Re: [PATCH v2 13/25] fs: Add zero_user_large
From: Matthew Wilcox
Date: Tue Feb 18 2020 - 13:07:07 EST
On Tue, Feb 18, 2020 at 08:10:52PM +0300, Kirill A. Shutemov wrote:
> Acked-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
> > +#if defined(CONFIG_HIGHMEM) && defined(CONFIG_TRANSPARENT_HUGEPAGE)
> > +void zero_user_segments(struct page *page, unsigned start1, unsigned end1,
> > + unsigned start2, unsigned end2);
> > +#else /* !HIGHMEM || !TRANSPARENT_HUGEPAGE */
> This is a neat trick. I like it.
> Although, it means non-inlined version will never get tested :/
I worry about that too, but I don't really want to incur the overhead on
platforms people actually use.