tree b658055f660f7c825298cc2a88b3246e78fb1bce
parent 089716aa1480b7197bcd678b8477774c379a2768
author Dave Chinner <david@fromorbit.com> 1264479221 +1100
committer Dave Chinner <david@fromorbit.com> 1264479221 +1100

xfs: Use delay write promotion for dquot flushing

xfs_qm_dqflock_pushbuf_wait() does a very similar trick to item
pushing used to do to flush out delayed write dquot buffers. Change
it to use the new promotion method rather than an async flush.

Also, xfs_qm_dqflock_pushbuf_wait() can return without the flush lock
held, yet the callers make the assumption that after this call the
flush lock is held. Always return with the flush lock held.

Signed-off-by: Dave Chinner <david@fromorbit.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>