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-rw-r--r--fs/xfs/xfs_iomap.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/fs/xfs/xfs_iomap.h b/fs/xfs/xfs_iomap.h
new file mode 100644
index 000000000..c782e8c04
--- /dev/null
+++ b/fs/xfs/xfs_iomap.h
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2003-2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
+ */
+#ifndef __XFS_IOMAP_H__
+#define __XFS_IOMAP_H__
+
+#include <linux/iomap.h>
+
+struct xfs_inode;
+struct xfs_bmbt_irec;
+
+int xfs_iomap_write_direct(struct xfs_inode *ip, xfs_fileoff_t offset_fsb,
+ xfs_fileoff_t count_fsb, unsigned int flags,
+ struct xfs_bmbt_irec *imap);
+int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t, bool);
+xfs_fileoff_t xfs_iomap_eof_align_last_fsb(struct xfs_inode *ip,
+ xfs_fileoff_t end_fsb);
+
+int xfs_bmbt_to_iomap(struct xfs_inode *ip, struct iomap *iomap,
+ struct xfs_bmbt_irec *imap, unsigned int mapping_flags,
+ u16 iomap_flags);
+
+int xfs_zero_range(struct xfs_inode *ip, loff_t pos, loff_t len,
+ bool *did_zero);
+int xfs_truncate_page(struct xfs_inode *ip, loff_t pos, bool *did_zero);
+
+static inline xfs_filblks_t
+xfs_aligned_fsb_count(
+ xfs_fileoff_t offset_fsb,
+ xfs_filblks_t count_fsb,
+ xfs_extlen_t extsz)
+{
+ if (extsz) {
+ xfs_extlen_t align;
+
+ div_u64_rem(offset_fsb, extsz, &align);
+ if (align)
+ count_fsb += align;
+ div_u64_rem(count_fsb, extsz, &align);
+ if (align)
+ count_fsb += extsz - align;
+ }
+
+ return count_fsb;
+}
+
+extern const struct iomap_ops xfs_buffered_write_iomap_ops;
+extern const struct iomap_ops xfs_direct_write_iomap_ops;
+extern const struct iomap_ops xfs_read_iomap_ops;
+extern const struct iomap_ops xfs_seek_iomap_ops;
+extern const struct iomap_ops xfs_xattr_iomap_ops;
+extern const struct iomap_ops xfs_dax_write_iomap_ops;
+
+#endif /* __XFS_IOMAP_H__*/