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advise_mmap_for_persistence

turbo_persistence::mmap_helper

Function advise_mmap_for_persistence 

Source 
pub fn advise_mmap_for_persistence(mmap: &Mmap) -> Result<()>
Expand description

Apply Linux-specific mmap advice flags that should be set on all persistent mmaps.

  • DontFork: prevents mmap regions from being copied into child processes on fork(), avoiding unnecessary memory duplication and potential SIGBUS.
  • Unmergeable: opts pages out of KSM (Kernel Same-page Merging) since our data is unique compressed content that won’t benefit from deduplication scanning.