[XFS updates] XFS development tree branch, master, updated. v3.2-rc1-11440-g92b2e5b

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  92b2e5b xfs: use a normal shrinker for the dquot freelist
      from  4177af3a8a6f119484c7903845c6693d7381c13e (commit)

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- Log -----------------------------------------------------------------
commit 92b2e5b31dd2ad2c9273578c2289d17f417fe32d
Author: Christoph Hellwig <hch at infradead.org>
Date:   Wed Feb 1 13:57:20 2012 +0000

    xfs: use a normal shrinker for the dquot freelist
    Stop reusing dquots from the freelist when allocating new ones directly, and
    implement a shrinker that actually follows the specifications for the
    interface.  The shrinker implementation is still highly suboptimal at this
    point, but we can gradually work on it.
    This also fixes an bug in the previous lock ordering, where we would take
    the hash and dqlist locks inside of the freelist lock against the normal
    lock ordering.  This is only solvable by introducing the dispose list,
    and thus not when using direct reclaim of unused dquots for new allocations.
    As a side-effect the quota upper bound and used to free ratio values in
    /proc/fs/xfs/xqm are set to 0 as these values don't make any sense in the
    new world order.
    Signed-off-by: Christoph Hellwig <hch at lst.de>
    Signed-off-by: Ben Myers <bpm at sgi.com>
    (cherry picked from commit 04da0c8196ac0b12fb6b84f4b7a51ad2fa56d869)


Summary of changes:
 fs/xfs/kmem.h         |    6 -
 fs/xfs/xfs_dquot.c    |  103 +++++-------------
 fs/xfs/xfs_qm.c       |  291 +++++++++++++++++++------------------------------
 fs/xfs/xfs_qm.h       |   14 ---
 fs/xfs/xfs_qm_stats.c |    4 +-
 fs/xfs/xfs_trace.h    |    5 +-
 6 files changed, 141 insertions(+), 282 deletions(-)

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