Revert part of 455696 that caused "stuck in gfs_releasepage()"
    
    bz 455696
    
    As part of the 455696 patch, I changed a small section
    of code relating to gfs_aspace_releasepage.  As a result
    of that change, I could recreate "stuck in gfs_releasepage()"
    messages by doing a dd from /dev/zero to gfs, at least
    if the statfs_fast tuneable was set.  This patch reverts
    that section of the patch and fixes the problem.