On Thu, Jun 14, 2018 at 09:30:42PM +0100, David Howells wrote: > Alexey Dobriyan <adobriyan@xxxxxxxxx> wrote: > > > > Require a minimum inline name size of 33+1 to allow for names that look > > > like two hex numbers with a dash between. > > > > Why 34? /proc will fallback to separate allocation for name anyway. > > See above comment. I ran find on /proc and there were a bunch of files whose > names were "<hex>-<hex>". Allow for 16-char hex addresses and add a NUL char > to that and you get 34. Those must be /proc/*/map_files symlinks. If that's the case, they don't have PDEs allocated.