367 struct async_chunk {  struct
382 	struct async_chunk chunks[];  argument
385 static noinline int add_async_extent(struct async_chunk *cow,  in add_async_extent()
474 static noinline int compress_file_range(struct async_chunk *async_chunk)  in compress_file_range()  argument
476 	struct inode *inode = async_chunk->inode;  in compress_file_range()
479 	u64 start = async_chunk->start;  in compress_file_range()
480 	u64 end = async_chunk->end;  in compress_file_range()
688 			add_async_extent(async_chunk, start, total_in,  in compress_file_range()
728 	if (async_chunk->locked_page &&  in compress_file_range()
729 	    (page_offset(async_chunk->locked_page) >= start &&  in compress_file_range()
730 	     page_offset(async_chunk->locked_page)) <= end) {  in compress_file_range()
731 		__set_page_dirty_nobuffers(async_chunk->locked_page);  in compress_file_range()
737 	add_async_extent(async_chunk, start, end - start + 1, 0, NULL, 0,  in compress_file_range()
766 static noinline void submit_compressed_extents(struct async_chunk *async_chunk)  in submit_compressed_extents()  argument
768 	struct btrfs_inode *inode = BTRFS_I(async_chunk->inode);  in submit_compressed_extents()
779 	while (!list_empty(&async_chunk->extents)) {  in submit_compressed_extents()
780 		async_extent = list_entry(async_chunk->extents.next,  in submit_compressed_extents()
793 			ret = cow_file_range(inode, async_chunk->locked_page,  in submit_compressed_extents()
813 			else if (ret && async_chunk->locked_page)  in submit_compressed_extents()
814 				unlock_page(async_chunk->locked_page);  in submit_compressed_extents()
894 				    async_chunk->write_flags,  in submit_compressed_extents()
895 				    async_chunk->blkcg_css)) {  in submit_compressed_extents()
1180 	struct async_chunk *async_chunk;  in async_cow_start()  local
1183 	async_chunk = container_of(work, struct async_chunk, work);  in async_cow_start()
1185 	compressed_extents = compress_file_range(async_chunk);  in async_cow_start()
1187 		btrfs_add_delayed_iput(async_chunk->inode);  in async_cow_start()
1188 		async_chunk->inode = NULL;  in async_cow_start()
1197 	struct async_chunk *async_chunk = container_of(work, struct async_chunk,  in async_cow_submit()  local
1202 	nr_pages = (async_chunk->end - async_chunk->start + PAGE_SIZE) >>  in async_cow_submit()
1216 	if (async_chunk->inode)  in async_cow_submit()
1217 		submit_compressed_extents(async_chunk);  in async_cow_submit()
1222 	struct async_chunk *async_chunk;  in async_cow_free()  local
1224 	async_chunk = container_of(work, struct async_chunk, work);  in async_cow_free()
1225 	if (async_chunk->inode)  in async_cow_free()
1226 		btrfs_add_delayed_iput(async_chunk->inode);  in async_cow_free()
1227 	if (async_chunk->blkcg_css)  in async_cow_free()
1228 		css_put(async_chunk->blkcg_css);  in async_cow_free()
1233 	if (atomic_dec_and_test(async_chunk->pending))  in async_cow_free()
1234 		kvfree(async_chunk->pending);  in async_cow_free()
1246 	struct async_chunk *async_chunk;  in cow_file_range_async()  local
1282 	async_chunk = ctx->chunks;  in cow_file_range_async()
1296 		async_chunk[i].pending = &ctx->num_chunks;  in cow_file_range_async()
1297 		async_chunk[i].inode = &inode->vfs_inode;  in cow_file_range_async()
1298 		async_chunk[i].start = start;  in cow_file_range_async()
1299 		async_chunk[i].end = cur_end;  in cow_file_range_async()
1300 		async_chunk[i].write_flags = write_flags;  in cow_file_range_async()
1301 		INIT_LIST_HEAD(&async_chunk[i].extents);  in cow_file_range_async()
1324 			async_chunk[i].locked_page = locked_page;  in cow_file_range_async()
1327 			async_chunk[i].locked_page = NULL;  in cow_file_range_async()
1332 			async_chunk[i].blkcg_css = blkcg_css;  in cow_file_range_async()
1334 			async_chunk[i].blkcg_css = NULL;  in cow_file_range_async()
1337 		btrfs_init_work(&async_chunk[i].work, async_cow_start,  in cow_file_range_async()
1343 		btrfs_queue_work(fs_info->delalloc_workers, &async_chunk[i].work);  in cow_file_range_async()