Struct CacheConfig 

pub struct CacheConfig {
    pub tree_blocks: usize,
    pub inodes: usize,
    pub extent_maps: usize,
}

Capacities for the three caches a crate::Filesystem holds. Pass to crate::Filesystem::open_with_caches / crate::Filesystem::open_subvol_with_caches to override the defaults — useful for memory-constrained embedders or benchmarking the cold path.

All three values must be > 0; the underlying LRU caches reject zero-capacity construction. Use CacheConfig::no_cache for the minimum-viable single-entry caches.

Fields

tree_blocks: usize

Number of tree blocks to cache (~16 KiB each on default nodesize). Default: 4096 (~64 MiB).

inodes: usize

Number of parsed inode items to cache. Default: 4096.

extent_maps: usize

Number of per-inode extent maps to cache. Default: 1024.

Implementations

impl CacheConfig

pub fn no_cache() -> Self

Smallest viable configuration: each cache holds a single entry. Useful for benchmarking the cold path or when the embedder wants to disable caching entirely. The LRU implementations reject 0, so this is the actual floor.

Trait Implementations

impl Clone for CacheConfig

fn clone(&self) -> CacheConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CacheConfig

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

Formats the value using the given formatter.

impl Default for CacheConfig

fn default() -> Self

Returns the “default value” for a type.

impl Copy for CacheConfig