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authorLen Brown <len.brown@intel.com>2006-01-07 03:50:18 -0500
committerLen Brown <len.brown@intel.com>2006-01-07 03:50:18 -0500
commited03f430cdc8c802652467e9097606fedc2c7abc (patch)
tree30941ec1e6f93e99358fefe18175e5dd800a4379 /fs/ocfs2/extent_map.h
parented349a8a0a780ed27e2a765f16cee54d9b63bfee (diff)
parent6f957eaf79356a32e838f5f262ee9a60544b1d5b (diff)
downloadop-kernel-dev-ed03f430cdc8c802652467e9097606fedc2c7abc.zip
op-kernel-dev-ed03f430cdc8c802652467e9097606fedc2c7abc.tar.gz
Pull pnpacpi into acpica branch
Diffstat (limited to 'fs/ocfs2/extent_map.h')
-rw-r--r--fs/ocfs2/extent_map.h46
1 files changed, 46 insertions, 0 deletions
diff --git a/fs/ocfs2/extent_map.h b/fs/ocfs2/extent_map.h
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+/* -*- mode: c; c-basic-offset: 8; -*-
+ * vim: noexpandtab sw=8 ts=8 sts=0:
+ *
+ * extent_map.h
+ *
+ * In-memory file extent mappings for OCFS2.
+ *
+ * Copyright (C) 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, version 2, as published by the Free Software Foundation.
+ *
+ * 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 _EXTENT_MAP_H
+#define _EXTENT_MAP_H
+
+int init_ocfs2_extent_maps(void);
+void exit_ocfs2_extent_maps(void);
+
+/*
+ * EVERY CALL here except _init, _trunc, and _drop expects alloc_sem
+ * to be held. The allocation cannot change at all while the map is
+ * in the process of being updated.
+ */
+int ocfs2_extent_map_init(struct inode *inode);
+int ocfs2_extent_map_append(struct inode *inode,
+ struct ocfs2_extent_rec *rec,
+ u32 new_clusters);
+int ocfs2_extent_map_get_blocks(struct inode *inode,
+ u64 v_blkno, int count,
+ u64 *p_blkno, int *ret_count);
+int ocfs2_extent_map_drop(struct inode *inode, u32 new_clusters);
+int ocfs2_extent_map_trunc(struct inode *inode, u32 new_clusters);
+
+#endif /* _EXTENT_MAP_H */
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