Type Alias BlockMeta 

pub type BlockMeta = MetaSlot;

Current metadata backing a block head (see frame::MetaSlot / issue #38).

Aliased Type

pub struct BlockMeta {
    pub free_link: FreeListLink,
    pub vtable: Atomic<u64>,
    pub flags: Atomic<u32>,
    pub order: Atomic<u8>,
    pub refcount: Atomic<u32>,
    pub generation: Atomic<u32>,
    pub guard: Atomic<u32>,
    pub meta_aux: Atomic<u32>,
    pub _reserved_tail: [u8; 16],
    /* private fields */
}

Fields

free_link: FreeListLink

vtable: Atomic<u64>

*const FrameMetaVtable as bits; 0 means DEFAULT_FRAME_META_VTABLE.

flags: Atomic<u32>

order: Atomic<u8>

refcount: Atomic<u32>

generation: Atomic<u32>

Bumps each time the frame is successfully claimed from the buddy free list (see MetaSlot::note_new_allocation_epoch).

guard: Atomic<u32>

Kernel-owned guard bits (meta_guard); independent of frame_flags.

meta_aux: Atomic<u32>

Low 16 bits: owner CPU id hint (issue #38); upper bits reserved / NUMA placeholder.

_reserved_tail: [u8; 16]