linux-kernel - Re: [RFC PATCH 3/8] mm: Use get_unmapped_area

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Date: Fri, 16 Feb 2024 22:15:05 +0000
From: "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
To: "kirill.shutemov@...ux.intel.com" <kirill.shutemov@...ux.intel.com>
CC: "debug@...osinc.com" <debug@...osinc.com>, "luto@...nel.org"
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	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 3/8] mm: Use get_unmapped_area_vmflags()

On Fri, 2024-02-16 at 14:56 +0200, Kirill A. Shutemov wrote:
> > +unsigned long
> > +get_unmapped_area(struct file *file, unsigned long addr, unsigned
> > long len,
> > +               unsigned long pgoff, unsigned long flags)
> > +{
> > +       return __get_unmapped_area(file, addr, len, pgoff, flags,
> > 0);
> > +}
> >   EXPORT_SYMBOL(get_unmapped_area);
> 
> Any reason it is not a static inline function in the header file?

get_unmapped_area() doesn't seem to be referenced from any modules. I
don't think it needs to be exported actually. Maybe it used to be?

It could be a static inline it seems. Why are you thinking it would be
better?

I think maybe get_unmapped_area() should stay as is, static-inline
wise, but remove the export, and the newly added __get_unmapped_area()
should be made static. Does it sound reasonable?