tree 95c73e560b2780abc9125022032e8cc85ec518c7
parent 663e496a720a3a9fc08ea70b29724e8906b34e43
author Dave Chinner <dchinner@redhat.com> 1292893700 +1100
committer Dave Chinner <david@fromorbit.com> 1292893700 +1100

xfs: combine grant heads into a single 64 bit integer

Prepare for switching the grant heads to atomic variables by
combining the two 32 bit values that make up the grant head into a
single 64 bit variable.  Provide wrapper functions to combine and
split the grant heads appropriately for calculations and use them as
necessary.

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