On Fri, 5 Jul 2002, Linus Torvalds wrote:

On Fri, 5 Jul 2002, Rik van Riel wrote:

quoted

But it is, mmap() and anonymous memory don't trigger writeback.

I don't think we can fix that, without going back to the approach of
marking any writable memory as read-only and counting it at page-fault
time.

I don't think we have to fix it, as long as the
shrink_caches/page_launder function is well
balanced and throttling is done intelligently.

Wasn't it you who did that test-patch originally?

I don't remember who did it, so I suspect it wasn't me.
Could it be Ben ?

There might be some way to avoid the page fault badness (the large page
stuff will do this automatically, for example), which might make the
"let's keep track of dirty mappings explicitly" approach acceptable
again.

That's another approach, I guess it'll be worth looking
into both (and searching the web for what other people
have done before us with both ;))

regards,

Rik
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