On Tue, Mar 19, 2024 at 05:27:32PM +0800, Kairui Song wrote: > From: Kairui Song <kasong@xxxxxxxxxxx> > > It can be used after xas_load to check the order of loaded entries. > Compared to xa_get_order, it saves an XA_STATE and avoid a rewalk. > > Signed-off-by: Kairui Song <kasong@xxxxxxxxxxx> Brilliant; yes. I was just looking at this the other day and wondering why I hadn't done this. Acked-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> > +EXPORT_SYMBOL(xas_get_order); We don't have a module user yet, so I'd hold off on this. It's an unusual thing to want to do, and we may never have a modular user. Also, xas functions are EXPORT_SYMBOL_GPL, not EXPORT_SYMBOL.