364 struct async_chunk {  struct
378 	struct async_chunk chunks[];  argument
381 static noinline int add_async_extent(struct async_chunk *cow,  in add_async_extent()
469 static noinline int compress_file_range(struct async_chunk *async_chunk)  in compress_file_range()  argument
471 	struct inode *inode = async_chunk->inode;  in compress_file_range()
474 	u64 start = async_chunk->start;  in compress_file_range()
475 	u64 end = async_chunk->end;  in compress_file_range()
675 			add_async_extent(async_chunk, start, total_in,  in compress_file_range()
715 	if (page_offset(async_chunk->locked_page) >= start &&  in compress_file_range()
716 	    page_offset(async_chunk->locked_page) <= end)  in compress_file_range()
717 		__set_page_dirty_nobuffers(async_chunk->locked_page);  in compress_file_range()
722 	add_async_extent(async_chunk, start, end - start + 1, 0, NULL, 0,  in compress_file_range()
751 static noinline void submit_compressed_extents(struct async_chunk *async_chunk)  in submit_compressed_extents()  argument
753 	struct inode *inode = async_chunk->inode;  in submit_compressed_extents()
764 	while (!list_empty(&async_chunk->extents)) {  in submit_compressed_extents()
765 		async_extent = list_entry(async_chunk->extents.next,  in submit_compressed_extents()
778 			ret = cow_file_range(inode, async_chunk->locked_page,  in submit_compressed_extents()
799 				unlock_page(async_chunk->locked_page);  in submit_compressed_extents()
881 				    async_chunk->write_flags)) {  in submit_compressed_extents()
1152 	struct async_chunk *async_chunk;  in async_cow_start()  local
1155 	async_chunk = container_of(work, struct async_chunk, work);  in async_cow_start()
1157 	compressed_extents = compress_file_range(async_chunk);  in async_cow_start()
1159 		btrfs_add_delayed_iput(async_chunk->inode);  in async_cow_start()
1160 		async_chunk->inode = NULL;  in async_cow_start()
1169 	struct async_chunk *async_chunk = container_of(work, struct async_chunk,  in async_cow_submit()  local
1174 	nr_pages = (async_chunk->end - async_chunk->start + PAGE_SIZE) >>  in async_cow_submit()
1188 	if (async_chunk->inode)  in async_cow_submit()
1189 		submit_compressed_extents(async_chunk);  in async_cow_submit()
1194 	struct async_chunk *async_chunk;  in async_cow_free()  local
1196 	async_chunk = container_of(work, struct async_chunk, work);  in async_cow_free()
1197 	if (async_chunk->inode)  in async_cow_free()
1198 		btrfs_add_delayed_iput(async_chunk->inode);  in async_cow_free()
1203 	if (atomic_dec_and_test(async_chunk->pending))  in async_cow_free()
1204 		kvfree(async_chunk->pending);  in async_cow_free()
1214 	struct async_chunk *async_chunk;  in cow_file_range_async()  local
1249 	async_chunk = ctx->chunks;  in cow_file_range_async()
1263 		async_chunk[i].pending = &ctx->num_chunks;  in cow_file_range_async()
1264 		async_chunk[i].inode = inode;  in cow_file_range_async()
1265 		async_chunk[i].start = start;  in cow_file_range_async()
1266 		async_chunk[i].end = cur_end;  in cow_file_range_async()
1267 		async_chunk[i].locked_page = locked_page;  in cow_file_range_async()
1268 		async_chunk[i].write_flags = write_flags;  in cow_file_range_async()
1269 		INIT_LIST_HEAD(&async_chunk[i].extents);  in cow_file_range_async()
1271 		btrfs_init_work(&async_chunk[i].work,  in cow_file_range_async()
1279 		btrfs_queue_work(fs_info->delalloc_workers, &async_chunk[i].work);  in cow_file_range_async()