Re: [PATCH 01/11] rxrpc: Add a common object cache

From: David Miller
Date: Tue Mar 08 2016 - 15:15:30 EST

From: David Howells <dhowells@xxxxxxxxxx>
Date: Tue, 08 Mar 2016 13:02:28 +0000

> David Howells <dhowells@xxxxxxxxxx> wrote:
>> Does it make sense to maintain a FIFO list of connections (though this would
>> mean potentially taking a spinlock every time I get a packet)?
> It occurs to me that only inactive connections would need to be on an LRU
> list. Any connection with packets or active calls to deal with wouldn't be on
> the list.

In that kind of scheme you have to decide if it's possible to elide a
response in order to intentionally keep objects off the "inactive" LRU
list. I bet there is.