Messages in this thread | | | Date | Thu, 8 Apr 2004 17:15:24 +0100 (BST) | From | Hugh Dickins <> | Subject | Re: NUMA API for Linux |
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On Wed, 7 Apr 2004, Andrew Morton wrote: > > Your patch takes the CONFIG_NUMA vma from 64 bytes to 68. It would be nice > to pull those 4 bytes back somehow.
How significant is this vma size issue?
anon_vma objrmap will add 20 bytes to each vma (on 32-bit arches): 8 for prio_tree, 12 for anon_vma linkage in vma, sometimes another 12 for the anon_vma head itself.
anonmm objrmap adds just the 8 bytes for prio_tree, remaining overhead 28 bytes per mm.
Seems hard on Andi to begrudge him 4.
Hugh
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