tree 664ff2a92a2de3ba96be5a49ac36531d933ee5eb
parent 20b297d620cd1bb94127942bbb3702fb7b1030b2
author Jan Schmidt <list.btrfs@jan-o-sch.net> 1338304014 +0200
committer Jan Schmidt <list.btrfs@jan-o-sch.net> 1338394701 +0200

Btrfs: use delayed ref sequence numbers for all fs-tree updates

The sequence number for delayed refs is needed to postpone certain delayed
refs for a very short period while walking backrefs. Before the tree
modification log, we thought we'd only have to hold back those references
that don't have a counter operation.

While now we've the tree mod log, we're rewinding fs tree blocks to a
defined consistent state. We cannot know in advance for which tree block
we'll be doing rewind operations later. Therefore, we must postpone all the
delayed refs for fs-tree blocks, even those having a counter operation.

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