inline file data in extents

diff --git a/ctree.h b/ctree.h
index 1dca9cb..308008a 100644 (file)
--- a/ctree.h
+++ b/ctree.h
@@ -200,8 +200,12 @@ struct btrfs_root_item {
        __le32 refs;
 } __attribute__ ((__packed__));
 
+#define BTRFS_FILE_EXTENT_REG 0
+#define BTRFS_FILE_EXTENT_INLINE 1
+
 struct btrfs_file_extent_item {
        __le64 generation;
+       u8 type;
        /*
         * disk space consumed by the extent, checksum blocks are included
         * in these numbers
@@ -849,6 +853,34 @@ static inline u8 *btrfs_leaf_data(struct btrfs_leaf *l)
        return (u8 *)l->items;
 }
 
+static inline int btrfs_file_extent_type(struct btrfs_file_extent_item *e)
+{
+       return e->type;
+}
+static inline void btrfs_set_file_extent_type(struct btrfs_file_extent_item *e,
+                                             u8 val)
+{
+       e->type = val;
+}
+
+static inline char *btrfs_file_extent_inline_start(struct
+                                                  btrfs_file_extent_item *e)
+{
+       return (char *)(&e->disk_blocknr);
+}
+
+static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize)
+{
+       return (unsigned long)(&((struct
+                 btrfs_file_extent_item *)NULL)->disk_blocknr) + datasize;
+}
+
+static inline u32 btrfs_file_extent_inline_len(struct btrfs_item *e)
+{
+       struct btrfs_file_extent_item *fe = NULL;
+       return btrfs_item_size(e) - (unsigned long)(&fe->disk_blocknr);
+}
+
 static inline u64 btrfs_file_extent_disk_blocknr(struct btrfs_file_extent_item
                                                 *e)
 {

diff --git a/print-tree.c b/print-tree.c
index 12787c6..d56860b 100644 (file)
--- a/print-tree.c
+++ b/print-tree.c
@@ -85,6 +85,12 @@ void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
                case BTRFS_EXTENT_DATA_KEY:
                        fi = btrfs_item_ptr(l, i,
                                            struct btrfs_file_extent_item);
+                       if (btrfs_file_extent_type(fi) ==
+                           BTRFS_FILE_EXTENT_INLINE) {
+                               printf("\t\tinline extent data size %u\n",
+                                  btrfs_file_extent_inline_len(l->items + i));
+                               break;
+                       }
                        printf("\t\textent data disk block %Lu nr %Lu\n",
                               btrfs_file_extent_disk_blocknr(fi),
                               btrfs_file_extent_disk_num_blocks(fi));