tree 082b395f587dca7903c083e8e10529be1890dc4e
parent be7ffc38a80a78e6b68d0f51fae8e8d57b55324c
author Christoph Hellwig <hch@infradead.org> 1323208698 +0000
committer Ben Myers <bpm@sgi.com> 1323901941 -0600

xfs: flatten the dquot lock ordering

Introduce a new XFS_DQ_FREEING flag that tells lookup and mplist walks
to skip a dquot that is beeing freed, and use this avoid the trylock
on the hash and mplist locks in xfs_qm_dqreclaim_one.  Also simplify
xfs_dqpurge by moving the inodes to a dispose list after marking them
XFS_DQ_FREEING and avoid the locker ordering constraints.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>