linux-toradex.git/fs/dlm/lock.c, branch v3.4.93

dlm: fix QUECVT when convert queue is empty

2012-04-23T16:30:59+00:00

The QUECVT flag should not prevent conversions from
being granted immediately when the convert queue is
empty.

Signed-off-by: David Teigland

dlm: fix slow rsb search in dir recovery

2012-03-08T20:46:30+00:00

The function used to find an rsb during directory
recovery was searching the single linear list of
rsb's.  This wasted a lot of time compared to
using the standard hash table to find the rsb.

Signed-off-by: David Teigland

dlm: convert rsb list to rb_tree

2011-11-18T16:20:15+00:00

Change the linked lists to rb_tree's in the rsb
hash table to speed up searches.  Slow rsb searches
were having a large impact on gfs2 performance due
to the large number of dlm locks gfs2 uses.

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

dlm: use workqueue for callbacks

2011-07-15T17:30:43+00:00

Instead of creating our own kthread (dlm_astd) to deliver
callbacks for all lockspaces, use a per-lockspace workqueue
to deliver the callbacks.  This eliminates complications and
slowdowns from many lockspaces sharing the same thread.

Signed-off-by: David Teigland

dlm: remove deadlock debug print

2011-07-14T17:31:49+00:00

gfs2 recently began using this feature heavily,
creating more debug output than we want to see.

Signed-off-by: David Teigland

dlm: improve rsb searches

2011-07-12T21:02:09+00:00

By pre-allocating rsb structs before searching the hash
table, they can be inserted immediately.  This avoids
always having to repeat the search when adding the struct
to hash list.

This also adds space to the rsb struct for a max resource
name, so an rsb allocation can be used by any request.
The constant size also allows us to finally use a slab
for the rsb structs.

Signed-off-by: David Teigland

dlm: keep lkbs in idr

2011-07-11T13:43:45+00:00

This is simpler and quicker than the hash table, and
avoids needing to search the hash list for every new
lkid to check if it's used.

Signed-off-by: David Teigland

dlm: fix kmalloc args

2011-07-11T13:40:53+00:00

The gfp and size args were switched.

Signed-off-by: David Teigland

dlm: don't do pointless NULL check, use kzalloc and fix order of arguments

2011-07-11T13:39:42+00:00

In fs/dlm/lock.c in the dlm_scan_waiters() function there are 3 small
issues:

1) There's no need to test the return value of the allocation and do a
memset if is succeedes. Just use kzalloc() to obtain zeroed memory.

2) Since kfree() handles NULL pointers gracefully, the test of
'warned' against NULL before the kfree() after the loop is completely
pointless. Remove it.

3) The arguments to kmalloc() (now kzalloc()) were swapped. Thanks to
Dr. David Alan Gilbert for pointing this out.

Signed-off-by: Jesper Juhl 
Signed-off-by: David Teigland

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm

2011-05-24T22:04:00+00:00

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm:
  dlm: make plock operation killable
  dlm: remove shared message stub for recovery
  dlm: delayed reply message warning
  dlm: Remove superfluous call to recalc_sigpending()