linux-stable.git/fs/dlm, branch linux-2.6.22.y

DLM must depend on SYSFS

2007-07-07T21:17:43+00:00

The dependency of DLM on SYSFS got lost in
commit 6ed7257b46709e87d79ac2b6b819b7e0c9184998 resulting in the
following compile error with CONFIG_DLM=y, CONFIG_SYSFS=n:

<--  snip  -->

...
  LD      .tmp_vmlinux1
fs/built-in.o: In function `dlm_lockspace_init':
/home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/fs/dlm/lockspace.c:231: undefined reference to `kernel_subsys'
fs/built-in.o: In function `configfs_init':
/home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/fs/configfs/mount.c:143: undefined reference to `kernel_subsys'
make[1]: *** [.tmp_vmlinux1] Error 1

<--  snip  -->

Signed-off-by: Adrian Bunk 
Signed-off-by: Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw

2007-05-07T19:26:27+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (34 commits)
  [GFS2] Uncomment sprintf_symbol calling code
  [DLM] lowcomms style
  [GFS2] printk warning fixes
  [GFS2] Patch to fix mmap of stuffed files
  [GFS2] use lib/parser for parsing mount options
  [DLM] Lowcomms nodeid range & initialisation fixes
  [DLM] Fix dlm_lowcoms_stop hang
  [DLM] fix mode munging
  [GFS2] lockdump improvements
  [GFS2] Patch to detect corrupt number of dir entries in leaf and/or inode blocks
  [GFS2] bz 236008: Kernel gpf doing cat /debugfs/gfs2/xxx (lock dump)
  [DLM] fs/dlm/ast.c should #include "ast.h"
  [DLM] Consolidate transport protocols
  [DLM] Remove redundant assignment
  [GFS2] Fix bz 234168 (ignoring rgrp flags)
  [DLM] change lkid format
  [DLM] interface for purge (2/2)
  [DLM] add orphan purging code (1/2)
  [DLM] split create_message function
  [GFS2] Set drop_count to 0 (off) by default
  ...

remove "struct subsystem" as it is no longer needed

2007-05-03T01:57:59+00:00

We need to work on cleaning up the relationship between kobjects, ksets and
ktypes.  The removal of 'struct subsystem' is the first step of this,
especially as it is not really needed at all.

Thanks to Kay for fixing the bugs in this patch.

Signed-off-by: Greg Kroah-Hartman

[DLM] lowcomms style

2007-05-01T08:11:51+00:00

Replace some printk with log_print, and fix some simple cases of lines
over 80.  Also, return -ENOTCONN if lowcomms_start fails due to no local
IP address being available.

Signed-off-by: David Teigland 
Signed-off-by: Steven Whitehouse

[DLM] Lowcomms nodeid range & initialisation fixes

2007-05-01T08:11:41+00:00

Fix a few range & initialization bugs in lowcomms.
- max_nodeid is really the highest nodeid encountered, so all loops must include
it in their iterations.
- clean dlm_local_count & connection_idr so we can do a clean restart.
- Remove a spurious BUG_ON

Signed-Off-By: Patrick Caulfield 
Signed-off-by: Steven Whitehouse

[DLM] Fix dlm_lowcoms_stop hang

2007-05-01T08:11:38+00:00

When you attempt to release a lockspace in DLM, it will hang trying to down a
semaphore that has already been downed.  The attached patch fixes the problem.

Signed-off-by: Josef Bacik 
Signed-off-by: Steven Whitehouse 
Cc: Patrick Caulfield

[DLM] fix mode munging

2007-05-01T08:11:36+00:00

There are flags to enable two specialized features in the dlm:
1. CONVDEADLK causes the dlm to resolve conversion deadlocks internally by
   changing the granted mode of locks to NL.
2. ALTPR/ALTCW cause the dlm to change the requested mode of locks to PR
   or CW to grant them if the normal requested mode can't be granted.

GFS direct i/o exercises both of these features, especially when mixed
with buffered i/o.  The dlm has problems with them.

The first problem is on the master node. If it demotes a lock as a part of
converting it, the actual step of converting the lock isn't being done
after the demotion, the lock is just left sitting on the granted queue
with a granted mode of NL.  I think the mistaken assumption was that the
call to grant_pending_locks() would grant it, but that function naturally
doesn't look at locks on the granted queue.

The second problem is on the process node.  If the master either demotes
or gives an altmode, the munging of the gr/rq modes is never done in the
process copy of the lock, leaving the master/process copies out of sync.

Signed-off-by: David Teigland 
Signed-off-by: Steven Whitehouse

[DLM] fs/dlm/ast.c should #include "ast.h"

2007-05-01T08:11:25+00:00

Every file should include the headers containing the prototypes for
it's global functions.

Signed-off-by: Adrian Bunk 
Signed-off-by: David Teigland 
Signed-off-by: Steven Whitehouse

[DLM] Consolidate transport protocols

2007-05-01T08:11:23+00:00

This patch consolidates the TCP & SCTP protocols for the DLM into a single file
and makes it switchable at run-time (well, at least before the DLM actually
starts up!)

For RHEL5 this patch requires Neil Horman's patch that expands the in-kernel
socket API but that has already been twice ACKed so it should be OK.

The patch adds a new lowcomms.c file that replaces the existing lowcomms-sctp.c
& lowcomms-tcp.c files.

Signed-off-By: Patrick Caulfield 
Signed-off-by: Steven Whitehouse

[DLM] Remove redundant assignment

2007-05-01T08:11:20+00:00

This patch removes a redundant (and incorrect) assignment from compat_output

Signed-Off-By: Patrick Caulfield 
Signed-off-by: Steven Whitehouse