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authorDavid Teigland <teigland@redhat.com>2007-05-18 08:59:31 -0500
committerSteven Whitehouse <swhiteho@redhat.com>2007-07-09 08:22:33 +0100
commit3ae1acf93a21512512f8a78430fcde5992dd208e (patch)
tree878ed3c619530c6acf862ecf663063f66fc47a06 /fs/dlm/lock.h
parent85e86edf951a8a39954c0ba1edbe4a58827dcd5c (diff)
[DLM] add lock timeouts and warnings [2/6]
New features: lock timeouts and time warnings. If the DLM_LKF_TIMEOUT flag is set, then the request/conversion will be canceled after waiting the specified number of centiseconds (specified per lock). This feature is only available for locks requested through libdlm (can be enabled for kernel dlm users if there's a use for it.) If the new DLM_LSFL_TIMEWARN flag is set when creating the lockspace, then a warning message will be sent to userspace (using genetlink) after a request/conversion has been waiting for a given number of centiseconds (configurable per node). The time warnings will be used in the future to do deadlock detection in userspace. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/dlm/lock.h')
-rw-r--r--fs/dlm/lock.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/dlm/lock.h b/fs/dlm/lock.h
index 19403aa08739..6b5b71f0e9dd 100644
--- a/fs/dlm/lock.h
+++ b/fs/dlm/lock.h
@@ -1,7 +1,7 @@
/******************************************************************************
*******************************************************************************
**
-** Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2005-2007 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -26,6 +26,8 @@ int dlm_put_lkb(struct dlm_lkb *lkb);
void dlm_scan_rsbs(struct dlm_ls *ls);
int dlm_lock_recovery_try(struct dlm_ls *ls);
void dlm_unlock_recovery(struct dlm_ls *ls);
+void dlm_scan_timeout(struct dlm_ls *ls);
+void dlm_adjust_timeouts(struct dlm_ls *ls);
int dlm_purge_locks(struct dlm_ls *ls);
void dlm_purge_mstcpy_locks(struct dlm_rsb *r);