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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-08-09 17:58:41 +0200
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-10-23 02:24:33 +0200
commit9566a7a851eb7201e3207eab53ee81efd0850fee (patch)
treeb2f57198a208e64576b951d001c6deb2c428770e /fs/nilfs2/the_nilfs.c
parentMerge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/... (diff)
downloadlinux-9566a7a851eb7201e3207eab53ee81efd0850fee.tar.xz
linux-9566a7a851eb7201e3207eab53ee81efd0850fee.zip
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 'fs/nilfs2/the_nilfs.c')
-rw-r--r--fs/nilfs2/the_nilfs.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
index ba7c10c917fc..461b7211e14f 100644
--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -468,8 +468,8 @@ static unsigned long long nilfs_max_size(unsigned int blkbits)
static int nilfs_store_disk_layout(struct the_nilfs *nilfs,
struct nilfs_super_block *sbp)
{
- if (le32_to_cpu(sbp->s_rev_level) != NILFS_CURRENT_REV) {
- printk(KERN_ERR "NILFS: revision mismatch "
+ if (le32_to_cpu(sbp->s_rev_level) < NILFS_MIN_SUPP_REV) {
+ printk(KERN_ERR "NILFS: unsupported revision "
"(superblock rev.=%d.%d, current rev.=%d.%d). "
"Please check the version of mkfs.nilfs.\n",
le32_to_cpu(sbp->s_rev_level),