linux-kernel - Re: [PATCH RESEND 00/12] mm: add bitmap VMA flag helpers and convert all mmap

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Message-Id: <20260119143143.c7ad8551748eea4ec2b83340@linux-foundation.org>
Date: Mon, 19 Jan 2026 14:31:43 -0800
From: Andrew Morton <akpm@...ux-foundation.org>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
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Subject: Re: [PATCH RESEND 00/12] mm: add bitmap VMA flag helpers and
 convert all mmap_prepare to use them

On Mon, 19 Jan 2026 21:19:02 +0000 Lorenzo Stoakes <lorenzo.stoakes@...cle.com> wrote:

> We introduced the bitmap VMA type vma_flags_t in the aptly named commit
> 9ea35a25d51b ("mm: introduce VMA flags bitmap type") in order to permit
> future growth in VMA flags and to prevent the asinine requirement that VMA
> flags be available to 64-bit kernels only if they happened to use a bit
> number about 32-bits.
> 
> This is a long-term project as there are very many users of VMA flags
> within the kernel that need to be updated in order to utilise this new
> type.

Thanks, I added this to mm.git's mm-new branch for some public exposure.

I suppressed the usual email storm.