yaffs Direct: Add feature to limit the number of files that may be created on a singl...

[yaffs2.git] / yaffs_guts.h

diff --git a/yaffs_guts.h b/yaffs_guts.h
index 77c05d3b4924357cb2a9c31531e6392346aea2b5..b6d51299d87ffbc6ba8cac87a470b8872726249c 100644 (file)
--- a/yaffs_guts.h
+++ b/yaffs_guts.h
@@ -78,10 +78,12 @@
 #define YAFFS_OBJECTID_UNLINKED                3
 #define YAFFS_OBJECTID_DELETED         4
 
+/* Fake object Id for summary data */
+#define YAFFS_OBJECTID_SUMMARY         0x10
+
 /* Pseudo object ids for checkpointing */
-#define YAFFS_OBJECTID_SB_HEADER       0x10
 #define YAFFS_OBJECTID_CHECKPOINT_DATA 0x20
-#define YAFFS_SEQUENCE_CHECKPOINT_DATA  0x21
+#define YAFFS_SEQUENCE_CHECKPOINT_DATA 0x21
 
 #define YAFFS_MAX_SHORT_OP_CACHES      20
 
@@ -278,6 +280,7 @@ struct yaffs_block_info {
                                   Block should be prioritised for GC */
        u32 chunk_error_strikes:3;      /* How many times we've had ecc etc
                                failures on this block and tried to reuse it */
+       u32 has_summary:1;      /* The block has a summary */
 
        u32 has_shrink_hdr:1;   /* This block has at least one shrink header */
        u32 seq_number;         /* block sequence number for yaffs2 */
@@ -582,6 +585,13 @@ struct yaffs_param {
        int auto_unicode;
 #endif
        int always_check_erased;        /* Force chunk erased check always on */
+
+       int disable_summary;
+
+       int max_objects;        /*
+                                * Set to limit the number of objects created.
+                                * 0 = no limit.
+                               */
 };
 
 struct yaffs_dev {
@@ -681,6 +691,7 @@ struct yaffs_dev {
        unsigned gc_block;
        unsigned gc_chunk;
        unsigned gc_skip;
+       struct yaffs_summary_tags *gc_sum_tags;
 
        /* Special directories */
        struct yaffs_obj *root_dir;
@@ -723,7 +734,11 @@ struct yaffs_dev {
        /* Dirty directory handling */
        struct list_head dirty_dirs;    /* List of dirty directories */
 
-       /* Statistcs */
+       /* Summary */
+       int chunks_per_summary;
+       struct yaffs_summary_tags *sum_tags;
+
+       /* Statistics */
        u32 n_page_writes;
        u32 n_page_reads;
        u32 n_erasures;
@@ -734,7 +749,7 @@ struct yaffs_dev {
        u32 oldest_dirty_gc_count;
        u32 n_gc_blocks;
        u32 bg_gcs;
-       u32 n_retired_writes;
+       u32 n_retried_writes;
        u32 n_retired_blocks;
        u32 n_ecc_fixed;
        u32 n_ecc_unfixed;
@@ -744,6 +759,8 @@ struct yaffs_dev {
        u32 n_unmarked_deletions;
        u32 refresh_count;
        u32 cache_hits;
+       u32 tags_used;
+       u32 summary_used;
 
 };