76 			      struct fiemap_cache *cache)  in flush_fiemap_cache()  argument
78 	for (int i = 0; i < cache->entries_pos; i++) {  in flush_fiemap_cache()
79 		struct btrfs_fiemap_entry *entry = &cache->entries[i];  in flush_fiemap_cache()
92 	cache->entries_pos = 0;  in flush_fiemap_cache()
108 				struct fiemap_cache *cache,  in emit_fiemap_extent()  argument
117 	if (!cache->cached)  in emit_fiemap_extent()
152 	cache_end = cache->offset + cache->len;  in emit_fiemap_extent()
154 		if (offset == cache->offset) {  in emit_fiemap_extent()
163 		} else if (offset > cache->offset) {  in emit_fiemap_extent()
176 			cache->len = offset - cache->offset;  in emit_fiemap_extent()
231 	if (cache->offset + cache->len  == offset &&  in emit_fiemap_extent()
232 	    cache->phys + cache->len == phys  &&  in emit_fiemap_extent()
233 	    cache->flags == flags) {  in emit_fiemap_extent()
234 		cache->len += len;  in emit_fiemap_extent()
241 	if (cache->entries_pos == cache->entries_size) {  in emit_fiemap_extent()
250 		entry = &cache->entries[cache->entries_size - 1];  in emit_fiemap_extent()
251 		cache->next_search_offset = entry->offset + entry->len;  in emit_fiemap_extent()
252 		cache->cached = false;  in emit_fiemap_extent()
257 	entry = &cache->entries[cache->entries_pos];  in emit_fiemap_extent()
258 	entry->offset = cache->offset;  in emit_fiemap_extent()
259 	entry->phys = cache->phys;  in emit_fiemap_extent()
260 	entry->len = cache->len;  in emit_fiemap_extent()
261 	entry->flags = cache->flags;  in emit_fiemap_extent()
262 	cache->entries_pos++;  in emit_fiemap_extent()
263 	cache->extents_mapped++;  in emit_fiemap_extent()
265 	if (cache->extents_mapped == fieinfo->fi_extents_max) {  in emit_fiemap_extent()
266 		cache->cached = false;  in emit_fiemap_extent()
270 	cache->cached = true;  in emit_fiemap_extent()
271 	cache->offset = offset;  in emit_fiemap_extent()
272 	cache->phys = phys;  in emit_fiemap_extent()
273 	cache->len = len;  in emit_fiemap_extent()
274 	cache->flags = flags;  in emit_fiemap_extent()
291 				  struct fiemap_cache *cache)  in emit_last_fiemap_cache()  argument
295 	if (!cache->cached)  in emit_last_fiemap_cache()
298 	ret = fiemap_fill_next_extent(fieinfo, cache->offset, cache->phys,  in emit_last_fiemap_cache()
299 				      cache->len, cache->flags);  in emit_last_fiemap_cache()
300 	cache->cached = false;  in emit_last_fiemap_cache()
438 			       struct fiemap_cache *cache,  in fiemap_process_hole()  argument
497 			ret = emit_fiemap_extent(fieinfo, cache, prealloc_start,  in fiemap_process_hole()
505 		ret = emit_fiemap_extent(fieinfo, cache, delalloc_start, 0,  in fiemap_process_hole()
544 		ret = emit_fiemap_extent(fieinfo, cache, prealloc_start,  in fiemap_process_hole()
638 	struct fiemap_cache cache = { 0 };  in extent_fiemap()  local
648 	cache.entries_size = PAGE_SIZE / sizeof(struct btrfs_fiemap_entry);  in extent_fiemap()
649 	cache.entries = kmalloc_objs(struct btrfs_fiemap_entry,  in extent_fiemap()
650 				     cache.entries_size);  in extent_fiemap()
653 	if (!cache.entries || !backref_ctx || !path) {  in extent_fiemap()
715 			ret = fiemap_process_hole(inode, fieinfo, &cache,  in extent_fiemap()
753 			ret = emit_fiemap_extent(fieinfo, &cache, key.offset, 0,  in extent_fiemap()
756 			ret = fiemap_process_hole(inode, fieinfo, &cache,  in extent_fiemap()
764 			ret = fiemap_process_hole(inode, fieinfo, &cache,  in extent_fiemap()
781 			ret = emit_fiemap_extent(fieinfo, &cache, key.offset,  in extent_fiemap()
813 		ret = fiemap_process_hole(inode, fieinfo, &cache,  in extent_fiemap()
821 	if (cache.cached && cache.offset + cache.len >= last_extent_end) {  in extent_fiemap()
836 				cache.flags |= FIEMAP_EXTENT_LAST;  in extent_fiemap()
838 			cache.flags |= FIEMAP_EXTENT_LAST;  in extent_fiemap()
847 		ret = flush_fiemap_cache(fieinfo, &cache);  in extent_fiemap()
850 		len -= cache.next_search_offset - start;  in extent_fiemap()
851 		start = cache.next_search_offset;  in extent_fiemap()
867 	ret = flush_fiemap_cache(fieinfo, &cache);  in extent_fiemap()
871 	ret = emit_last_fiemap_cache(fieinfo, &cache);  in extent_fiemap()
874 	kfree(cache.entries);  in extent_fiemap()