26 				     struct erofs_map_blocks *map,  in erofs_map_blocks_flatmode()  argument
31 	u64 offset = map->m_la;  in erofs_map_blocks_flatmode()
35 	trace_erofs_map_blocks_flatmode_enter(inode, map, flags);  in erofs_map_blocks_flatmode()
41 	map->m_flags = EROFS_MAP_MAPPED;  in erofs_map_blocks_flatmode()
44 		map->m_pa = blknr_to_addr(vi->raw_blkaddr) + map->m_la;  in erofs_map_blocks_flatmode()
45 		map->m_plen = blknr_to_addr(lastblk) - offset;  in erofs_map_blocks_flatmode()
50 		map->m_pa = iloc(sbi, vi->nid) + vi->inode_isize +  in erofs_map_blocks_flatmode()
51 			vi->xattr_isize + erofs_blkoff(map->m_la);  in erofs_map_blocks_flatmode()
52 		map->m_plen = inode->i_size - offset;  in erofs_map_blocks_flatmode()
55 		if (erofs_blkoff(map->m_pa) + map->m_plen > PAGE_SIZE) {  in erofs_map_blocks_flatmode()
64 		map->m_flags |= EROFS_MAP_META;  in erofs_map_blocks_flatmode()
68 			  vi->nid, inode->i_size, map->m_la);  in erofs_map_blocks_flatmode()
74 	map->m_llen = map->m_plen;  in erofs_map_blocks_flatmode()
76 	trace_erofs_map_blocks_flatmode_exit(inode, map, flags, 0);  in erofs_map_blocks_flatmode()
81 			    struct erofs_map_blocks *map, int flags)  in erofs_map_blocks()  argument
92 	map->m_deviceid = 0;  in erofs_map_blocks()
93 	if (map->m_la >= inode->i_size) {  in erofs_map_blocks()
95 		map->m_flags = 0;  in erofs_map_blocks()
96 		map->m_plen = 0;  in erofs_map_blocks()
101 		return erofs_map_blocks_flatmode(inode, map, flags);  in erofs_map_blocks()
108 	chunknr = map->m_la >> vi->chunkbits;  in erofs_map_blocks()
116 	map->m_la = chunknr << vi->chunkbits;  in erofs_map_blocks()
117 	map->m_plen = min_t(erofs_off_t, 1UL << vi->chunkbits,  in erofs_map_blocks()
118 			    roundup(inode->i_size - map->m_la, EROFS_BLKSIZ));  in erofs_map_blocks()
125 			map->m_flags = 0;  in erofs_map_blocks()
127 			map->m_pa = blknr_to_addr(le32_to_cpu(*blkaddr));  in erofs_map_blocks()
128 			map->m_flags = EROFS_MAP_MAPPED;  in erofs_map_blocks()
136 		map->m_flags = 0;  in erofs_map_blocks()
139 		map->m_deviceid = le16_to_cpu(idx->device_id) &  in erofs_map_blocks()
141 		map->m_pa = blknr_to_addr(le32_to_cpu(idx->blkaddr));  in erofs_map_blocks()
142 		map->m_flags = EROFS_MAP_MAPPED;  in erofs_map_blocks()
149 	map->m_llen = map->m_plen;  in erofs_map_blocks()
153 int erofs_map_dev(struct super_block *sb, struct erofs_map_dev *map)  in erofs_map_dev()  argument
160 	map->m_bdev = sb->s_bdev;  in erofs_map_dev()
161 	map->m_daxdev = EROFS_SB(sb)->dax_dev;  in erofs_map_dev()
163 	if (map->m_deviceid) {  in erofs_map_dev()
165 		dif = idr_find(&devs->tree, map->m_deviceid - 1);  in erofs_map_dev()
170 		map->m_bdev = dif->bdev;  in erofs_map_dev()
171 		map->m_daxdev = dif->dax_dev;  in erofs_map_dev()
183 			if (map->m_pa >= startoff &&  in erofs_map_dev()
184 			    map->m_pa < startoff + length) {  in erofs_map_dev()
185 				map->m_pa -= startoff;  in erofs_map_dev()
186 				map->m_bdev = dif->bdev;  in erofs_map_dev()
187 				map->m_daxdev = dif->dax_dev;  in erofs_map_dev()
200 	struct erofs_map_blocks map;  in erofs_iomap_begin()  local
203 	map.m_la = offset;  in erofs_iomap_begin()
204 	map.m_llen = length;  in erofs_iomap_begin()
206 	ret = erofs_map_blocks(inode, &map, EROFS_GET_BLOCKS_RAW);  in erofs_iomap_begin()
211 		.m_deviceid = map.m_deviceid,  in erofs_iomap_begin()
212 		.m_pa = map.m_pa,  in erofs_iomap_begin()
220 	iomap->offset = map.m_la;  in erofs_iomap_begin()
221 	iomap->length = map.m_llen;  in erofs_iomap_begin()
225 	if (!(map.m_flags & EROFS_MAP_MAPPED)) {  in erofs_iomap_begin()
233 	if (map.m_flags & EROFS_MAP_META) {  in erofs_iomap_begin()