On Mon, Jul 13, 2015 at 06:34:42PM +0900, Sergey Senozhatsky wrote: > Yes. 'Nice' used in a sense that drivers have logic to release the > memory anyway; mm asks volunteers (the drivers that have registered > shrinker callbacks) to release some spare/wasted/etc. when things > are getting tough (the drivers are not aware of that in general). > This is surely important to mm, not to the driver though -- it just > agrees to be 'nice', but even not expected to release any memory at > all (IOW, this is not a contract). Not registering the shrinker is a plain and simple memory leak. Just like a missing free your driver will appear to work fine for a while, but eventually the leaks will bring down the whole system including your driver. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>