tree-log.c
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@ -589,7 +589,7 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans,
ret = btrfs_inc_extent_ref(trans, root,
ins.objectid, ins.offset,
0, root->root_key.objectid,
key->objectid, offset);
key->objectid, offset, 0);
BUG_ON(ret);
} else {
/*