[PATCH v5 03/11] xfs: support the XFS_BTNUM_FINOBT free inode btree type

[Brian Foster]

On Thu, Apr 24, 2014 at 03:27:22PM +1000, Dave Chinner wrote:
> On Thu, Apr 10, 2014 at 12:08:28PM -0400, Brian Foster wrote:
> > Define the AGI fields for the finobt root/level and add magic
> > numbers. Update the btree code to add support for the new
> > XFS_BTNUM_FINOBT inode btree.
> > 
> > The finobt root block is reserved immediately following the inobt
> > root block in the AG. Update XFS_PREALLOC_BLOCKS() to determine the
> > starting AG data block based on whether finobt support is enabled.
> > 
> > Signed-off-by: Brian Foster <bfoster at redhat.com>
> 
> Looks good.
> 
> Reviewed-by: Dave Chinner <dchinner at redhat.com>
> 
> FWIW, xfstests doesn't give us particularly good coverage of all
> the finobt operations:
> 
> $ $ grep fibt /proc/fs/xfs/stat 
> fibt2 43617 50359 338 336 0 0 0 0 0 0 0 0 0 0 136
> 
> So perhaps we want to look at improving that over time.
> 

Ok, noted. I'll have to think about some tests tailored to exercise the
finobt.

Brian

> Cheers,
> 
> Dave.
> -- 
> Dave Chinner
> david at fromorbit.com