diff options
| author | Xue jiufei <xuejiufei@huawei.com> | 2014-06-23 13:22:08 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-23 16:47:45 -0700 |
| commit | b253bfd87866a38e11baf9b88c9d54c534cd70cd (patch) | |
| tree | 6fcea25a60fc4a9f1e622f528f64e00ae0e312d6 /fs/ocfs2/refcounttree.c | |
| parent | 27bf6305cf85cb474295c300c99cc3d10d68f50a (diff) | |
ocfs2: revert "ocfs2: fix NULL pointer dereference when dismount and ocfs2rec simultaneously"
75f82eaa502c ("ocfs2: fix NULL pointer dereference when dismount and
ocfs2rec simultaneously") may cause umount hang while shutting down
truncate log.
The situation is as followes:
ocfs2_dismout_volume
-> ocfs2_recovery_exit
-> free osb->recovery_map
-> ocfs2_truncate_shutdown
-> lock global bitmap inode
-> ocfs2_wait_for_recovery
-> check whether osb->recovery_map->rm_used is zero
Because osb->recovery_map is already freed, rm_used can be any other
values, so it may yield umount hang.
Signed-off-by: joyce.xue <xuejiufei@huawei.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2/refcounttree.c')
0 files changed, 0 insertions, 0 deletions