Jan Kara 7f5aa21508 jbd2: Avoid possible NULL dereference in jbd2_journal_begin_ordered_truncate() ... If we race with commit code setting i_transaction to NULL, we could possibly dereference it. Proper locking requires the journal pointer (to access journal->j_list_lock), which we don't have. So we have to change the prototype of the function so that filesystem passes us the journal pointer. Also add a more detailed comment about why the function jbd2_journal_begin_ordered_truncate() does what it does and how it should be used. Thanks to Dan Carpenter <error27@gmail.com> for pointing to the suspitious code. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Acked-by: Joel Becker <joel.becker@oracle.com> CC: linux-ext4@vger.kernel.org CC: ocfs2-devel@oss.oracle.com CC: mfasheh@suse.de CC: Dan Carpenter <error27@gmail.com>		2009-02-10 11:15:34 -05:00
..
cluster	trivial: fix then -> than typos in comments and documentation	2009-01-06 11:28:06 +01:00
dlm	Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2	2009-01-05 18:32:43 -08:00
acl.c
acl.h
alloc.c	ocfs2: add quota call to ocfs2_remove_btree_range()	2009-02-02 14:20:20 -08:00
alloc.h	ocfs2: Create ocfs2_xattr_value_buf.	2009-01-05 08:40:32 -08:00
aops.c	ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.	2009-01-05 08:40:32 -08:00
aops.h
blockcheck.c	ocfs2: One more hamming code optimization.	2009-01-05 08:40:35 -08:00
blockcheck.h	ocfs2: Add the underlying blockcheck code.	2009-01-05 08:40:31 -08:00
buffer_head_io.c	ocfs2: Use BH_JBDPrivateStart instead of BH_Unshadow	2009-01-05 08:40:24 -08:00
buffer_head_io.h	ocfs2: Validate metadata only when it's read from disk.	2009-01-05 08:36:53 -08:00
dcache.c	ocfs2: Push out dropping of dentry lock to ocfs2_wq	2009-02-02 14:20:16 -08:00
dcache.h	ocfs2: Push out dropping of dentry lock to ocfs2_wq	2009-02-02 14:20:16 -08:00
dir.c	ocfs2: Checksum and ECC for directory blocks.	2009-01-05 08:40:34 -08:00
dir.h	ocfs2: Checksum and ECC for directory blocks.	2009-01-05 08:40:34 -08:00
dlmglue.c	ocfs2: Wakeup the downconvert thread after a successful cancel convert	2009-02-02 14:20:19 -08:00
dlmglue.h	ocfs2: Implementation of local and global quota file handling	2009-01-05 08:40:23 -08:00
export.c
export.h
extent_map.c	ocfs2: Wrap virtual block reads in ocfs2_read_virt_blocks()	2009-01-05 08:36:54 -08:00
extent_map.h	ocfs2: Wrap virtual block reads in ocfs2_read_virt_blocks()	2009-01-05 08:36:54 -08:00
file.c	remove lots of double-semicolons	2009-01-08 08:31:14 -08:00
file.h	ocfs2: Implementation of local and global quota file handling	2009-01-05 08:40:23 -08:00
heartbeat.c
heartbeat.h
inode.c	ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.	2009-01-05 08:40:32 -08:00
inode.h	ocfs2: Implementation of local and global quota file handling	2009-01-05 08:40:23 -08:00
ioctl.c
ioctl.h
journal.c	ocfs2: Checksum and ECC for directory blocks.	2009-01-05 08:40:34 -08:00
journal.h	jbd2: Avoid possible NULL dereference in jbd2_journal_begin_ordered_truncate()	2009-02-10 11:15:34 -05:00
Kconfig	fs/Kconfig: move ocfs2 out	2009-01-22 13:15:54 +03:00
localalloc.c	ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.	2009-01-05 08:40:32 -08:00
localalloc.h
locks.c
locks.h
Makefile	ocfs2: Add the underlying blockcheck code.	2009-01-05 08:40:31 -08:00
mmap.c
mmap.h
namei.c	ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.	2009-01-05 08:40:32 -08:00
namei.h
ocfs1_fs_compat.h
ocfs2_fs.h	ocfs2: Enable metadata checksums.	2009-01-05 08:40:34 -08:00
ocfs2_lockid.h	ocfs2: Implementation of local and global quota file handling	2009-01-05 08:40:23 -08:00
ocfs2_lockingver.h
ocfs2.h	ocfs2: Push out dropping of dentry lock to ocfs2_wq	2009-02-02 14:20:16 -08:00
quota_global.c	ocfs2: Fix possible deadlock in ocfs2_write_dquot()	2009-02-02 14:20:17 -08:00
quota_local.c	ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.	2009-01-05 08:40:32 -08:00
quota.h	ocfs2: Fix ocfs2_read_quota_block() error handling.	2009-01-05 08:40:24 -08:00
resize.c	ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.	2009-01-05 08:40:32 -08:00
resize.h
slot_map.c	ocfs2: Validate metadata only when it's read from disk.	2009-01-05 08:36:53 -08:00
slot_map.h
stack_o2cb.c
stack_user.c
stackglue.c
stackglue.h
suballoc.c	ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.	2009-01-05 08:40:32 -08:00
suballoc.h	ocfs2: Validate metadata only when it's read from disk.	2009-01-05 08:36:53 -08:00
super.c	ocfs2: Push out dropping of dentry lock to ocfs2_wq	2009-02-02 14:20:16 -08:00
super.h
symlink.c
symlink.h
sysfile.c
sysfile.h
uptodate.c
uptodate.h
ver.c
ver.h
xattr.c	ocfs2: Access the xattr bucket only before modifying it.	2009-02-02 14:20:18 -08:00
xattr.h	ocfs2: Create ocfs2_xattr_value_buf.	2009-01-05 08:40:32 -08:00