On Fri, Nov 30, 2018 at 8:24 AM Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote: > > On Fri, Nov 30, 2018 at 07:54:49AM -0800, Dan Williams wrote: > > Looks good to me, although can we make that cookie an actual type? I > > think it's mostly ok to pass around (void *) for 'entry' inside of > > fs/dax.c, but once an entry leaves that file I'd like it to have an > > explicit type to catch people that might accidentally pass a (struct > > page *) to the unlock routine. > > That's a really good idea. Something like this? > > typedef struct { > void *v; > } dax_entry_t; Yes, please. > I could see us making good use of that within dax.c.