tree 5ab6e0399594df5fa53793ca8f922e0a55f0aca3
parent d7db923ea4990edb5583bf54af868ba687a1bc84
author David Teigland <teigland@redhat.com> 1179496886 -0500
committer Steven Whitehouse <swhiteho@redhat.com> 1183965758 +0100

[DLM] cancel in conversion deadlock [4/6]

When conversion deadlock is detected, cancel the conversion and return
EDEADLK to the application.  This is a new default behavior where before
the dlm would allow the deadlock to exist indefinately.

The DLM_LKF_NODLCKWT flag can now be used in a conversion to prevent the
dlm from performing conversion deadlock detection/cancelation on it.
The DLM_LKF_CONVDEADLK flag can continue to be used as before to tell the
dlm to demote the granted mode of the lock being converted if it gets into
a conversion deadlock.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>