318 struct async_extent {  struct
345 	struct async_extent *async_extent;  in add_async_extent()  argument
347 	async_extent = kmalloc(sizeof(*async_extent), GFP_NOFS);  in add_async_extent()
348 	BUG_ON(!async_extent); /* -ENOMEM */  in add_async_extent()
349 	async_extent->start = start;  in add_async_extent()
350 	async_extent->ram_size = ram_size;  in add_async_extent()
351 	async_extent->compressed_size = compressed_size;  in add_async_extent()
352 	async_extent->pages = pages;  in add_async_extent()
353 	async_extent->nr_pages = nr_pages;  in add_async_extent()
354 	async_extent->compress_type = compress_type;  in add_async_extent()
355 	list_add_tail(&async_extent->list, &cow->extents);  in add_async_extent()
645 static void free_async_extent_pages(struct async_extent *async_extent)  in free_async_extent_pages()  argument
649 	if (!async_extent->pages)  in free_async_extent_pages()
652 	for (i = 0; i < async_extent->nr_pages; i++) {  in free_async_extent_pages()
653 		WARN_ON(async_extent->pages[i]->mapping);  in free_async_extent_pages()
654 		page_cache_release(async_extent->pages[i]);  in free_async_extent_pages()
656 	kfree(async_extent->pages);  in free_async_extent_pages()
657 	async_extent->nr_pages = 0;  in free_async_extent_pages()
658 	async_extent->pages = NULL;  in free_async_extent_pages()
670 	struct async_extent *async_extent;  in submit_compressed_extents()  local
681 		async_extent = list_entry(async_cow->extents.next,  in submit_compressed_extents()
682 					  struct async_extent, list);  in submit_compressed_extents()
683 		list_del(&async_extent->list);  in submit_compressed_extents()
689 		if (!async_extent->pages) {  in submit_compressed_extents()
693 			lock_extent(io_tree, async_extent->start,  in submit_compressed_extents()
694 					 async_extent->start +  in submit_compressed_extents()
695 					 async_extent->ram_size - 1);  in submit_compressed_extents()
699 					     async_extent->start,  in submit_compressed_extents()
700 					     async_extent->start +  in submit_compressed_extents()
701 					     async_extent->ram_size - 1,  in submit_compressed_extents()
714 						  inode, async_extent->start,  in submit_compressed_extents()
715 						  async_extent->start +  in submit_compressed_extents()
716 						  async_extent->ram_size - 1,  in submit_compressed_extents()
721 			kfree(async_extent);  in submit_compressed_extents()
726 		lock_extent(io_tree, async_extent->start,  in submit_compressed_extents()
727 			    async_extent->start + async_extent->ram_size - 1);  in submit_compressed_extents()
730 					   async_extent->compressed_size,  in submit_compressed_extents()
731 					   async_extent->compressed_size,  in submit_compressed_extents()
734 			free_async_extent_pages(async_extent);  in submit_compressed_extents()
737 				unlock_extent(io_tree, async_extent->start,  in submit_compressed_extents()
738 					      async_extent->start +  in submit_compressed_extents()
739 					      async_extent->ram_size - 1);  in submit_compressed_extents()
748 						async_extent->start,  in submit_compressed_extents()
749 						async_extent->start +  in submit_compressed_extents()
750 						async_extent->ram_size - 1);  in submit_compressed_extents()
760 		btrfs_drop_extent_cache(inode, async_extent->start,  in submit_compressed_extents()
761 					async_extent->start +  in submit_compressed_extents()
762 					async_extent->ram_size - 1, 0);  in submit_compressed_extents()
769 		em->start = async_extent->start;  in submit_compressed_extents()
770 		em->len = async_extent->ram_size;  in submit_compressed_extents()
778 		em->ram_bytes = async_extent->ram_size;  in submit_compressed_extents()
780 		em->compress_type = async_extent->compress_type;  in submit_compressed_extents()
793 			btrfs_drop_extent_cache(inode, async_extent->start,  in submit_compressed_extents()
794 						async_extent->start +  in submit_compressed_extents()
795 						async_extent->ram_size - 1, 0);  in submit_compressed_extents()
802 						async_extent->start,  in submit_compressed_extents()
804 						async_extent->ram_size,  in submit_compressed_extents()
807 						async_extent->compress_type);  in submit_compressed_extents()
809 			btrfs_drop_extent_cache(inode, async_extent->start,  in submit_compressed_extents()
810 						async_extent->start +  in submit_compressed_extents()
811 						async_extent->ram_size - 1, 0);  in submit_compressed_extents()
818 		extent_clear_unlock_delalloc(inode, async_extent->start,  in submit_compressed_extents()
819 				async_extent->start +  in submit_compressed_extents()
820 				async_extent->ram_size - 1,  in submit_compressed_extents()
825 				    async_extent->start,  in submit_compressed_extents()
826 				    async_extent->ram_size,  in submit_compressed_extents()
828 				    ins.offset, async_extent->pages,  in submit_compressed_extents()
829 				    async_extent->nr_pages);  in submit_compressed_extents()
832 			struct page *p = async_extent->pages[0];  in submit_compressed_extents()
833 			const u64 start = async_extent->start;  in submit_compressed_extents()
834 			const u64 end = start + async_extent->ram_size - 1;  in submit_compressed_extents()
843 			free_async_extent_pages(async_extent);  in submit_compressed_extents()
846 		kfree(async_extent);  in submit_compressed_extents()
853 	extent_clear_unlock_delalloc(inode, async_extent->start,  in submit_compressed_extents()
854 				     async_extent->start +  in submit_compressed_extents()
855 				     async_extent->ram_size - 1,  in submit_compressed_extents()
861 	free_async_extent_pages(async_extent);  in submit_compressed_extents()
862 	kfree(async_extent);  in submit_compressed_extents()