Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw

Pull GFS2 updates from Steven Whitehouse:
 "The major feature this time is the "rbm" conversion in the resource
  group code.  The new struct gfs2_rbm specifies the location of an
  allocatable block in (resource group, bitmap, offset) form.  There are
  a number of added helper functions, and later patches then rewrite
  some of the resource group code in terms of this new structure.  Not
  only does this give us a nice code clean up, but it also removes some
  of the previous restrictions where extents could not cross bitmap
  boundaries, for example.

  In addition to that, there are a few bug fixes and clean ups, but the
  rbm work is by far the majority of this patch set in terms of number
  of changed lines."

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw: (27 commits)
  GFS2: Write out dirty inode metadata in delayed deletes
  GFS2: fix s_writers.counter imbalance in gfs2_ail_empty_gl
  GFS2: Fix infinite loop in rbm_find
  GFS2: Consolidate free block searching functions
  GFS2: Get rid of I_MUTEX_QUOTA usage
  GFS2: Stop block extents at the end of bitmaps
  GFS2: Fix unclaimed_blocks() wrapping bug and clean up
  GFS2: Improve block reservation tracing
  GFS2: Fall back to ignoring reservations, if there are no other blocks left
  GFS2: Fix ->show_options() for statfs slow
  GFS2: Use rbm for gfs2_setbit()
  GFS2: Use rbm for gfs2_testbit()
  GFS2: Eliminate unnecessary check for state > 3 in bitfit
  GFS2: Eliminate redundant calls to may_grant
  GFS2: Combine functions gfs2_glock_dq_wait and wait_on_demote
  GFS2: Combine functions gfs2_glock_wait and wait_on_holder
  GFS2: inline __gfs2_glock_schedule_for_reclaim
  GFS2: change function gfs2_direct_IO to use a normal gfs2_glock_dq
  GFS2: rbm code cleanup
  GFS2: Fix case where reservation finished at end of rgrp
  ...

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