linux-kernel - RE: [PATCH 0/2] mm: Explicitly check & doc fragsz limit

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Message-ID:
 <MN0PR21MB3437DAF312FA4DF8F7D01E6BCAB22@MN0PR21MB3437.namprd21.prod.outlook.com>
Date: Tue, 15 Apr 2025 21:40:55 +0000
From: Haiyang Zhang <haiyangz@...rosoft.com>
To: "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>, "corbet@....net"
	<corbet@....net>, "linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>, "Mike Rapoport
 (Microsoft)" <rppt@...nel.org>, Mike Rapoport <mikerapoport@...rosoft.com>
CC: Dexuan Cui <decui@...rosoft.com>, KY Srinivasan <kys@...rosoft.com>, Paul
 Rosswurm <paulros@...rosoft.com>, "olaf@...fle.de" <olaf@...fle.de>, vkuznets
	<vkuznets@...hat.com>, "davem@...emloft.net" <davem@...emloft.net>,
	"wei.liu@...nel.org" <wei.liu@...nel.org>, Long Li <longli@...rosoft.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 0/2] mm: Explicitly check & doc fragsz limit



> -----Original Message-----
> From: LKML haiyangz <lkmlhyz@...rosoft.com> On Behalf Of Haiyang Zhang
> Sent: Thursday, April 3, 2025 5:22 PM
> To: linux-hyperv@...r.kernel.org; akpm@...ux-foundation.org;
> corbet@....net; linux-mm@...ck.org; linux-doc@...r.kernel.org
> Cc: Haiyang Zhang <haiyangz@...rosoft.com>; Dexuan Cui
> <decui@...rosoft.com>; KY Srinivasan <kys@...rosoft.com>; Paul Rosswurm
> <paulros@...rosoft.com>; olaf@...fle.de; vkuznets <vkuznets@...hat.com>;
> davem@...emloft.net; wei.liu@...nel.org; Long Li <longli@...rosoft.com>;
> linux-kernel@...r.kernel.org
> Subject: [PATCH 0/2] mm: Explicitly check & doc fragsz limit
> 
> The page frag allocator is not designed for fragsz > PAGE_SIZE.
> Explicitly check it in the function & document the fragsz limit.
> 
> Haiyang Zhang (2):
>   mm: page_frag: Check fragsz at the beginning of
> __page_frag_alloc_align()
>   docs/mm: Specify page frag size is not bigger than PAGE_SIZE
> 
>  Documentation/mm/page_frags.rst |  2 +-
>  mm/page_frag_cache.c            | 22 +++++++++-------------
>  2 files changed, 10 insertions(+), 14 deletions(-)
> 

+@...e Rapoport (Microsoft) <rppt@...nel.org>
Hi Mike, since you have a lot experience in mm subsystem, could you please 
review my patch set?

Thanks,
- Haiyang