1 files changed, 68 insertions, 0 deletions

diff --git a/fs/xfs/xfs_aops.h b/fs/xfs/xfs_aops.h
new file mode 100644
index 000000000000..71f721e1a71f
--- /dev/null
+++ b/fs/xfs/xfs_aops.h
@@ -0,0 +1,68 @@
+/*
+ * 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__ */