(Added Lennart to the discussion so he can help explaining how systemd will use the xattrs)
On Fri, Jul 20, 2012 at 11:04:59AM -0700, Tejun Heo wrote: > Hello, Hugh, Aristeu. > > On Fri, Jul 20, 2012 at 01:59:59PM -0400, Aristeu Rozanski wrote: > > hm, not sure that's what Tejun meant. tmpfs uses anonymous memory for the > > file > > contents, so reuse that infrastructure to allocate space for the extended > > attributes the same way, instead of using kmem. > > > > First thing I can think of is to use whole pages for it to prevent further > > complexity. Shouldn't make much difference considering the usecases we have > > now (systemd and containers), right? > > Yeah, that's what I meant. The internal fragmentation is ugly but I > think that should do for now at least. while talking to Lennart, it seems there're a lot of ways the xattrs can be used in systemd. If we're concerned with the amount of memory used, why not create a new namespace just for this, limiting by definition the maximum value size? -- Aristeu -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
