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
..
acl.c
acl.h
balloc.c
bitmap.c
block_validity.c
dir.c
ext4_extents.h	ext4: Split uninitialized extents for direct I/O	2009-09-28 15:49:08 -04:00
ext4_jbd2.c
ext4_jbd2.h	ext4: Handle nested ext4_journal_start/stop calls without a journal	2009-09-29 11:01:03 -04:00
ext4.h	Revert "ext4: Remove journal_checksum mount option and enable it by default"	2009-11-02 10:15:27 -08:00
extents.c	ext4, jbd2: Drop unneeded printks at mount and unmount time	2009-09-29 15:51:30 -04:00
file.c	const: mark struct vm_struct_operations	2009-09-27 11:39:25 -07:00
fsync.c	ext4: async direct IO for holes and fallocate support	2009-09-28 15:48:29 -04:00
hash.c
ialloc.c
inode.c	[PATCH] ext4: retry failed direct IO allocations	2009-10-02 21:20:55 -04:00
ioctl.c
Kconfig	ext4: drop ext4dev compat	2009-10-01 02:21:07 -04:00
Makefile
mballoc.c	ext4: Use tracepoints for mb_history trace file	2009-09-30 00:32:42 -04:00
mballoc.h	ext4: Use tracepoints for mb_history trace file	2009-09-30 00:32:42 -04:00
migrate.c	ext4: Split uninitialized extents for direct I/O	2009-09-28 15:49:08 -04:00
move_extent.c	ext4: EXT4_IOC_MOVE_EXT: Check for different original and donor inodes first	2009-09-28 15:58:29 -04:00
namei.c	ext4: Handle nested ext4_journal_start/stop calls without a journal	2009-09-29 11:01:03 -04:00
resize.c
super.c	Revert "ext4: Remove journal_checksum mount option and enable it by default"	2009-11-02 10:15:27 -08:00
symlink.c
xattr_security.c
xattr_trusted.c
xattr_user.c
xattr.c	ext4: limit block allocations for indirect-block files to < 2^32	2009-09-16 14:45:10 -04:00
xattr.h