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-rw-r--r--fs/ocfs2/aops.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/fs/ocfs2/aops.h b/fs/ocfs2/aops.h
new file mode 100644
index 000000000..3a520117f
--- /dev/null
+++ b/fs/ocfs2/aops.h
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2002, 2004, 2005 Oracle. All rights reserved.
+ */
+
+#ifndef OCFS2_AOPS_H
+#define OCFS2_AOPS_H
+
+#include <linux/fs.h>
+
+handle_t *ocfs2_start_walk_page_trans(struct inode *inode,
+ struct page *page,
+ unsigned from,
+ unsigned to);
+
+int ocfs2_map_page_blocks(struct page *page, u64 *p_blkno,
+ struct inode *inode, unsigned int from,
+ unsigned int to, int new);
+
+void ocfs2_unlock_and_free_pages(struct page **pages, int num_pages);
+
+int walk_page_buffers( handle_t *handle,
+ struct buffer_head *head,
+ unsigned from,
+ unsigned to,
+ int *partial,
+ int (*fn)( handle_t *handle,
+ struct buffer_head *bh));
+
+int ocfs2_write_end_nolock(struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned copied, void *fsdata);
+
+typedef enum {
+ OCFS2_WRITE_BUFFER = 0,
+ OCFS2_WRITE_DIRECT,
+ OCFS2_WRITE_MMAP,
+} ocfs2_write_type_t;
+
+int ocfs2_write_begin_nolock(struct address_space *mapping,
+ loff_t pos, unsigned len, ocfs2_write_type_t type,
+ struct page **pagep, void **fsdata,
+ struct buffer_head *di_bh, struct page *mmap_page);
+
+int ocfs2_read_inline_data(struct inode *inode, struct page *page,
+ struct buffer_head *di_bh);
+int ocfs2_size_fits_inline_data(struct buffer_head *di_bh, u64 new_size);
+
+int ocfs2_get_block(struct inode *inode, sector_t iblock,
+ struct buffer_head *bh_result, int create);
+/* all ocfs2_dio_end_io()'s fault */
+#define ocfs2_iocb_is_rw_locked(iocb) \
+ test_bit(0, (unsigned long *)&iocb->private)
+static inline void ocfs2_iocb_set_rw_locked(struct kiocb *iocb, int level)
+{
+ set_bit(0, (unsigned long *)&iocb->private);
+ if (level)
+ set_bit(1, (unsigned long *)&iocb->private);
+ else
+ clear_bit(1, (unsigned long *)&iocb->private);
+}
+
+/*
+ * Using a named enum representing lock types in terms of #N bit stored in
+ * iocb->private, which is going to be used for communication between
+ * ocfs2_dio_end_io() and ocfs2_file_write/read_iter().
+ */
+enum ocfs2_iocb_lock_bits {
+ OCFS2_IOCB_RW_LOCK = 0,
+ OCFS2_IOCB_RW_LOCK_LEVEL,
+ OCFS2_IOCB_NUM_LOCKS
+};
+
+#define ocfs2_iocb_clear_rw_locked(iocb) \
+ clear_bit(OCFS2_IOCB_RW_LOCK, (unsigned long *)&iocb->private)
+#define ocfs2_iocb_rw_locked_level(iocb) \
+ test_bit(OCFS2_IOCB_RW_LOCK_LEVEL, (unsigned long *)&iocb->private)
+
+#endif /* OCFS2_FILE_H */