[PATCH 0/4 v2] xfs: get rid of xfs_cluster_write()

[Dave Chinner <david@xxxxxxxxxxxxx>]

Hi folks,

This is the second version of the patchset that removes
xfs_cluster_write() in preference to using state in
generic_writepages to enable clustering of pages. The full
description from the v1 patchset is here:

http://oss.sgi.com/archives/xfs/2015-08/msg00224.html

The end result is effectively unchanged from version 1, just the
breakdown of the patches is different to the original posting, as
requested by Christoph.

-Dave.

Version 2:
- promote removal of non-blocking behaviour to be an initial cleanup
  patch
- collapse staged introduction of struct xfs_writepage_context into
  a single patch.