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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-08-10 00:58:41 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-10-23 09:24:33 +0900
commit9566a7a851eb7201e3207eab53ee81efd0850fee (patch)
treeb2f57198a208e64576b951d001c6deb2c428770e /include/linux/nilfs2_fs.h
parentf5d9d249b9a6884daff513ef08afa43d3f7e085f (diff)
nilfs2: accept future revisions
Compatibility of nilfs partitions is now managed with three feature sets. This changes old compatibility check with revision number so that it can accept future revisions. Note that we can stop support of experimental versions of nilfs that doesn't know the feature sets by incrementing NILFS_CURRENT_REV. We don't have to do it soon, but it would be a possible option whenever the need arises. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'include/linux/nilfs2_fs.h')
-rw-r--r--include/linux/nilfs2_fs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h
index f5487b6f91e..b07f5cdff5e 100644
--- a/include/linux/nilfs2_fs.h
+++ b/include/linux/nilfs2_fs.h
@@ -229,6 +229,7 @@ struct nilfs_super_block {
*/
#define NILFS_CURRENT_REV 2 /* current major revision */
#define NILFS_MINOR_REV 0 /* minor revision */
+#define NILFS_MIN_SUPP_REV 2 /* minimum supported revision */
/*
* Feature set definitions