[PATCH 4/4] xfs: rewrite and optimize the delalloc write path

[Christoph Hellwig]

On Fri, Aug 26, 2016 at 12:07:53PM -0400, Brian Foster wrote:
> > Not quite sure I follow the last bit, but I don't necessarily think the
> > whole thing has to be boxed into a helper to clean it up. E.g., I'd do
> > something like the appended diff (compile tested only).
> > 
> 
> ... and if the function signature is really an issue, trade off idx &
> prev for a conditional base preallocation size (applies on top of the
> previous diff):

These two patches together look pretty reasonable.  I'll retest with
it include and will pick it up for the next version if it works.