Ryusuke Konishi 25294d8c37 nilfs2: use checkpoint number instead of timestamp to select super block ... Nilfs maintains two super blocks, and selects the new one on mount time if they both have valid checksums and their timestamps differ. However, this has potential for mis-selection since the system clock may be rewinded and the resolution of the timestamps is not high. Usually this doesn't become an issue because both super blocks are updated at the same time when the file system is unmounted. Even if the file system wasn't unmounted cleanly, the roll-forward recovery will find the proper log which stores the latest super root. Thus, the issue can appear only if update of one super block fails and the clock happens to be rewinded. This fixes the issue by using checkpoint numbers instead of timestamps to pick the super block storing the location of the latest log. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>		2010-05-10 11:32:32 +09:00
..
alloc.c	nilfs2: add kernel doc comments to persistent object allocator functions	2010-05-10 11:32:31 +09:00
alloc.h	nilfs2: add kernel doc comments to persistent object allocator functions	2010-05-10 11:32:31 +09:00
bmap_union.h	nilfs2: integrated block mapping	2009-04-07 08:31:13 -07:00
bmap.c	nilfs2: trivial coding style fix	2009-12-25 13:01:50 +09:00
bmap.h	nilfs2: convert nilfs_bmap_lookup to an inline function	2009-09-14 18:27:16 +09:00
btnode.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
btnode.h	nilfs2: eliminate nilfs_btnode_get function	2009-11-20 10:05:50 +09:00
btree.c	nilfs2: cleanup multi kmem_cache_{create,destroy} code	2010-05-10 11:32:30 +09:00
btree.h	nilfs2: cleanup multi kmem_cache_{create,destroy} code	2010-05-10 11:32:30 +09:00
cpfile.c	nilfs2: trivial coding style fix	2009-12-25 13:01:50 +09:00
cpfile.h	nilfs2: separate read method of meta data files on super root block	2009-11-20 10:05:48 +09:00
dat.c	nilfs2: fix various typos in comments	2010-03-14 10:29:51 +09:00
dat.h	nilfs2: separate read method of meta data files on super root block	2009-11-20 10:05:48 +09:00
dir.c	nilfs2: fix typo "cout" -> "count" in error message	2010-03-14 10:29:50 +09:00
direct.c	nilfs2: trivial coding style fix	2009-12-25 13:01:50 +09:00
direct.h	nilfs2: remove nilfs_direct_operations from direct mapping	2009-06-10 23:41:11 +09:00
file.c	const: constify remaining file_operations	2009-10-01 16:11:11 -07:00
gcdat.c	nilfs2: flush palloc cache before manipulating data pages of GC dat	2009-11-20 10:05:50 +09:00
gcinode.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
ifile.c	nilfs2: add palloc cache to ifile	2009-11-20 10:05:50 +09:00
ifile.h	nilfs2: separate constructor of metadata files	2009-11-20 10:05:48 +09:00
inode.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
ioctl.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2	2010-04-12 18:34:25 -07:00
Kconfig	Revert "task_struct: make journal_info conditional"	2009-12-17 13:23:24 -08:00
Makefile	nilfs2: update makefile and Kconfig	2009-04-07 08:31:16 -07:00
mdt.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
mdt.h	nilfs2: add cache framework for persistent object allocator	2009-11-20 10:05:50 +09:00
namei.c	nilfs really shouldn't slap struct dentry on stack...	2010-03-03 14:07:58 -05:00
nilfs.h	nilfs really shouldn't slap struct dentry on stack...	2010-03-03 14:07:58 -05:00
page.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
page.h	nilfs2: buffer and page operations	2009-04-07 08:31:13 -07:00
recovery.c	nilfs2: insert checkpoint number in segment summary header	2010-05-10 11:32:31 +09:00
sb.h	nilfs2: simplify remaining sget() use	2009-06-11 21:36:18 -04:00
segbuf.c	nilfs2: insert checkpoint number in segment summary header	2010-05-10 11:32:31 +09:00
segbuf.h	nilfs2: insert checkpoint number in segment summary header	2010-05-10 11:32:31 +09:00
segment.c	nilfs2: make nilfs_sc_*_ops static	2010-05-10 11:32:31 +09:00
segment.h	nilfs2: change sc_timer from a pointer to an embedded one in struct nilfs_sc_info	2010-05-10 11:32:31 +09:00
sufile.c	nilfs2: fix various typos in comments	2010-03-14 10:29:51 +09:00
sufile.h	nilfs2: clean up get/put function of a segment usage	2009-11-20 10:05:51 +09:00
super.c	nilfs2: add missing endian conversion on super block magic number	2010-05-10 11:32:32 +09:00
the_nilfs.c	nilfs2: use checkpoint number instead of timestamp to select super block	2010-05-10 11:32:32 +09:00
the_nilfs.h	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00