Messages in this thread | ![/](/images/icornerl.gif) | | Date | Mon, 11 Aug 2003 19:19:43 +0200 (CEST) | From | Ingo Molnar <> | Subject | Re: 4GB+DEBUG_PAGEALLOC oopses with 2.6.0-test3-mm1 |
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On Mon, 11 Aug 2003, Manfred Spraul wrote:
> > this is not a bug technically, unless the mount options are in the > > last linearly mapped page. It is a bug to copy those unallocated > > bytes, but they do not get to relied upon. Note that the non-4G code > > copies them just as much. > > Or unless there are holes in the memory map, or unless pages were > unmapped from the kernel linear mapping for GART. > IMHO the currect code is unacceptable.
IMHO the mount-options API is quite unclean - since when do we guarantee -EFAULT semantics?
> It is possible to use direct_copy_ instead of memcpy for fs==KERNEL_DS > in mm/usercopy.c?
yes. But i still think we should fix the API too.
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