[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>
diff --git a/fs/ocfs2/inode.h b/fs/ocfs2/inode.h
new file mode 100644
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--- /dev/null
+++ b/fs/ocfs2/inode.h
@@ -0,0 +1,145 @@
+/* -*- mode: c; c-basic-offset: 8; -*-
+ * vim: noexpandtab sw=8 ts=8 sts=0:
+ *
+ * inode.h
+ *
+ * Function prototypes
+ *
+ * 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 OCFS2_INODE_H
+#define OCFS2_INODE_H
+
+/* OCFS2 Inode Private Data */
+struct ocfs2_inode_info
+{
+ u64 ip_blkno;
+
+ struct ocfs2_lock_res ip_rw_lockres;
+ struct ocfs2_lock_res ip_meta_lockres;
+ struct ocfs2_lock_res ip_data_lockres;
+
+ /* protects allocation changes on this inode. */
+ struct rw_semaphore ip_alloc_sem;
+
+ /* These fields are protected by ip_lock */
+ spinlock_t ip_lock;
+ u32 ip_open_count;
+ u32 ip_clusters;
+ struct ocfs2_extent_map ip_map;
+ struct list_head ip_io_markers;
+ int ip_orphaned_slot;
+
+ struct semaphore ip_io_sem;
+
+ /* Used by the journalling code to attach an inode to a
+ * handle. These are protected by ip_io_sem in order to lock
+ * out other I/O to the inode until we either commit or
+ * abort. */
+ struct list_head ip_handle_list;
+ struct ocfs2_journal_handle *ip_handle;
+
+ u32 ip_flags; /* see below */
+
+ /* protected by recovery_lock. */
+ struct inode *ip_next_orphan;
+
+ u32 ip_dir_start_lookup;
+
+ /* next two are protected by trans_inc_lock */
+ /* which transaction were we created on? Zero if none. */
+ unsigned long ip_created_trans;
+ /* last transaction we were a part of. */
+ unsigned long ip_last_trans;
+
+ struct ocfs2_caching_info ip_metadata_cache;
+
+ struct inode vfs_inode;
+};
+
+/*
+ * Flags for the ip_flags field
+ */
+/* System file inodes */
+#define OCFS2_INODE_SYSTEM_FILE 0x00000001
+#define OCFS2_INODE_JOURNAL 0x00000002
+#define OCFS2_INODE_BITMAP 0x00000004
+/* This inode has been wiped from disk */
+#define OCFS2_INODE_DELETED 0x00000008
+/* Another node is deleting, so our delete is a nop */
+#define OCFS2_INODE_SKIP_DELETE 0x00000010
+/* Has the inode been orphaned on another node?
+ *
+ * This hints to ocfs2_drop_inode that it should clear i_nlink before
+ * continuing.
+ *
+ * We *only* set this on unlink vote from another node. If the inode
+ * was locally orphaned, then we're sure of the state and don't need
+ * to twiddle i_nlink later - it's either zero or not depending on
+ * whether our unlink succeeded. Otherwise we got this from a node
+ * whose intention was to orphan the inode, however he may have
+ * crashed, failed etc, so we let ocfs2_drop_inode zero the value and
+ * rely on ocfs2_delete_inode to sort things out under the proper
+ * cluster locks.
+ */
+#define OCFS2_INODE_MAYBE_ORPHANED 0x00000020
+/* Does someone have the file open O_DIRECT */
+#define OCFS2_INODE_OPEN_DIRECT 0x00000040
+/* Indicates that the metadata cache should be used as an array. */
+#define OCFS2_INODE_CACHE_INLINE 0x00000080
+
+static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode)
+{
+ return container_of(inode, struct ocfs2_inode_info, vfs_inode);
+}
+
+#define INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags & OCFS2_INODE_JOURNAL)
+#define SET_INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags |= OCFS2_INODE_JOURNAL)
+
+extern kmem_cache_t *ocfs2_inode_cache;
+
+extern struct address_space_operations ocfs2_aops;
+
+struct buffer_head *ocfs2_bread(struct inode *inode, int block,
+ int *err, int reada);
+void ocfs2_clear_inode(struct inode *inode);
+void ocfs2_delete_inode(struct inode *inode);
+void ocfs2_drop_inode(struct inode *inode);
+struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff);
+struct inode *ocfs2_ilookup_for_vote(struct ocfs2_super *osb,
+ u64 blkno,
+ int delete_vote);
+int ocfs2_inode_init_private(struct inode *inode);
+int ocfs2_inode_revalidate(struct dentry *dentry);
+int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
+ int create_ino);
+void ocfs2_read_inode(struct inode *inode);
+void ocfs2_read_inode2(struct inode *inode, void *opaque);
+ssize_t ocfs2_rw_direct(int rw, struct file *filp, char *buf,
+ size_t size, loff_t *offp);
+void ocfs2_sync_blockdev(struct super_block *sb);
+void ocfs2_refresh_inode(struct inode *inode,
+ struct ocfs2_dinode *fe);
+int ocfs2_mark_inode_dirty(struct ocfs2_journal_handle *handle,
+ struct inode *inode,
+ struct buffer_head *bh);
+int ocfs2_aio_read(struct file *file, struct kiocb *req, struct iocb *iocb);
+int ocfs2_aio_write(struct file *file, struct kiocb *req, struct iocb *iocb);
+
+#endif /* OCFS2_INODE_H */