Btrfs: shared seed device
This patch makes seed device possible to be shared by
multiple mounted file systems. The sharing is achieved
by cloning seed device's btrfs_fs_devices structure.
Thanks you,
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 09908f2..84c3b66 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -58,14 +58,15 @@
static void btrfs_put_super (struct super_block * sb)
{
struct btrfs_root *root = btrfs_sb(sb);
- struct btrfs_fs_info *fs = root->fs_info;
int ret;
ret = close_ctree(root);
if (ret) {
printk("close ctree returns %d\n", ret);
}
- btrfs_sysfs_del_super(fs);
+#if 0
+ btrfs_sysfs_del_super(root->fs_info);
+#endif
sb->s_fs_info = NULL;
}
@@ -349,11 +350,12 @@
err = -ENOMEM;
goto fail_close;
}
-
+#if 0
/* this does the super kobj at the same time */
err = btrfs_sysfs_add_super(tree_root->fs_info);
if (err)
goto fail_close;
+#endif
sb->s_root = root_dentry;