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authorXue jiufei <xuejiufei@huawei.com>2014-06-24 00:22:08 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-24 03:47:45 +0400
commitb253bfd87866a38e11baf9b88c9d54c534cd70cd (patch)
tree6fcea25a60fc4a9f1e622f528f64e00ae0e312d6 /fs/nfs_common
parent27bf6305cf85cb474295c300c99cc3d10d68f50a (diff)
downloadlinux-b253bfd87866a38e11baf9b88c9d54c534cd70cd.tar.xz
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/nfs_common')
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