Re: [Patch 1/8] kexec: allow to shrink reserved memory

[Amerigo Wang]

Eric W. Biederman wrote:
> Amerigo Wang <amwang@xxxxxxxxxx> writes:
>
>   
> > +
> > +	start = roundup(start, PAGE_SIZE);
> > +	end = roundup(start + new_size, PAGE_SIZE);
> > +
> > +	for (addr = end; addr < crashk_res.end; addr += PAGE_SIZE) {
> > +		ClearPageReserved(pfn_to_page(addr >> PAGE_SHIFT));
> > +		init_page_count(pfn_to_page(addr >> PAGE_SHIFT));
> > +		free_page((unsigned long)__va(addr));
> > +		totalram_pages++;
> >     
>
> Any chance we can move this inline snippet into a helper function in
> -mm.  To expose what is happening here to the mm developers.
>
>   

Yes, I believe so. In fact I also wanted to do this, but I forgot before 
I sent these patches... Will do it in the next version.

Thanks.


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