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Ryusuke Konishi d240e06713 nilfs2: disallow remount of snapshot from/to a regular mount 
Snapshots and regular ro/rw mounts are essentially-different within
the meaning whether the checkpoint is static or not and is marked with
a snapshot flag or not.

The current implemenation, however, allows to remount a snapshot to a
regular rw-mount if the checkpoint number equals the latest one.

This transition is actually impossible since changing a checkpoint to
a snapshot makes another checkpoint, thus the condition is never
satisfied.

This fixes the weird state of affairs, and specifically separates
snapshots and regular rw/ro-mounts.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2010-05-10 11:32:34 +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.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
bmap_union.h
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 nilfs2: use huge_encode_dev/huge_decode_dev 2010-05-10 11:32:34 +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: disallow remount of snapshot from/to a regular mount 2010-05-10 11:32:34 +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