Messages in this thread | | | Date | Tue, 29 Sep 2009 10:22:16 -0400 (EDT) | From | Christoph Lameter <> | Subject | Re: No more bits in vm_area_struct's vm_flags. |
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Another concern that has not been discussed is the increased cache footprint due to a slightly enlarged vm data working set (there is also a corresponding icache issue since additional accesses are needed).
Could we stick with the current size and do combinations of flags like we do with page flags? VM_HUGETLB cannot grow up and down f.e. and there are certainly lots of other impossible combinations that can be used to put more information into the flags.
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