Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /* -*- mode: c; c-basic-offset: 8; -*-
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * vim: noexpandtab sw=8 ts=8 sts=0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (C) 2002, 2004, 2005 Oracle.  All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #ifndef OCFS2_AOPS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #define OCFS2_AOPS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) handle_t *ocfs2_start_walk_page_trans(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 							 struct page *page,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 							 unsigned from,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 							 unsigned to);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) int ocfs2_map_page_blocks(struct page *page, u64 *p_blkno,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 			  struct inode *inode, unsigned int from,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 			  unsigned int to, int new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) void ocfs2_unlock_and_free_pages(struct page **pages, int num_pages);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) int walk_page_buffers(	handle_t *handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 			struct buffer_head *head,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 			unsigned from,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 			unsigned to,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 			int *partial,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 			int (*fn)(	handle_t *handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 					struct buffer_head *bh));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) int ocfs2_write_end_nolock(struct address_space *mapping,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 			   loff_t pos, unsigned len, unsigned copied, void *fsdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) typedef enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	OCFS2_WRITE_BUFFER = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	OCFS2_WRITE_DIRECT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	OCFS2_WRITE_MMAP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) } ocfs2_write_type_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) int ocfs2_write_begin_nolock(struct address_space *mapping,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 			     loff_t pos, unsigned len, ocfs2_write_type_t type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 			     struct page **pagep, void **fsdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 			     struct buffer_head *di_bh, struct page *mmap_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int ocfs2_read_inline_data(struct inode *inode, struct page *page,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 			   struct buffer_head *di_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) int ocfs2_size_fits_inline_data(struct buffer_head *di_bh, u64 new_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) int ocfs2_get_block(struct inode *inode, sector_t iblock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 		    struct buffer_head *bh_result, int create);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /* all ocfs2_dio_end_io()'s fault */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define ocfs2_iocb_is_rw_locked(iocb) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	test_bit(0, (unsigned long *)&iocb->private)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static inline void ocfs2_iocb_set_rw_locked(struct kiocb *iocb, int level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	set_bit(0, (unsigned long *)&iocb->private);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	if (level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 		set_bit(1, (unsigned long *)&iocb->private);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 		clear_bit(1, (unsigned long *)&iocb->private);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)  * Using a named enum representing lock types in terms of #N bit stored in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)  * iocb->private, which is going to be used for communication between
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)  * ocfs2_dio_end_io() and ocfs2_file_write/read_iter().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) enum ocfs2_iocb_lock_bits {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	OCFS2_IOCB_RW_LOCK = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	OCFS2_IOCB_RW_LOCK_LEVEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	OCFS2_IOCB_NUM_LOCKS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define ocfs2_iocb_clear_rw_locked(iocb) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 	clear_bit(OCFS2_IOCB_RW_LOCK, (unsigned long *)&iocb->private)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define ocfs2_iocb_rw_locked_level(iocb) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 	test_bit(OCFS2_IOCB_RW_LOCK_LEVEL, (unsigned long *)&iocb->private)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #endif /* OCFS2_FILE_H */