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When both blocking and completion callbacks are queued for lock, the dlm would always deliver the completion callback (cast) first. In some cases the blocking callback (bast) is queued before the cast, though, and should be delivered first. This patch keeps track of the order in which they were queued and delivers them in that order. This patch also keeps track of the granted mode in the last cast and eliminates the following bast if the bast mode is compatible with the preceding cast mode. This happens when a remotely mastered lock is demoted, e.g. EX->NL, in which case the local node queues a cast immediately after sending the demote message. In this way a cast can be queued for a mode, e.g. NL, that makes an in-transit bast extraneous. Signed-off-by: David Teigland <teigland@redhat.com>
27 lines
874 B
C
27 lines
874 B
C
/******************************************************************************
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*******************************************************************************
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**
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** Copyright (C) 2005-2010 Red Hat, Inc. All rights reserved.
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**
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** This copyrighted material is made available to anyone wishing to use,
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** modify, copy, or redistribute it subject to the terms and conditions
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** of the GNU General Public License v.2.
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**
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*******************************************************************************
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******************************************************************************/
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#ifndef __ASTD_DOT_H__
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#define __ASTD_DOT_H__
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void dlm_add_ast(struct dlm_lkb *lkb, int type, int mode);
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void dlm_del_ast(struct dlm_lkb *lkb);
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void dlm_astd_wake(void);
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int dlm_astd_start(void);
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void dlm_astd_stop(void);
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void dlm_astd_suspend(void);
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void dlm_astd_resume(void);
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#endif
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