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