Struct ExtentDataRef 

pub struct ExtentDataRef {
    pub root: u64,
    pub objectid: u64,
    pub offset: u64,
    pub count: u32,
}

Standalone data extent backreference (non-inline).

Key: (extent_bytenr, EXTENT_DATA_REF, hash). Records which file inode references a given data extent.

Fields

root: u64

Root tree objectid that owns the referencing inode.

objectid: u64

Inode number that references this extent.

offset: u64

File offset where this extent is referenced.

count: u32

Number of references from this (root, objectid, offset) triple.

Implementations

impl ExtentDataRef

pub fn parse(data: &[u8]) -> Option<Self>

Parse a standalone extent data ref from a raw byte buffer.

Trait Implementations

impl Clone for ExtentDataRef

fn clone(&self) -> ExtentDataRef

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ExtentDataRef

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.