On Sun, Jul 03, 2022 at 10:16:45PM +0100, Russell King (Oracle) wrote: > On Sun, Jul 03, 2022 at 10:14:41PM +0100, Matthew Wilcox (Oracle) wrote: > > This is the number of bits used by a PMD entry, not the order of a PMD. > > No, it's not the number of bits. A PMD entry doesn't fit in 2 or 3 bits. > This is even more confusing. Well, what is it then? The order of something is PAGE_SIZE << n, and that doesn't seem to be what this is. Happy to call it whatever you want to call it.
