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) /* -*- 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)  * extent_map.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * In-memory file extent mappings for OCFS2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * Copyright (C) 2004 Oracle.  All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #ifndef _EXTENT_MAP_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define _EXTENT_MAP_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) struct ocfs2_extent_map_item {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	unsigned int			ei_cpos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	unsigned int			ei_phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	unsigned int			ei_clusters;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	unsigned int			ei_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	struct list_head		ei_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define OCFS2_MAX_EXTENT_MAP_ITEMS			3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct ocfs2_extent_map {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	unsigned int			em_num_items;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	struct list_head		em_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) void ocfs2_extent_map_init(struct inode *inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) void ocfs2_extent_map_trunc(struct inode *inode, unsigned int cluster);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) void ocfs2_extent_map_insert_rec(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 				 struct ocfs2_extent_rec *rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) int ocfs2_get_clusters(struct inode *inode, u32 v_cluster, u32 *p_cluster,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		       u32 *num_clusters, unsigned int *extent_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) int ocfs2_extent_map_get_blocks(struct inode *inode, u64 v_blkno, u64 *p_blkno,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 				u64 *ret_count, unsigned int *extent_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) int ocfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 		 u64 map_start, u64 map_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) int ocfs2_overwrite_io(struct inode *inode, struct buffer_head *di_bh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 		       u64 map_start, u64 map_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int ocfs2_seek_data_hole_offset(struct file *file, loff_t *offset, int origin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) int ocfs2_xattr_get_clusters(struct inode *inode, u32 v_cluster,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 			     u32 *p_cluster, u32 *num_clusters,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 			     struct ocfs2_extent_list *el,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 			     unsigned int *extent_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) int ocfs2_read_virt_blocks(struct inode *inode, u64 v_block, int nr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 			   struct buffer_head *bhs[], int flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 			   int (*validate)(struct super_block *sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 					   struct buffer_head *bh));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) int ocfs2_figure_hole_clusters(struct ocfs2_caching_info *ci,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 			       struct ocfs2_extent_list *el,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 			       struct buffer_head *eb_bh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 			       u32 v_cluster,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 			       u32 *num_clusters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static inline int ocfs2_read_virt_block(struct inode *inode, u64 v_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 					struct buffer_head **bh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 					int (*validate)(struct super_block *sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 							struct buffer_head *bh))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 	int status = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 	if (bh == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 		printk("ocfs2: bh == NULL\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 		status = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 		goto bail;
^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) 	status = ocfs2_read_virt_blocks(inode, v_block, 1, bh, 0, validate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) bail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 	return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #endif  /* _EXTENT_MAP_H */