tree 080d4a2a20d8d7e7ea8b36f63150827b970da715
parent 35a30d7ce54e087d8025a725d4e5a2fdee723a9f
author Chris Mason <chris.mason@oracle.com> 1308341649 -0400
committer Chris Mason <chris.mason@oracle.com> 1308343127 -0400

Btrfs: avoid delayed metadata items during commits

Snapshot creation has two phases.  One is the initial snapshot setup,
and the second is done during commit, while nobody is allowed to modify
the root we are snapshotting.

The delayed metadata insertion code can break that rule, it does a
delayed inode update on the inode of the parent of the snapshot,
and delayed directory item insertion.

This makes sure to run the pending delayed operations before we
record the snapshot root, which avoids corruptions.

Signed-off-by: Chris Mason <chris.mason@oracle.com>