fs/yaffs2/yaffs_guts.h

615 struct yaffs_dev {  struct
616 	struct yaffs_param param;
620 	void *os_context;
621 	void *driver_context;
623 	struct list_head dev_list;
626 	int data_bytes_per_chunk;
629 	u16 chunk_grp_bits;	/* Number of bits that need to be resolved if
632 	u16 chunk_grp_size;	/* == 2^^chunk_grp_bits */
635 	u32 tnode_width;
636 	u32 tnode_mask;
637 	u32 tnode_size;
640 	u32 chunk_shift;	/* Shift value */
641 	u32 chunk_div;		/* Divisor after shifting: 1 for 2^n sizes */
642 	u32 chunk_mask;		/* Mask to use for power-of-2 case */
644 	int is_mounted;
645 	int read_only;
646 	int is_checkpointed;
649 	int internal_start_block;
650 	int internal_end_block;
651 	int block_offset;
652 	int chunk_offset;
655 	int checkpt_page_seq;	/* running sequence number of checkpt pages */
656 	int checkpt_byte_count;
657 	int checkpt_byte_offs;
658 	u8 *checkpt_buffer;
659 	int checkpt_open_write;
660 	int blocks_in_checkpt;
661 	int checkpt_cur_chunk;
662 	int checkpt_cur_block;
663 	int checkpt_next_block;
664 	int *checkpt_block_list;
665 	int checkpt_max_blocks;
666 	u32 checkpt_sum;
667 	u32 checkpt_xor;
669 	int checkpoint_blocks_required;	/* Number of blocks needed to store
673 	struct yaffs_block_info *block_info;
674 	u8 *chunk_bits;		/* bitmap of chunks in use */
675 	unsigned block_info_alt:1;	/* allocated using alternative alloc */
676 	unsigned chunk_bits_alt:1;	/* allocated using alternative alloc */
677 	int chunk_bit_stride;	/* Number of bytes of chunk_bits per block.
681 	int n_erased_blocks;
682 	int alloc_block;	/* Current block being allocated off */
683 	u32 alloc_page;
684 	int alloc_block_finder;	/* Used to search for next allocation block */
687 	void *allocator;
688 	int n_obj;
689 	int n_tnodes;
691 	int n_hardlinks;
693 	struct yaffs_obj_bucket obj_bucket[YAFFS_NOBJECT_BUCKETS];
694 	u32 bucket_finder;
696 	int n_free_chunks;
699 	u32 *gc_cleanup_list;	/* objects to delete at the end of a GC. */
700 	u32 n_clean_ups;
702 	unsigned has_pending_prioritised_gc;	/* We think this device might
704 	unsigned gc_disable;
705 	unsigned gc_block_finder;
706 	unsigned gc_dirtiest;
707 	unsigned gc_pages_in_use;
708 	unsigned gc_not_done;
709 	unsigned gc_block;
710 	unsigned gc_chunk;
711 	unsigned gc_skip;
712 	struct yaffs_summary_tags *gc_sum_tags;
715 	struct yaffs_obj *root_dir;
716 	struct yaffs_obj *lost_n_found;
718 	int buffered_block;	/* Which block is buffered here? */
719 	int doing_buffered_block_rewrite;
721 	struct yaffs_cache *cache;
722 	int cache_last_use;
725 	struct yaffs_obj *unlinked_dir;	/* Directory where unlinked and deleted
727 	struct yaffs_obj *del_dir;	/* Directory where deleted objects are
729 	struct yaffs_obj *unlinked_deletion;	/* Current file being
731 	int n_deleted_files;	/* Count of files awaiting deletion; */
732 	int n_unlinked_files;	/* Count of unlinked files. */
733 	int n_bg_deletions;	/* Count of background deletions. */
736 	struct yaffs_buffer temp_buffer[YAFFS_N_TEMP_BUFFERS];
737 	int max_temp;
738 	int temp_in_use;
739 	int unmanaged_buffer_allocs;
740 	int unmanaged_buffer_deallocs;
743 	unsigned seq_number;	/* Sequence number of currently
745 	unsigned oldest_dirty_seq;
746 	unsigned oldest_dirty_block;
749 	int refresh_skip;	/* A skip down counter.
753 	struct list_head dirty_dirs;	/* List of dirty directories */
756 	int chunks_per_summary;
757 	struct yaffs_summary_tags *sum_tags;
760 	u32 n_page_writes;
761 	u32 n_page_reads;
762 	u32 n_erasures;
763 	u32 n_erase_failures;
764 	u32 n_gc_copies;
765 	u32 all_gcs;
766 	u32 passive_gc_count;
767 	u32 oldest_dirty_gc_count;
768 	u32 n_gc_blocks;
769 	u32 bg_gcs;
770 	u32 n_retried_writes;
771 	u32 n_retired_blocks;
772 	u32 n_ecc_fixed;
773 	u32 n_ecc_unfixed;
774 	u32 n_tags_ecc_fixed;
775 	u32 n_tags_ecc_unfixed;
776 	u32 n_deletions;
777 	u32 n_unmarked_deletions;
778 	u32 refresh_count;
779 	u32 cache_hits;
780 	u32 tags_used;
781 	u32 summary_used;