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authorMark Fasheh <mark.fasheh@oracle.com>2005-12-15 14:31:24 -0800
committerJoel Becker <joel.becker@oracle.com>2006-01-03 11:45:47 -0800
commitccd979bdbce9fba8412beb3f1de68a9d0171b12c (patch)
treec50ed941849ce06ccadd4ce27599b3ef9fdbe2ae /fs/ocfs2/slot_map.h
parent8df08c89c668e1bd922a053fdb5ba1fadbecbb38 (diff)
[PATCH] OCFS2: The Second Oracle Cluster Filesystem
The OCFS2 file system module. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Diffstat (limited to 'fs/ocfs2/slot_map.h')
-rw-r--r--fs/ocfs2/slot_map.h66
1 files changed, 66 insertions, 0 deletions
diff --git a/fs/ocfs2/slot_map.h b/fs/ocfs2/slot_map.h
new file mode 100644
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+++ b/fs/ocfs2/slot_map.h
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+/* -*- mode: c; c-basic-offset: 8; -*-
+ * vim: noexpandtab sw=8 ts=8 sts=0:
+ *
+ * slotmap.h
+ *
+ * description here
+ *
+ * Copyright (C) 2002, 2004 Oracle. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ */
+
+
+#ifndef SLOTMAP_H
+#define SLOTMAP_H
+
+struct ocfs2_slot_info {
+ spinlock_t si_lock;
+
+ struct inode *si_inode;
+ struct buffer_head *si_bh;
+ unsigned int si_num_slots;
+ unsigned int si_size;
+ s16 si_global_node_nums[OCFS2_MAX_SLOTS];
+};
+
+int ocfs2_init_slot_info(struct ocfs2_super *osb);
+void ocfs2_free_slot_info(struct ocfs2_slot_info *si);
+
+int ocfs2_find_slot(struct ocfs2_super *osb);
+void ocfs2_put_slot(struct ocfs2_super *osb);
+
+void ocfs2_update_slot_info(struct ocfs2_slot_info *si);
+int ocfs2_update_disk_slots(struct ocfs2_super *osb,
+ struct ocfs2_slot_info *si);
+
+s16 ocfs2_node_num_to_slot(struct ocfs2_slot_info *si,
+ s16 global);
+void ocfs2_clear_slot(struct ocfs2_slot_info *si,
+ s16 slot_num);
+
+void ocfs2_populate_mounted_map(struct ocfs2_super *osb);
+
+static inline int ocfs2_is_empty_slot(struct ocfs2_slot_info *si,
+ int slot_num)
+{
+ BUG_ON(slot_num == OCFS2_INVALID_SLOT);
+ assert_spin_locked(&si->si_lock);
+
+ return si->si_global_node_nums[slot_num] == OCFS2_INVALID_SLOT;
+}
+
+#endif