tree c461ae44ed5f9fc45573c14c74548f3f50109547
parent aca92ff6f57c000d1b4523e383c8bd6b8269b8b1
author dingdinghua <dingdinghua@nrchpc.ac.cn> 1266269742 -0500
committer Theodore Ts'o <tytso@mit.edu> 1266269742 -0500

jbd2: delay discarding buffers in journal_unmap_buffer

Delay discarding buffers in journal_unmap_buffer until
we know that "add to orphan" operation has definitely been
committed, otherwise the log space of committing transation
may be freed and reused before truncate get committed, updates
may get lost if crash happens.

Signed-off-by: dingdinghua <dingdinghua@nrchpc.ac.cn>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>