> > > > this patch adds atomic ops where there were none before > > nope... a spinlock/spinunlock contains atomic ops.
unlock usually doesn't but ok > > > for those architectures that need atomics for read (parisc? arm?) > > not today. No atomic needed for read. > > > > > however.. wouldn't it be better to make this a per cpu variable for > > write, and for read iterate or do something smart otherwise? > > So on a machine with 256 CPUS, you want to iterate 256 counters ? you can be smart about this, similar to what ext3 and others do for similar counters - 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/
