Messages in this thread | | | From | KOSAKI Motohiro <> | Subject | Re: [PATCH followup] mm: get rid of CONFIG_STACK_GROWSUP || CONFIG_IA64 | Date | Wed, 20 Apr 2011 16:08:51 +0900 (JST) |
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> Hi Kosaki, > > On Wed 20-04-11 09:33:26, KOSAKI Motohiro wrote: > > > While I am in the cleanup mode. We should use VM_GROWSUP rather than > > > tricky CONFIG_STACK_GROWSUP||CONFIG_IA64. > > > > > > What do you think? > > > > Now, VM_GROWSUP share the same value with VM_NOHUGEPAGE. > > (this trick use the fact that thp don't support any stack growup architecture) > > I am not sure I understand you. AFAICS, VM_GROWSUP is defined to non 0 > only if CONFIG_STACK_GROWSUP||CONFIG_IA64 (include/linux/mm.h). > And we use it to determine whether expand_stack_growsup[*] should be > defined (in include/linux/mm.h). > > The patch basically unifies the way how we export expand_stack_growsup > function and how define it (in mm/mmap.c). > > So either we should use CONFIG_STACK_GROWSUP||CONFIG_IA64 at both places > or we should use VM_GROWSUP trick. I am for the later one. > > Am I missing something? > > --- > [*] the previous patch renamed expand_growsup to expand_stack_growsup.
Right you are. sorry.
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