tree 71306747041b6e4a5eaccc5028c770fed29b3f87
parent 68b38550ddbea13d296184bf69edff387618b1d3
author Yan Zheng <zheng.yan@oracle.com> 1248784917 -0400
committer Chris Mason <chris.mason@oracle.com> 1248784917 -0400

Btrfs: Fix async caching interaction with unmount

- don't stop the caching thread until btrfs_commit_super return.

- if caching is interrupted by umount, set last to (u64)-1.
  otherwise the un-scanned range of block group will be considered
  as free extent.

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