DragonFly kernel List (threaded) for 2007-02
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Re: Page fault handling in vpagetable area clarification
On Monday 12 February 2007 18:53, Matthew Dillon wrote:
[...]
> The write bit should not be cleared from fs.prot in that case. Check
> the conditionals on fault_type in vm_fault_object().
>
> case 1: line 751 vm/vm_fault.c (in HEAD).
>
> VM_PROT_WRITE is only cleared if fault_type was not a write fault
Indeed it is. I actually had an editor window open on that line while I was
writing my mail, but apparently I was hung up on "Next, we get to
vm_fault_object() which downgrades fs.prot to readonly" from the notes I had
taken while following the read fault case. I must have looked at the
conditional tens of times, but my brain refused to register the second "if".
Sorry. Next time, I'll have an 8-year old audit my bug report before sending
it in.
Aggelos
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