diff options
| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-04-06 19:01:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-07 08:31:20 -0700 |
| commit | e339ad31f59925b48a92ee3947692fdf9758b8c7 (patch) | |
| tree | 6bb85c43bfd100b0a220c788c654f2f74ca553e4 /fs/nilfs2/recovery.c | |
| parent | cece552074c591970353ad48308d65f110aeaf28 (diff) | |
nilfs2: introduce secondary super block
The former versions didn't have extra super blocks. This improves the
weak point by introducing another super block at unused region in tail of
the partition.
This doesn't break disk format compatibility; older versions just ingore
the secondary super block, and new versions just recover it if it doesn't
exist. The partition created by an old mkfs may not have unused region,
but in that case, the secondary super block will not be added.
This doesn't make more redundant copies of the super block; it is a future
work.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/nilfs2/recovery.c')
| -rw-r--r-- | fs/nilfs2/recovery.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/nilfs2/recovery.c b/fs/nilfs2/recovery.c index 6ab4c8fc5e9..6ade0963fc1 100644 --- a/fs/nilfs2/recovery.c +++ b/fs/nilfs2/recovery.c @@ -870,7 +870,6 @@ int nilfs_search_super_root(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi, if (scan_newer) ri->ri_need_recovery = NILFS_RECOVERY_SR_UPDATED; else { - nilfs->ns_prot_seq = ssi.seg_seq; if (nilfs->ns_mount_state & NILFS_VALID_FS) goto super_root_found; scan_newer = 1; |