Messages in this thread | | | Date | Mon, 03 Mar 2003 15:52:42 -0600 | From | Dave McCracken <> | Subject | Re: [PATCH 2.5.63] Teach page_mapped about the anon flag |
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--On Monday, March 03, 2003 13:35:39 -0800 Andrew Morton <akpm@digeo.com> wrote:
> We do need a patch I think. page_mapped() is still assuming that an > all-bits-zero atomic_t corresponds to a zero-value atomic_t. > > This does appear to be true for all supported architectures, but it's a > bit grubby.
If that's ever not true then we need extra code to initialize/rezero that field, since we assume it's zero on alloc, and the pte_chain code also assumes it's zero for a new page.
Dave
====================================================================== Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059 dmccr@us.ibm.com T/L 678-3059
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