From c85d65e91430db94ae9ce0cf38b56e496658b642 Mon Sep 17 00:00:00 2001 From: David Teigland Date: Fri, 18 May 2007 09:01:26 -0500 Subject: [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 Signed-off-by: Steven Whitehouse --- include/linux/dlm.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux/dlm.h') diff --git a/include/linux/dlm.h b/include/linux/dlm.h index 975f17d8aa5..5227a9594f9 100644 --- a/include/linux/dlm.h +++ b/include/linux/dlm.h @@ -85,7 +85,11 @@ * Only relevant to locks originating in userspace. A persistent lock will not * be removed if the process holding the lock exits. * - * DLM_LKF_NODLKWT + * DLM_LKF_NODLCKWT + * + * Do not cancel the lock if it gets into conversion deadlock. + * Exclude this lock from being monitored due to DLM_LSFL_TIMEWARN. + * * DLM_LKF_NODLCKBLK * * net yet implemented -- cgit v1.2.3