Method decommitOrManuallyZero

pkg/sentry/pgalloc/pgalloc.go:1134–1141

(fr memmap.FileRange)

}

func (f *MemoryFile) decommitOrManuallyZero(fr memmap.FileRange) {
	if err := f.decommitFile(fr); err != nil {
		log.Warningf("Failed to decommit %v: %v", fr, err)
		// Zero the pages manually. This won't reduce memory usage, but at
		// least ensures that the pages will be zeroed when reallocated.
		f.manuallyZero(fr)
	}
}

// HasUniqueRef returns true if all pages in the given range have exactly one
// reference. A return value of false is inherently racy, but if the caller