needs porting to v4.1 (do_sync_read/do_sync_write no longer exist)

[Andy Whitcroft]

Seems upstream have finally removed do_sync_read() and do_sync_write(), leading us to start defining compatibility functions which use also removed interfaces generic_file_read() and generic_file_write(). We need to avoid using these.

[Andy Whitcroft (apw)]

Seems there are two 4.1 related upstream fixes in the git repository. Will try cherry-picking these.

[Andy Whitcroft (apw)]

Seems that the following two commits from what will likely be 1.6.13 upstream fix the builds:

commit 5c1237432edf4600111845d175c92252430d5f76
Author: Marc Dionne <email address hidden>
Date: Mon Apr 20 10:41:53 2015 -0300

    Linux 4.1: Don't define or use ->write directly

commit fcfa5ae2468d878db962a93d6013fcd3042e6c13
Author: Marc Dionne <email address hidden>
Date: Mon Apr 20 10:37:40 2015 -0300

    Linux 4.1: No need for do_sync_read

[Launchpad Janitor (janitor)]

This bug was fixed in the package openafs - 1.6.11.1-1ubuntu1

---------------
openafs (1.6.11.1-1ubuntu1) wily; urgency=low

  * d/p/Linux-4.1-No-need-for-do_sync_read.patch
    d/p/Linux-4.1-Don-t-define-or-use-write-directly.patch
    - Upstream v4.1 porting patches cherry-picked from upstream git.
      (LP: #1473902)

 -- Andy Whitcroft <email address hidden> Mon, 13 Jul 2015 10:06:55 +0100