Xue jiufei a9e9acaeb0 ocfs2: fix umount hang while shutting down truncate log ... Revert commit 75f82eaa50 ("ocfs2: fix NULL pointer dereference when dismount and ocfs2rec simultaneously") because it may cause a umount hang while shutting down the truncate log. fix NULL pointer dereference when dismount and ocfs2rec simultaneously 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. To prevent NULL pointer dereference while getting sys_root_inode, we use a osb_tl_disable flag to disable schedule osb_truncate_log_wq after truncate log shutdown. Signed-off-by: joyce.xue <xuejiufei@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-06-04 16:53:54 -07:00
..
cluster	ocfs2: remove NULL assignments on static	2014-06-04 16:53:53 -07:00
dlm	ocfs2/dlm: fix possible convert=sion deadlock	2014-06-04 16:53:54 -07:00
dlmfs	ocfs2: remove versioning information	2014-01-21 16:19:41 -08:00
acl.c	ocfs2: call ocfs2_update_inode_fsync_trans when updating any inode	2014-04-03 16:20:56 -07:00
acl.h	ocfs2: use generic posix ACL infrastructure	2014-01-25 23:58:21 -05:00
alloc.c	ocfs2: fix umount hang while shutting down truncate log	2014-06-04 16:53:54 -07:00
alloc.h
aops.c	ocfs2: improve fsync efficiency and fix deadlock between aio_write and sync_file	2014-04-03 16:20:53 -07:00
aops.h	ocfs2: change ip_unaligned_aio to of type mutex from atomit_t	2014-04-03 16:20:53 -07:00
blockcheck.c
blockcheck.h
buffer_head_io.c	ocfs2: do not put bh when buffer_uptodate failed	2014-04-03 16:20:56 -07:00
buffer_head_io.h
dcache.c	ocfs2: revert iput deferring code in ocfs2_drop_dentry_lock	2014-04-03 16:20:55 -07:00
dcache.h	ocfs2: revert iput deferring code in ocfs2_drop_dentry_lock	2014-04-03 16:20:55 -07:00
dir.c	ocfs2: call ocfs2_update_inode_fsync_trans when updating any inode	2014-04-03 16:20:56 -07:00
dir.h	[readdir] convert ocfs2	2013-06-29 12:57:02 +04:00
dlmglue.c	ocfs2: avoid blocking in ocfs2_mark_lockres_freeing() in downconvert thread	2014-04-03 16:20:55 -07:00
dlmglue.h	ocfs2: avoid blocking in ocfs2_mark_lockres_freeing() in downconvert thread	2014-04-03 16:20:55 -07:00
export.c	fs: encode_fh: return FILEID_INVALID if invalid fid_type	2013-02-26 02:46:10 -05:00
export.h
extent_map.c	ocfs2: fix the end cluster offset of FIEMAP	2013-09-11 15:56:53 -07:00
extent_map.h
file.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-04-12 14:49:50 -07:00
file.h
heartbeat.c
heartbeat.h
inode.c	mm + fs: store shadow entries in page cache	2014-04-03 16:21:01 -07:00
inode.h	ocfs2: remove OCFS2_INODE_SKIP_DELETE flag	2014-04-03 16:20:54 -07:00
ioctl.c	fs/ocfs2/ioctl.c: add static to local functions	2014-06-04 16:53:54 -07:00
ioctl.h
journal.c	ocfs2: limit printk when journal is aborted	2014-06-04 16:53:54 -07:00
journal.h	ocfs2: improve fsync efficiency and fix deadlock between aio_write and sync_file	2014-04-03 16:20:53 -07:00
Kconfig
localalloc.c	ocfs2: free allocated clusters if error occurs after ocfs2_claim_clusters	2014-02-06 13:48:51 -08:00
localalloc.h	ocfs2: free allocated clusters if error occurs after ocfs2_claim_clusters	2014-02-06 13:48:51 -08:00
locks.c	ocfs2: flock: drop cross-node lock when failed locally	2014-04-03 16:20:56 -07:00
locks.h
Makefile	ocfs2: remove versioning information	2014-01-21 16:19:41 -08:00
mmap.c	kill f_vfsmnt	2013-02-26 02:46:10 -05:00
mmap.h
move_extents.c	ocfs2: rollback alloc_dinode counts when ocfs2_block_group_set_bits() failed	2014-04-03 16:20:56 -07:00
move_extents.h
namei.c	ocfs2: call ocfs2_update_inode_fsync_trans when updating any inode	2014-04-03 16:20:56 -07:00
namei.h
ocfs1_fs_compat.h
ocfs2.h	ocfs2: fix umount hang while shutting down truncate log	2014-06-04 16:53:54 -07:00
ocfs2_fs.h
ocfs2_ioctl.h
ocfs2_lockid.h
ocfs2_lockingver.h
ocfs2_trace.h	ocfs2: lighten up allocate transaction	2013-09-11 15:56:28 -07:00
quota.h	ocfs2: implement delayed dropping of last dquot reference	2014-04-03 16:20:54 -07:00
quota_global.c	ocfs2: implement delayed dropping of last dquot reference	2014-04-03 16:20:54 -07:00
quota_local.c	ocfs2: fix quota file corruption	2014-03-04 07:55:48 -08:00
refcounttree.c	ocfs2: remove some redundant casting	2014-06-04 16:53:54 -07:00
refcounttree.h	ocfs2: fix NULL pointer dereference in ocfs2_duplicate_clusters_by_page	2013-08-13 17:57:49 -07:00
reservations.c
reservations.h
resize.c	ocfs2: do not call brelse() if group_bh is not initialized in ocfs2_group_add()	2013-11-13 12:09:01 +09:00
resize.h
slot_map.c
slot_map.h
stack_o2cb.c	ocfs2: pass ocfs2_cluster_connection to ocfs2_this_node	2014-01-21 16:19:41 -08:00
stack_user.c	ocfs2: fix sparse non static symbol warning	2014-01-21 16:19:42 -08:00
stackglue.c	ocfs2: remove NULL assignments on static	2014-06-04 16:53:53 -07:00
stackglue.h	ocfs2: pass ocfs2_cluster_connection to ocfs2_this_node	2014-01-21 16:19:41 -08:00
suballoc.c	ocfs2: iput inode alloc when failed locally	2014-04-03 16:20:57 -07:00
suballoc.h	ocfs2: rollback alloc_dinode counts when ocfs2_block_group_set_bits() failed	2014-04-03 16:20:56 -07:00
super.c	fs/ocfs2/super.c: use OCFS2_MAX_VOL_LABEL_LEN and strlcpy	2014-06-04 16:53:54 -07:00
super.h
symlink.c	ocfs2: Fix oops in ocfs2_fast_symlink_readpage() code path	2013-02-26 02:46:12 -05:00
symlink.h
sysfile.c	ocfs2: avoid system inode ref confusion by adding mutex lock	2014-04-03 16:20:57 -07:00
sysfile.h
uptodate.c	ocfs2: remove NULL assignments on static	2014-06-04 16:53:53 -07:00
uptodate.h
xattr.c	ocfs2: pass "new" parameter to ocfs2_init_xattr_bucket	2014-04-03 16:20:57 -07:00
xattr.h	ocfs2: use generic posix ACL infrastructure	2014-01-25 23:58:21 -05:00