Re: [PATCH] /dev/zero: make private mapping full anonymous mapping

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To: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
Subject: Re: [PATCH] /dev/zero: make private mapping full anonymous mapping
From: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Date: Tue, 14 Jan 2025 18:22:14 +0000
Cc: Yang Shi <yang@xxxxxxxxxxxxxxxxxxxxxx>, arnd@xxxxxxxx, gregkh@xxxxxxxxxxxxxxxxxxx, Liam.Howlett@xxxxxxxxxx, vbabka@xxxxxxx, jannh@xxxxxxxxxx, liushixin2@xxxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <10f5cb31-e9fa-4574-b36d-0e685fec5cda@lucifer.local>
References: <20250113223033.4054534-1-yang@os.amperecomputing.com> <2dda50aa-e4a1-4664-b8fa-56ba975db329@lucifer.local> <65691afc-615a-4716-8a2e-1f43bc65111c@os.amperecomputing.com> <3fdcd6a5-27fe-411b-923c-b7410e4cbda9@lucifer.local> <10f5cb31-e9fa-4574-b36d-0e685fec5cda@lucifer.local>

On Tue, Jan 14, 2025 at 06:19:32PM +0000, Lorenzo Stoakes wrote:
> I see shmem_zero_page() does change vma->vm_page, this is broken... ugh. I

I think you mean shmem_zero_setup() and vma->vm_file, right?

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  - From: Yang Shi
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  - From: Lorenzo Stoakes
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  - From: Yang Shi
- Re: [PATCH] /dev/zero: make private mapping full anonymous mapping
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- Re: [PATCH] /dev/zero: make private mapping full anonymous mapping
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