Linus Torvalds d4da6c9ccf Revert "ext4: Remove journal_checksum mount option and enable it by default" ... This reverts commit d0646f7b63, as requested by Eric Sandeen. It can basically cause an ext4 filesystem to miss recovery (and thus get mounted with errors) if the journal checksum does not match. Quoth Eric: "My hand-wavy hunch about what is happening is that we're finding a bad checksum on the last partially-written transaction, which is not surprising, but if we have a wrapped log and we're doing the initial scan for head/tail, and we abort scanning on that bad checksum, then we are essentially running an unrecovered filesystem. But that's hand-wavy and I need to go look at the code. We lived without journal checksums on by default until now, and at this point they're doing more harm than good, so we should revert the default-changing commit until we can fix it and do some good power-fail testing with the fixes in place." See http://bugzilla.kernel.org/show_bug.cgi?id=14354 for all the gory details. Requested-by: Eric Sandeen <sandeen@redhat.com> Cc: Theodore Tso <tytso@mit.edu> Cc: Alexey Fisher <bug-track@fisher-privat.net> Cc: Maxim Levitsky <maximlevitsky@gmail.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Mathias Burén <mathias.buren@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2009-11-02 10:15:27 -08:00
..
caching	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
configfs	docsrc: build Documentation/ sources	2008-08-12 16:07:30 -07:00
pohmelfs	Staging: Pohmelfs: Added IO permissions and priorities.	2009-04-17 11:06:30 -07:00
9p.txt	9p: Update documentation to add fscache related bits	2009-09-23 13:03:46 -05:00
00-INDEX	update Documentation/filesystems/00-INDEX with new nfsd related docs.	2009-04-28 12:54:45 -04:00
adfs.txt	Fix typos in /Documentation : 'U-Z'	2006-11-30 04:58:40 +01:00
affs.txt	[PATCH] kernel Doc/ URL corrections	2005-11-22 09:14:30 -08:00
afs.txt	AFS: Documentation updates	2009-08-19 10:40:13 -07:00
autofs4-mount-control.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
automount-support.txt	VFS: Unexport do_kern_mount() and clean up simple_pin_fs()	2006-06-09 09:34:16 -04:00
befs.txt	Fix typos in Documentation/: 'Q'-'R'	2006-10-03 22:54:15 +02:00
bfs.txt	remove mention of CONFIG_KMOD from documentation	2008-07-22 19:24:29 +10:00
btrfs.txt	Btrfs: Add Documentation/filesystem/btrfs.txt, remove old COPYING	2009-01-07 09:54:24 -05:00
cifs.txt
coda.txt
cramfs.txt
debugfs.txt	Document the debugfs API	2009-06-06 10:28:14 -06:00
dentry-locking.txt	[PATCH] VFS: split dentry locking documentation	2005-11-07 07:53:56 -08:00
devpts.txt	Document usage of multiple-instances of devpts	2009-01-02 10:19:36 -08:00
directory-locking	Documentation: Fix up docs still talking about i_sem	2007-05-24 10:16:17 -07:00
dlmfs.txt	Fix typos in Documentation/: 'D'-'E'	2006-10-03 22:47:42 +02:00
dnotify.txt	Documentation: move dnotify.txt to filesystems/	2008-02-07 08:42:17 -08:00
ecryptfs.txt	eCryptfs: Move ecryptfs docs into Documentation/filesystems/	2007-07-17 10:23:08 -07:00
exofs.txt	exofs: Documentation	2009-03-31 19:44:38 +03:00
Exporting	exportfs: update documentation	2007-10-22 08:13:21 -07:00
ext2.txt	Doc fix: ext2 can only have 32,000 subdirs, not 32,768	2009-06-18 13:03:44 -07:00
ext3.txt	ext3: Update documentation about ext3 quota mount options	2009-10-13 00:06:43 +02:00
ext4.txt	Revert "ext4: Remove journal_checksum mount option and enable it by default"	2009-11-02 10:15:27 -08:00
fiemap.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
files.txt	fix f_count description in Documentation/filesystems/files.txt	2008-12-31 18:07:42 -05:00
