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diff --git a/fs/xfs/xfs_aops.h b/fs/xfs/xfs_aops.h
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+/*
+ * Copyright (c) 2005-2006 Silicon Graphics, Inc.
+ * 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.
+ *
+ * This program is distributed in the hope that it would 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 the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef __XFS_AOPS_H__
+#define __XFS_AOPS_H__
+
+extern struct workqueue_struct *xfsdatad_workqueue;
+extern struct workqueue_struct *xfsconvertd_workqueue;
+extern mempool_t *xfs_ioend_pool;
+
+/*
+ * Types of I/O for bmap clustering and I/O completion tracking.
+ */
+enum {
+ IO_DIRECT = 0, /* special case for direct I/O ioends */
+ IO_DELALLOC, /* mapping covers delalloc region */
+ IO_UNWRITTEN, /* mapping covers allocated but uninitialized data */
+ IO_OVERWRITE, /* mapping covers already allocated extent */
+};
+
+#define XFS_IO_TYPES \
+ { 0, "" }, \
+ { IO_DELALLOC, "delalloc" }, \
+ { IO_UNWRITTEN, "unwritten" }, \
+ { IO_OVERWRITE, "overwrite" }
+
+/*
+ * xfs_ioend struct manages large extent writes for XFS.
+ * It can manage several multi-page bio's at once.
+ */
+typedef struct xfs_ioend {
+ struct xfs_ioend *io_list; /* next ioend in chain */
+ unsigned int io_type; /* delalloc / unwritten */
+ int io_error; /* I/O error code */
+ atomic_t io_remaining; /* hold count */
+ struct inode *io_inode; /* file being written to */
+ struct buffer_head *io_buffer_head;/* buffer linked list head */
+ struct buffer_head *io_buffer_tail;/* buffer linked list tail */
+ size_t io_size; /* size of the extent */
+ xfs_off_t io_offset; /* offset in the file */
+ struct work_struct io_work; /* xfsdatad work queue */
+ struct kiocb *io_iocb;
+ int io_result;
+} xfs_ioend_t;
+
+extern const struct address_space_operations xfs_address_space_operations;
+extern int xfs_get_blocks(struct inode *, sector_t, struct buffer_head *, int);
+
+extern void xfs_ioend_init(void);
+extern void xfs_ioend_wait(struct xfs_inode *);
+
+extern void xfs_count_page_state(struct page *, int *, int *);
+
+#endif /* __XFS_AOPS_H__ */