// that a chunk that just became dense is scavenged in the case of a race between memory
// allocation and scavenging.
//
// When synchronously scavenging for the memory limit or for debug.FreeOSMemory, these
// "dense" packing heuristics are ignored (in other words, scavenging is "forced") because
// in these scenarios returning memory to the OS is more important than keeping CPU
// overheads low.

package runtime

	gp.m.mallocing--

	if debug.scavtrace > 0 {
		printScavTrace(0, released, true)
	}
}

//go:linkname runtime_debug_freeOSMemory runtime/debug.freeOSMemory
func runtime_debug_freeOSMemory() {
	GC()
	systemstack(func() { mheap_.scavengeAll() })
}

// Initialize a new span with the given start and npages.