Re: [PATCH v1] fsck.erofs: implement thread-safe global LRU metadata cache

On 2026/6/13 18:10, Nithurshen wrote:
> Hi Xiang,
> 
> What if rather than caching the raw metadata bytes, the userspace
> cache will focus on caching the parsed structures (such as the
> computed erofs_map_blocks mappings) to save the worker threads
> from redundantly parsing chunk indexes and calculating offsets.
> 
> Can I replace this malloc-based raw buffer approach and focus v3
> patch on an LRU cache for the parsed block mappings to reduce the
> CPU overhead during the concurrent directory traversal?

I don't think it's worth unless you provide enough number to show
which really reduces the CPU overhead.

decompressed metadata cache is only useful for metabox, but I don't
think it's prioritized for now.

Thanks,
Gao Xiang

> 
> Thanks,
> Nithurshen