Messages in this thread | | | Date | Sun, 21 Jul 2002 22:04:29 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH][1/2] return values shrink_dcache_memory etc |
| |
Linus Torvalds wrote: > > On Sat, 20 Jul 2002, Rik van Riel wrote: > > > > OK, I'll try to forward-port Ed's code to do that from 2.4 to 2.5 > > this weekend... > > Side note: while I absolutely think that is the right thing to do, that's > also the much more "interesting" change. As a result, I'd be happier if it > went through channels (ie probably Andrew) and had some wider testing > first at least in the form of a CFT on linux-kernel. >
I'd suggest that we avoid putting any additional changes into the VM until we have solutions available for:
2: Make it work with pte-highmem (Bill Irwin is signed up for this)
4: Move the pte_chains into highmem too (Bill, I guess)
6: maybe GC the pte_chain backing pages. (Seems unavoidable. Rik?)
Especially pte_chains in highmem. Failure to fix this well is a showstopper for rmap on large ia32 machines, which makes it a showstopper full stop.
If we can get something in place which works acceptably on Martin Bligh's machines, and we can see that the gains of rmap (whatever they are ;)) are worth the as-yet uncoded pains then let's move on. But until then, adding new stuff to the VM just makes a `patch -R' harder to do.
- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |