Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #ifndef __BMAP_DOT_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #define __BMAP_DOT_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/iomap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "inode.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) struct inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) struct gfs2_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) struct page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  * gfs2_write_calc_reserv - calculate number of blocks needed to write to a file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  * @ip: the file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  * @len: the number of bytes to be written to the file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)  * @data_blocks: returns the number of data blocks required
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)  * @ind_blocks: returns the number of indirect blocks required
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static inline void gfs2_write_calc_reserv(const struct gfs2_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 					  unsigned int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 					  unsigned int *data_blocks,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 					  unsigned int *ind_blocks)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	unsigned int tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	BUG_ON(gfs2_is_dir(ip));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	*data_blocks = (len >> sdp->sd_sb.sb_bsize_shift) + 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	*ind_blocks = 3 * (sdp->sd_max_height - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	for (tmp = *data_blocks; tmp > sdp->sd_diptrs;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 		tmp = DIV_ROUND_UP(tmp, sdp->sd_inptrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 		*ind_blocks += tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) extern const struct iomap_ops gfs2_iomap_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) extern const struct iomap_writeback_ops gfs2_writeback_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) extern int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) extern int gfs2_block_map(struct inode *inode, sector_t lblock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 			  struct buffer_head *bh, int create);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) extern int gfs2_iomap_get_alloc(struct inode *inode, loff_t pos, loff_t length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 				struct iomap *iomap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) extern int gfs2_extent_map(struct inode *inode, u64 lblock, int *new,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 			   u64 *dblock, unsigned *extlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) extern int gfs2_setattr_size(struct inode *inode, u64 size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) extern void gfs2_trim_blocks(struct inode *inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) extern int gfs2_truncatei_resume(struct gfs2_inode *ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) extern int gfs2_file_dealloc(struct gfs2_inode *ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) extern int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 				     unsigned int len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) extern int gfs2_map_journal_extents(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) extern void gfs2_free_journal_extents(struct gfs2_jdesc *jd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) extern int __gfs2_punch_hole(struct file *file, loff_t offset, loff_t length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) extern int gfs2_lblk_to_dblk(struct inode *inode, u32 lblock, u64 *dblock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #endif /* __BMAP_DOT_H__ */