forked from luck/tmp_suning_uos_patched
fc881fa0d5
The in-memory slot map uses the same magic as the on-disk one. There is a special value to mark a slot as invalid. It relies on the size of certain types and so on. Write a new in-memory map that keeps validity as a separate field. Outside of the I/O functions, OCFS2_INVALID_SLOT now means what it is supposed to. It also is no longer tied to the type size. This also means that only the I/O functions refer to 16bit quantities. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* slotmap.h
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*
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* description here
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*
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* Copyright (C) 2002, 2004 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef SLOTMAP_H
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#define SLOTMAP_H
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int ocfs2_init_slot_info(struct ocfs2_super *osb);
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void ocfs2_free_slot_info(struct ocfs2_super *osb);
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int ocfs2_find_slot(struct ocfs2_super *osb);
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void ocfs2_put_slot(struct ocfs2_super *osb);
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int ocfs2_refresh_slot_info(struct ocfs2_super *osb);
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int ocfs2_node_num_to_slot(struct ocfs2_super *osb, unsigned int node_num);
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int ocfs2_slot_to_node_num_locked(struct ocfs2_super *osb, int slot_num,
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unsigned int *node_num);
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int ocfs2_clear_slot(struct ocfs2_super *osb, int slot_num);
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#endif
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