Upcoming ABI Breakage in RELENG_7

Ken Smith kensmith at cse.Buffalo.EDU
Tue Jul 29 15:45:53 UTC 2008

Normally the FreeBSD Project tries very hard to avoid ABI breakage in
"Stable Branches".  However occasionally the fix for a bug can not be
implemented without ABI breakage, and it is decided that the fix
warrants the impact of the ABI breakage.  We have one of those
situations coming along for RELENG_7 (what will become FreeBSD 7.1).
The ABI breakage should only impact kernel modules that are not part of
the baseline system (those will be patched by the MFC) which deal with
advisory locks.  As such the impact should not cause many people

The work that will be MFCed fixes issues with filesystem advisory locks,
and moves the advisory locks list from filesystem-private data
structures into the vnode structure.

The MFC will be done by Kostantin Belousov some time this coming Friday
(August 1st, 2008) if you have concerns and want to watch for it.


                                                Ken Smith
- From there to here, from here to      |       kensmith at cse.buffalo.edu
  there, funny things are everywhere.   |
                      - Theodore Geisel |

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