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inline file data in extents

master
Chris Mason 2007-04-19 13:38:02 -04:00 committed by David Woodhouse
parent 8c973943bb
commit eb3bd5da66
2 changed files with 38 additions and 0 deletions
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32
ctree.h
View File

@ -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)
{

6
print-tree.c
View File

@ -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));