[PATCH 05/14] xfs: make AIL tail pushing independent of the grant lock

[Dave Chinner]

On Wed, Dec 01, 2010 at 07:45:40AM -0500, Christoph Hellwig wrote:
> Once l_tail_lsn and l_last_sync_lsn are converted to atomic64_ts later
> in the series passing them in separately becomes pointless again.  Maybe
> scale the patch back a bit and require the caller to hold l_grant_lock
> for now, until the atomic64_t conversion happens. 

Same reasoning as for the change to xlog_space_left - the values
should only be sampled once for correctness, which is why I pass
them into the function. more "const" annotations, I guess.

Cheers,

Dave.
-- 
Dave Chinner
david at fromorbit.com