Re: [PATCH] mm/hugetlb: Warn the user when issues arise on boot due to hugepages

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On Tue 13-06-17 09:26:15, Mike Kravetz wrote:
> A thought somewhat related to this discussion:
> 
> I noticed that huge pages specified on the kernel command line are allocated
> via 'subsys_initcall'.  This is before 'fs_initcall', even though these huge
> pages are only used by hugetlbfs.  Was just thinking that it might be better
> to move huge page allocations to later in the init process.  At least make
> them part of fs_initcall if not late_initcall?
> 
> Only reason for doing this is because huge page allocations are fairly
> tolerant of allocation failure.

I am not really familiar with the initcall hierarchy to be honest. I
even do not understand what relattion does fs_initcall have to
allocation failures. Could you be more specific?

-- 
Michal Hocko
SUSE Labs

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