Messages in this thread | | | Date | Sun, 28 Jul 2002 17:56:49 -0700 | From | William Lee Irwin III <> | Subject | Re: [BK PATCH 2.5] Introduce 64-bit versions of PAGE_{CACHE_,}{MASK,ALIGN} |
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On Sun, Jul 28, 2002 at 05:10:48PM -0700, Andrew Morton wrote: > - Few pages use ->private for much. Hash for it. 4(ish) bytes > saved.
Do you know an approximate reasonable constant of proportionality for how many pages have ->private attached?
On Sun, Jul 28, 2002 at 05:10:48PM -0700, Andrew Morton wrote: > - Remove the rmap chain (I just broke ptep_to_address() anyway). 4 bytes > saved. struct page is now 20 bytes.
How did ptep_to_address() break? I browsed over your latest changes and missed the bit where that fell apart. I'll at least take a stab at fixing it up until the other bits materialize.
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