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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-07-22 03:22:20 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-07-23 10:02:16 +0900
commitc5ca48aabe8b11674bf1102abe52d17ecc053f9c (patch)
tree18c7647b42981d457c59cd4a842ca342a239770d /fs/nilfs2/nilfs.h
parent1a80a1763fb760b3a84a28df87515f7cdc07a4f4 (diff)
nilfs2: reject incompatible filesystem
This forces nilfs to check compatibility of feature flags so as to reject a filesystem with unknown features when it mounts or remounts the filesystem. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/nilfs.h')
-rw-r--r--fs/nilfs2/nilfs.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h
index cfedc48d78d..0842d775b3e 100644
--- a/fs/nilfs2/nilfs.h
+++ b/fs/nilfs2/nilfs.h
@@ -275,6 +275,8 @@ extern struct nilfs_super_block *
nilfs_read_super_block(struct super_block *, u64, int, struct buffer_head **);
extern int nilfs_store_magic_and_option(struct super_block *,
struct nilfs_super_block *, char *);
+extern int nilfs_check_feature_compatibility(struct super_block *,
+ struct nilfs_super_block *);
extern void nilfs_set_log_cursor(struct nilfs_super_block *,
struct the_nilfs *);
extern struct nilfs_super_block **nilfs_prepare_super(struct nilfs_sb_info *,