linux-kernel - Re: [PATCH] proc: export page young and skip_kasan

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Message-ID: <55263fe2-f8ae-f681-69fd-1064a74f2bb6@linux.alibaba.com>
Date:   Sat, 4 Jun 2022 17:50:31 +0800
From:   Xin Hao <xhao@...ux.alibaba.com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     changbin.du@...el.com, sashal@...nel.org,
        akpm@...ux-foundation.org, adobriyan@...il.com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] proc: export page young and skip_kasan_poison flag via
 kpageflags


On 6/3/22 2:28 AM, Matthew Wilcox wrote:
> On Thu, Jun 02, 2022 at 11:43:02PM +0800, Xin Hao wrote:
>> Now the young and skip_kasan_poison flag are supported in
> Why do we want userspace to know about whether skip_kasan_poison is set?
> That seems like a kernel-internal detail to me.

the  skip_kasan_poison also a page flags, we use page_types tool to 
display them not only include user-internal,

but also  kernel-internal, add them, the page-types tool can more detail 
display the kernel-internal page flags,

just in case we don't miss some page flags when check the whole memory.

-
Best Regards!
Xin Hao