const runtime.userArenaChunkBytesMax

3 uses

	runtime (current package)
		arena.go#L190: 	userArenaChunkBytesMax = 8 << 20
		arena.go#L191: 	userArenaChunkBytes    = uintptr(int64(userArenaChunkBytesMax-heapArenaBytes)&(int64(userArenaChunkBytesMax-heapArenaBytes)>>63) + heapArenaBytes) // min(userArenaChunkBytesMax, heapArenaBytes)