linux-kernel - Re: [PATCH RESEND 09/12] mm: make vm_area_desc utilise vma_flags

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Message-ID: <20260119231403.GS1134360@nvidia.com>
Date: Mon, 19 Jan 2026 19:14:03 -0400
From: Jason Gunthorpe <jgg@...dia.com>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
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Subject: Re: [PATCH RESEND 09/12] mm: make vm_area_desc utilise vma_flags_t
 only

On Mon, Jan 19, 2026 at 09:19:11PM +0000, Lorenzo Stoakes wrote:
> +static inline bool is_shared_maywrite(vma_flags_t flags)
> +{

I'm not sure it is ideal to pass this array by value? Seems like it
might invite some negative optimizations since now the compiler has to
optimze away a copy too.

Jason