Messages in this thread | | | Date | Fri, 31 Oct 2008 03:59:58 +0100 | From | Nick Piggin <> | Subject | Re: [PATCH] regression: vmalloc easily fail. |
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On Thu, Oct 30, 2008 at 04:04:43PM -0200, Glauber Costa wrote: > On Thu, Oct 30, 2008 at 11:46:02AM -0500, Matt Mackall wrote: > > On Thu, 2008-10-30 at 05:49 +0100, Nick Piggin wrote: > > > I still think we should get rid of the guard pages in non-debug kernels > > > completely, > > > > For what it's worth, I agree. > Do we want any specific option, or is DEBUG_VM enough ?
I'd almost say DEBUG_PAGEALLOC; which could also disable lazy unmapping in order to catch use-after free better. Or just a different option entirely.
DEBUG_VM has, so far, been kept to relatively cheap tests that are not much pain to turn on, and shouldn't result in much behavioural change of algorithms/data structures AFAIKS. Which can be a good thing.
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