325 struct async_extent {  struct
352 	struct async_extent *async_extent;  in add_async_extent()  argument
354 	async_extent = kmalloc(sizeof(*async_extent), GFP_NOFS);  in add_async_extent()
355 	BUG_ON(!async_extent); /* -ENOMEM */  in add_async_extent()
356 	async_extent->start = start;  in add_async_extent()
357 	async_extent->ram_size = ram_size;  in add_async_extent()
358 	async_extent->compressed_size = compressed_size;  in add_async_extent()
359 	async_extent->pages = pages;  in add_async_extent()
360 	async_extent->nr_pages = nr_pages;  in add_async_extent()
361 	async_extent->compress_type = compress_type;  in add_async_extent()
362 	list_add_tail(&async_extent->list, &cow->extents);  in add_async_extent()
652 static void free_async_extent_pages(struct async_extent *async_extent)  in free_async_extent_pages()  argument
656 	if (!async_extent->pages)  in free_async_extent_pages()
659 	for (i = 0; i < async_extent->nr_pages; i++) {  in free_async_extent_pages()
660 		WARN_ON(async_extent->pages[i]->mapping);  in free_async_extent_pages()
661 		page_cache_release(async_extent->pages[i]);  in free_async_extent_pages()
663 	kfree(async_extent->pages);  in free_async_extent_pages()
664 	async_extent->nr_pages = 0;  in free_async_extent_pages()
665 	async_extent->pages = NULL;  in free_async_extent_pages()
677 	struct async_extent *async_extent;  in submit_compressed_extents()  local
688 		async_extent = list_entry(async_cow->extents.next,  in submit_compressed_extents()
689 					  struct async_extent, list);  in submit_compressed_extents()
690 		list_del(&async_extent->list);  in submit_compressed_extents()
696 		if (!async_extent->pages) {  in submit_compressed_extents()
700 			lock_extent(io_tree, async_extent->start,  in submit_compressed_extents()
701 					 async_extent->start +  in submit_compressed_extents()
702 					 async_extent->ram_size - 1);  in submit_compressed_extents()
706 					     async_extent->start,  in submit_compressed_extents()
707 					     async_extent->start +  in submit_compressed_extents()
708 					     async_extent->ram_size - 1,  in submit_compressed_extents()
721 						  inode, async_extent->start,  in submit_compressed_extents()
722 						  async_extent->start +  in submit_compressed_extents()
723 						  async_extent->ram_size - 1,  in submit_compressed_extents()
728 			kfree(async_extent);  in submit_compressed_extents()
733 		lock_extent(io_tree, async_extent->start,  in submit_compressed_extents()
734 			    async_extent->start + async_extent->ram_size - 1);  in submit_compressed_extents()
737 					   async_extent->compressed_size,  in submit_compressed_extents()
738 					   async_extent->compressed_size,  in submit_compressed_extents()
741 			free_async_extent_pages(async_extent);  in submit_compressed_extents()
744 				unlock_extent(io_tree, async_extent->start,  in submit_compressed_extents()
745 					      async_extent->start +  in submit_compressed_extents()
746 					      async_extent->ram_size - 1);  in submit_compressed_extents()
755 						async_extent->start,  in submit_compressed_extents()
756 						async_extent->start +  in submit_compressed_extents()
757 						async_extent->ram_size - 1);  in submit_compressed_extents()
767 		btrfs_drop_extent_cache(inode, async_extent->start,  in submit_compressed_extents()
768 					async_extent->start +  in submit_compressed_extents()
769 					async_extent->ram_size - 1, 0);  in submit_compressed_extents()
776 		em->start = async_extent->start;  in submit_compressed_extents()
777 		em->len = async_extent->ram_size;  in submit_compressed_extents()
785 		em->ram_bytes = async_extent->ram_size;  in submit_compressed_extents()
787 		em->compress_type = async_extent->compress_type;  in submit_compressed_extents()
800 			btrfs_drop_extent_cache(inode, async_extent->start,  in submit_compressed_extents()
801 						async_extent->start +  in submit_compressed_extents()
802 						async_extent->ram_size - 1, 0);  in submit_compressed_extents()
809 						async_extent->start,  in submit_compressed_extents()
811 						async_extent->ram_size,  in submit_compressed_extents()
814 						async_extent->compress_type);  in submit_compressed_extents()
816 			btrfs_drop_extent_cache(inode, async_extent->start,  in submit_compressed_extents()
817 						async_extent->start +  in submit_compressed_extents()
818 						async_extent->ram_size - 1, 0);  in submit_compressed_extents()
825 		extent_clear_unlock_delalloc(inode, async_extent->start,  in submit_compressed_extents()
826 				async_extent->start +  in submit_compressed_extents()
827 				async_extent->ram_size - 1,  in submit_compressed_extents()
832 				    async_extent->start,  in submit_compressed_extents()
833 				    async_extent->ram_size,  in submit_compressed_extents()
835 				    ins.offset, async_extent->pages,  in submit_compressed_extents()
836 				    async_extent->nr_pages);  in submit_compressed_extents()
839 			struct page *p = async_extent->pages[0];  in submit_compressed_extents()
840 			const u64 start = async_extent->start;  in submit_compressed_extents()
841 			const u64 end = start + async_extent->ram_size - 1;  in submit_compressed_extents()
850 			free_async_extent_pages(async_extent);  in submit_compressed_extents()
853 		kfree(async_extent);  in submit_compressed_extents()
860 	extent_clear_unlock_delalloc(inode, async_extent->start,  in submit_compressed_extents()
861 				     async_extent->start +  in submit_compressed_extents()
862 				     async_extent->ram_size - 1,  in submit_compressed_extents()
868 	free_async_extent_pages(async_extent);  in submit_compressed_extents()
869 	kfree(async_extent);  in submit_compressed_extents()