The patch below fixes two flaws in minix_clear_inode.

The first is that it tests bh which is never initialized.  (&bh is a
parameter of minix_V1_raw_inode, but that routine can fail and return
before it has set bh)

The second is that generic_delete_inode() goes BUG() in case inode->i_state
!= I_CLEAR.  Clearly, it is expected that inode->i_sb->s_op->delete_inode
does a clear_inode() at some point.  But minix_delete_inode() calls
minix_free_inode() and that routine can print an error and return early,
before calling clear_inode().
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>