Revision c1230df7e19e0f27655c0eb9d966c7e03be7cc50 authored by Paulo Zanoni on 03 May 2012, 01:55:43 UTC, committed by Daniel Vetter on 03 May 2012, 13:55:38 UTC
While testing with the intel_infoframes tool on gen4, I see that when
video DIP is disabled, what we write to the DATA memory is not exactly
what we read back later.

This regression has been introduce in

commit 64a8fc0145a1d0fdc25fc9367c2e6c621955fb3b
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date:   Thu Sep 22 11:16:00 2011 +0530

    drm/i915: fix ILK+ infoframe support

That commit was setting VIDEO_DIP_CTL to 0 when initializing, which
caused the problem.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43947
Cc: stable@kernel.org
Tested-by: Yang Guang <guang.a.yang@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
[danvet: Pimped commit message by using the usual commit citation
layout.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
1 parent 6200497
Raw File
gfs2.txt
Global File System
------------------

http://sources.redhat.com/cluster/wiki/

GFS is a cluster file system. It allows a cluster of computers to
simultaneously use a block device that is shared between them (with FC,
iSCSI, NBD, etc).  GFS reads and writes to the block device like a local
file system, but also uses a lock module to allow the computers coordinate
their I/O so file system consistency is maintained.  One of the nifty
features of GFS is perfect consistency -- changes made to the file system
on one machine show up immediately on all other machines in the cluster.

GFS uses interchangeable inter-node locking mechanisms, the currently
supported mechanisms are:

  lock_nolock -- allows gfs to be used as a local file system

  lock_dlm -- uses a distributed lock manager (dlm) for inter-node locking
  The dlm is found at linux/fs/dlm/

Lock_dlm depends on user space cluster management systems found
at the URL above.

To use gfs as a local file system, no external clustering systems are
needed, simply:

  $ mkfs -t gfs2 -p lock_nolock -j 1 /dev/block_device
  $ mount -t gfs2 /dev/block_device /dir

If you are using Fedora, you need to install the gfs2-utils package
and, for lock_dlm, you will also need to install the cman package
and write a cluster.conf as per the documentation.

GFS2 is not on-disk compatible with previous versions of GFS, but it
is pretty close.

The following man pages can be found at the URL above:
  fsck.gfs2		to repair a filesystem
  gfs2_grow		to expand a filesystem online
  gfs2_jadd		to add journals to a filesystem online
  gfs2_tool		to manipulate, examine and tune a filesystem
  gfs2_quota	to examine and change quota values in a filesystem
  gfs2_convert	to convert a gfs filesystem to gfs2 in-place
  mount.gfs2	to help mount(8) mount a filesystem
  mkfs.gfs2		to make a filesystem
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