> > > And even in that four-liner, I suspect that the *last* two lines are > > > actually incorrect: there's no point in updating the file time when the > > > page *becomes* dirty, > > > > Actually all four lines do that. The first two for a write access on > > a present, read-only pte, the other two for a write on a non-present > > pte. > > > > > we should update the file time when it is marked > > > clean, and "msync(MS_SYNC)" should update it as part of *that*. > > > > That would need a new page flag (PG_mmap_dirty?). Do we have one > > available? > > I thought the page writing stuff looked at (and cleared) the pte > dirty bit, too?
Yeah, it does. Hmm... What happens on munmap? The times _could_ get updated from there as well, but it's getting complicated. Miklos -- 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/
