[PATCH 3.13.y-ckt 052/122] nilfs2: fix sanity check of btree level in nilfs_btree_root_broken()

3.13.11-ckt22 -stable review patch. If anyone has any objections, please let me know. -- From: Ryusuke Konishi commit d8fd150fe3935e1692bf57c66691e17409ebb9c1 upstream. The range check for b-tree level parameter in nilfs_btree_root_broken() is wrong; it accepts the case of

[PATCH 3.13.y-ckt 052/122] nilfs2: fix sanity check of btree level in nilfs_btree_root_broken()

3.13.11-ckt22 -stable review patch. If anyone has any objections, please let me know. -- From: Ryusuke Konishi konishi.ryus...@lab.ntt.co.jp commit d8fd150fe3935e1692bf57c66691e17409ebb9c1 upstream. The range check for b-tree level parameter in nilfs_btree_root_broken() is