Commit message (Collapse) | Author | Age | Files | Lines | |
---|---|---|---|---|---|
* | Btrfs: Add a write ahead tree log to optimize synchronous operations | Chris Mason | 2008-09-25 | 1 | -0/+41 |
File syncs and directory syncs are optimized by copying their items into a special (copy-on-write) log tree. There is one log tree per subvolume and the btrfs super block points to a tree of log tree roots. After a crash, items are copied out of the log tree and back into the subvolume. See tree-log.c for all the details. Signed-off-by: Chris Mason <chris.mason@oracle.com> |