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| author | Jan Schmidt <list.btrfs@jan-o-sch.net> | 2012-05-29 17:06:54 +0200 |
|---|---|---|
| committer | Jan Schmidt <list.btrfs@jan-o-sch.net> | 2012-05-30 18:18:21 +0200 |
| commit | 95a06077f7edbd00d32612562be4d857a5b7df54 (patch) | |
| tree | 664ff2a92a2de3ba96be5a49ac36531d933ee5eb /fs/btrfs/ulist.h | |
| parent | 20b297d620cd1bb94127942bbb3702fb7b1030b2 (diff) | |
| download | linux-95a06077f7edbd00d32612562be4d857a5b7df54.tar.gz linux-95a06077f7edbd00d32612562be4d857a5b7df54.tar.bz2 linux-95a06077f7edbd00d32612562be4d857a5b7df54.zip | |
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>
Diffstat (limited to 'fs/btrfs/ulist.h')
0 files changed, 0 insertions, 0 deletions