linux-toradex.git/fs/dlm/rcom.c, branch v3.2.55

dlm: record full callback state

2011-03-10T16:40:00+00:00

Change how callbacks are recorded for locks.  Previously, information
about multiple callbacks was combined into a couple of variables that
indicated what the end result should be.  In some situations, we
could not tell from this combined state what the exact sequence of
callbacks were, and would end up either delivering the callbacks in
the wrong order, or suppress redundant callbacks incorrectly.  This
new approach records all the data for each callback, leaving no
uncertainty about what needs to be delivered.

Signed-off-by: David Teigland

dlm: always use GFP_NOFS

2009-11-30T22:34:43+00:00

Replace all GFP_KERNEL and ls_allocation with GFP_NOFS.
ls_allocation would be GFP_KERNEL for userland lockspaces
and GFP_NOFS for file system lockspaces.

It was discovered that any lockspaces on the system can
affect all others by triggering memory reclaim in the
file system which could in turn call back into the dlm
to acquire locks, deadlocking dlm threads that were
shared by all lockspaces, like dlm_recv.

Signed-off-by: David Teigland

dlm: fix rcom_names message to self

2008-02-21T21:19:54+00:00

The recent patch to validate data lengths in rcom_names messages
failed to account for fake messages a node directs to itself before
ever sending it.  In this case we need to fill in the message length
in the header for the validation code to use.

Signed-off-by: David Teigland

dlm: proper types for asts and basts

2008-02-06T06:35:45+00:00

Use proper types for ast and bast functions, and use
consistent type for ast param.

Signed-off-by: David Teigland

dlm: verify that places expecting rcom_lock have packet long enough

2008-02-04T07:25:09+00:00

Signed-off-by: Al Viro 
Signed-off-by: David Teigland

dlm: missing length check in check_config()

2008-02-04T07:24:20+00:00

Signed-off-by: Al Viro 
Signed-off-by: David Teigland

dlm: use proper type for ->ls_recover_buf

2008-02-04T07:24:07+00:00

Signed-off-by: Al Viro 
Signed-off-by: David Teigland

dlm: do not byteswap rcom_config

2008-02-04T07:23:43+00:00

Signed-off-by: Al Viro 
Signed-off-by: David Teigland

dlm: do not byteswap rcom_lock

2008-02-04T07:23:14+00:00

Signed-off-by: Al Viro 
Signed-off-by: David Teigland

dlm: clean ups

2008-01-30T17:04:43+00:00

A couple small clean-ups.  Remove unnecessary wrapper-functions in
rcom.c, and remove unnecessary casting and an unnecessary ASSERT in
util.c.

Signed-off-by: David Teigland