linux-toradex.git/fs/dlm, branch v3.12.29

dlm: keep listening connection alive with sctp mode

2014-06-27T08:25:24+00:00

commit 883854c5457a97190f7b0ee20f03bcd9664fc0c2 upstream.

The connection struct with nodeid 0 is the listening socket,
not a connection to another node.  The sctp resend function
was not checking that the nodeid was valid (non-zero), so it
would mistakenly get and resend on the listening connection
when nodeid was zero.

Signed-off-by: Lidong Zhong 
Signed-off-by: David Teigland 
Signed-off-by: Jiri Slaby

dlm: Avoid that dlm_release_lockspace() incorrectly returns -EBUSY

2014-05-05T13:21:59+00:00

commit a97f4a66d8ee4faf0f31cc4ad3f4aa0baef23fc7 upstream.

When dlm_release_lockspace(ls, 1) is invoked on a busy system
immediately after the last dlm_unlock() AST has finished it can occur
that lkb_idr_is_local() is invoked for the unlocked LKB since removal
from ls_lkbidr only occurs after the AST has returned. If that happens
dlm_release_lockspace(ls, 1) will return -EBUSY instead of releasing
the lockspace. Fix this race condition by changing lkb_idr_is_local()
such that it only returns true for LKB's that have not yet been
unlocked.

Signed-off-by: Bart Van Assche 
Signed-off-by: David Teigland 
Signed-off-by: Jiri Slaby

dlm: set zero linger time on sctp socket

2014-04-03T08:32:19+00:00

commit ece35848c1847cdf3dd07954578d3e99238ebbae upstream.

The recovery time for a failed node was taking a long
time because the failed node could not perform the full
shutdown process.  Removing the linger time speeds this
up.  The dlm does not care what happens to messages to
or from the failed node.

Signed-off-by: Dongmao Zhang 
Signed-off-by: David Teigland 
Signed-off-by: Jiri Slaby

dlm: remove signal blocking

2013-08-12T20:22:43+00:00

The signal blocking was incorrect and unnecessary
so just remove it.

Signed-off-by: David Teigland

dlm: WQ_NON_REENTRANT is meaningless and going away

2013-07-30T14:24:24+00:00

dbf2576e37 ("workqueue: make all workqueues non-reentrant") made
WQ_NON_REENTRANT no-op and the flag is going away.  Remove its usages.

This patch doesn't introduce any behavior changes.

Signed-off-by: Tejun Heo 
Signed-off-by: David Teigland

dlm: Avoid LVB truncation

2013-06-26T16:38:02+00:00

For lockspaces with an LVB length above 64 bytes, avoid truncating
the LVB while exchanging it with another node in the cluster.

Signed-off-by: Bart Van Assche 
Signed-off-by: David Teigland

dlm: log an error for unmanaged lockspaces

2013-06-25T17:53:20+00:00

Log an error message if the dlm user daemon exits
before all the lockspaces have been removed.

Signed-off-by: David Teigland

dlm: config: using strlcpy instead of strncpy

2013-06-25T17:53:06+00:00

for NUL terminated string, need alway set '\0' in the end.

Signed-off-by: Zhao Hongjiang 
Signed-off-by: David Teigland

dlm: remove duplicated include from lowcomms.c

2013-06-19T14:52:09+00:00

Remove duplicated include.

Signed-off-by: Wei Yongjun 
Signed-off-by: David Teigland

dlm: disable nagle for SCTP

2013-06-14T18:07:11+00:00

For TCP we disable Nagle and I cannot think of why it would be needed
for SCTP. When disabled it seems to improve dlm_lock operations like it
does for TCP.

Signed-off-by: Mike Christie 
Signed-off-by: David Teigland