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DateWed, 27 Nov 2002 11:36:07 -0800
FromAndrew Morton <>
SubjectRe: [PATCH] page walker bugfix (was: 2.5.49-mm2)
Ingo Oeser wrote:
>
> Hi Andrew,
> hi list readers,
>
> On Wed, Nov 27, 2002 at 01:11:38AM -0800, Andrew Morton wrote:
> > .. Some code from Ingo Oeser to start using the expanded and cleaned up
> > user pagetable walker code. This affects the st and sg drivers; I'm
> > not sure of the testing status of this?
>
> The testing status is: None, but it compiles.
>
> The sg-driver maintainer has already said he does some testing
> and the author of the previous code in st.c was positive about
> using these features. That's why I've choosen these as my "victims".

Yes, Doug Gilbert will help us out here.

> I also found a locking bug in walk_user_pages() in case of OOM or
> SIGBUS. Fixed by the attached patch.
>

Thanks.

We'll need to be concentrating on the shared pagetable code for
a while, and your patch overlaps with that. So I've swapped the
applying order (you come second) and I'll probably break your
stuff out separately for a while so Dave can generate clean patches.

When mm3 emerges could you please check mm/mmap.c around here:

vma = NULL; /* needed for out-label */
I may have misplaced that one...
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