Messages in this thread | | | Date | Tue, 9 Aug 2005 15:50:47 +0100 (BST) | From | Hugh Dickins <> | Subject | Re: [RFC][patch 0/2] mm: remove PageReserved |
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On Tue, 9 Aug 2005, Benjamin Herrenschmidt wrote: > > > But you don't mind if they are refcounted, do you? > > Just so long as they start out from 1 so never get freed. > > Well, a refcounting bug would let them be freed and kaboom ... That's > why a "PG_not_your_ram_dammit" bit would be useful. It could at least > BUG_ON when refcount reaches 0 :)
Okay, great, let's give every struct page two refcounts, so if one of them goes wrong, the other one will save us.
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