• Abhi Das's avatar
    GFS2: fix bad inode i_goal values during block allocation · 00a158be
    Abhi Das authored
    
    
    This patch checks if i_goal is either zero or if doesn't exist
    within any rgrp (i.e gfs2_blk2rgrpd() returns NULL). If so, it
    assigns the ip->i_no_addr block as the i_goal.
    
    There are two scenarios where a bad i_goal can result in a
    -EBADSLT error.
    
    1. Attempting to allocate to an existing inode:
    Control reaches gfs2_inplace_reserve() and ip->i_goal is bad.
    We need to fix i_goal here.
    
    2. A new inode is created in a directory whose i_goal is hosed:
    In this case, the parent dir's i_goal is copied onto the new
    inode. Since the new inode is not yet created, the ip->i_no_addr
    field is invalid and so, the fix in gfs2_inplace_reserve() as per
    1) won't work in this scenario. We need to catch and fix it sooner
    in the parent dir itself (gfs2_create_inode()), before it is
    copied to the new inode.
    Signed-off-by: default avatarAbhi Das <adas@redhat.com>
    Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
    00a158be