fuse.txt	[PATCH] fuse: fix typo	2006-12-30 10:56:45 -08:00
gfs2-glocks.txt	GFS2: Update docs	2009-05-19 10:23:23 +01:00
gfs2-uevents.txt	GFS2: Add a document explaining GFS2's uevents	2009-08-17 11:11:41 +01:00
gfs2.txt	GFS2: Update docs	2009-05-19 10:23:23 +01:00
hfs.txt
hfsplus.txt	Documentation: document HFSPlus	2007-07-31 15:39:38 -07:00
hpfs.txt	misc doc and kconfig typos	2007-05-09 08:58:15 +02:00
inotify.txt	[PATCH] inotify (5/5): update kernel documentation	2006-06-20 05:25:19 -04:00
isofs.txt	isofs: let mode and dmode mount options override rock ridge mode setting	2009-06-18 13:03:45 -07:00
jfs.txt	JFS: document uid, gid, and umask mount options in jfs.txt	2007-03-09 10:27:31 -06:00
knfsd-stats.txt	Document /proc/fs/nfsd/pool_stats	2009-03-27 19:24:27 -04:00
Locking	update Documentation/filesystems/Locking	2009-06-24 08:15:25 -04:00
locks.txt	Documentation: move locks.txt in filesystems/	2007-10-09 18:32:45 -04:00
mandatory-locking.txt	locks: add warning about mandatory locking races	2007-10-09 18:32:45 -04:00
ncpfs.txt	ncpfs: remove dead URL from documentation	2009-09-23 07:39:42 -07:00
nfs41-server.txt	nfsd: revise 4.1 status documentation	2009-09-21 11:13:45 -04:00
nfs-rdma.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
nfs.txt	NFS: Add a dns resolver for use with NFSv4 referrals and migration	2009-08-19 18:22:15 -04:00
nfsroot.txt	trivial: fix typo "for for" in multiple files	2009-09-21 15:14:54 +02:00
nilfs2.txt	nilfs2: modify list of unsupported features in caveats	2009-06-10 23:41:11 +09:00
ntfs.txt	NTFS: update homepage	2008-09-02 19:21:37 -07:00
ocfs2.txt	ocfs2: add mount option and Kconfig option for acl	2009-01-05 08:36:52 -08:00
omfs.txt	omfs: add filesystem documentation	2008-07-26 12:00:05 -07:00
porting	iget: remove iget() and the read_inode() super op as being obsolete	2008-02-07 08:42:29 -08:00
proc.txt	ext4: Use tracepoints for mb_history trace file	2009-09-30 00:32:42 -04:00
quota.txt	quota: documentation for sending "below quota" messages via netlink and tiny doc update	2008-08-12 16:07:27 -07:00
ramfs-rootfs-initramfs.txt	Trivial Documentation/filesystems/ramfs-rootfs-initramfs.txt fix	2008-11-30 11:40:56 -08:00
relay.txt	relay: add buffer-only channels; useful for early logging	2008-07-26 12:00:04 -07:00
romfs.txt
rpc-cache.txt	Documentation: move rpc-cache.txt to filesystems/	2008-04-11 13:20:52 -06:00
seq_file.txt	Doc: seq_file.txt fix wrong dd command example.	2009-09-10 14:33:35 -06:00
sharedsubtree.txt	doc/filesystems: more mount cleanups	2009-09-24 07:20:57 -07:00
smbfs.txt
spufs.txt	Fix typos in /Documentation : 'U-Z'	2006-11-30 04:58:40 +01:00
squashfs.txt	Squashfs: fix documentation typo, Cramfs filesystem limit is 256 MiB	2009-03-05 00:40:13 +00:00
sysfs-pci.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
sysfs.txt	driver core: documentation: make it clear that sysfs is optional	2009-07-28 13:45:23 -07:00
sysv-fs.txt	[PATCH] fs/sysv/: doc cleanup	2006-12-07 08:39:44 -08:00
tmpfs.txt	hugh: update email address	2009-05-21 13:14:32 -07:00
ubifs.txt	UBIFS: remove fast unmounting	2009-01-29 16:34:30 +02:00
udf.txt	udf: implement mode and dmode mounting options	2009-04-02 12:29:50 +02:00
ufs.txt	[PATCH] ufs2 write: mount as rw	2007-02-12 09:48:40 -08:00
vfat.txt	vfat: change the default from shortname=lower to shortname=mixed	2009-08-01 21:35:25 +09:00
vfs.txt	HWPOISON: Define a new error_remove_page address space op for async truncation	2009-09-16 11:50:13 +02:00
xfs.txt	[XFS] remove restricted chown parameter from xfs linux	2008-10-30 18:30:09 +11:00
xip.txt	DOC: update xip method info	2008-11-12 17:17:17 -08:00