linux/fs/nilfs2
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_union.h
bmap.c
bmap.h
btnode.c
btnode.h
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
cpfile.h
dat.c
dat.h
dir.c
direct.c
direct.h
file.c
gcdat.c
gcinode.c
ifile.c
ifile.h
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
Makefile
mdt.c
mdt.h
namei.c
nilfs.h
page.c
page.h
recovery.c nilfs2: insert checkpoint number in segment summary header 2010-05-10 11:32:31 +09:00
sb.h
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
sufile.h
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