linux.git/fs/dlm, branch v2.6.39

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi

dlm: use alloc_workqueue function

2011-03-10T19:22:34+00:00

Replaces deprecated create_singlethread_workqueue().

Signed-off-by: David Teigland

dlm: increase default hash table sizes

2011-03-10T19:08:22+00:00

Make all three hash tables a consistent size of 1024
rather than 1024, 512, 256.  All three tables, for
resources, locks, and lock dir entries, will generally
be filled to the same order of magnitude.

Signed-off-by: David Teigland

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: use single thread workqueues

2011-02-11T22:50:47+00:00

The recent commit to use cmwq for send and recv threads
dcce240ead802d42b1e45ad2fcb2ed4a399cb255 introduced problems,
apparently due to multiple workqueue threads.  Single threads
make the problems go away, so return to that until we fully
understand the concurrency issues with multiple threads.

Signed-off-by: David Teigland

dlm: Make DLM depend on CONFIGFS_FS

2011-01-16T21:22:37+00:00

This patch fixes the following kconfig error after changing
CONFIGFS_FS -> select SYSFS:

fs/sysfs/Kconfig:1:error: recursive dependency detected!
fs/sysfs/Kconfig:1:	symbol SYSFS is selected by CONFIGFS_FS
fs/configfs/Kconfig:1:	symbol CONFIGFS_FS is selected by DLM
fs/dlm/Kconfig:1:	symbol DLM depends on SYSFS

Signed-off-by: Nicholas A. Bellinger 
Cc: Joel Becker 
Cc: Randy Dunlap 
Cc: Stephen Rothwell 
Cc: James Bottomley

dlm: sanitize work_start() in lowcomms.c

2010-12-13T19:42:24+00:00

The create_workqueue() returns NULL if failed rather than ERR_PTR().
Fix error checking and remove unnecessary variable 'error'.

Signed-off-by: Namhyung Kim 
Cc: Tejun Heo 
Signed-off-by: David Teigland

dlm: reduce cond_resched during send

2010-11-12T17:15:20+00:00

Calling cond_resched() after every send can unnecessarily
degrade performance.  Go back to an old method of scheduling
after 25 messages.

Signed-off-by: Bob Peterson 
Signed-off-by: David Teigland

dlm: use TCP_NODELAY

2010-11-12T17:12:55+00:00

Nagling doesn't help and can sometimes hurt dlm comms.

Signed-off-by: David Teigland

dlm: Use cmwq for send and receive workqueues

2010-11-12T17:08:03+00:00

So far as I can tell, there is no reason to use a single-threaded
send workqueue for dlm, since it may need to send to several sockets
concurrently. Both workqueues are set to WQ_MEM_RECLAIM to avoid
any possible deadlocks, WQ_HIGHPRI since locking traffic is highly
latency sensitive (and to avoid a priority inversion wrt GFS2's
glock_workqueue) and WQ_FREEZABLE just in case someone needs to do
that (even though with current cluster infrastructure, it doesn't
make sense as the node will most likely land up ejected from the
cluster) in the future.

Signed-off-by: Steven Whitehouse 
Cc: Tejun Heo 
Signed-off-by: David Teigland