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

[Haiyang Zhang]

> -----Original Message-----
> From: LKML haiyangz <lkmlhyz@xxxxxxxxxxxxx> On Behalf Of Haiyang Zhang
> Sent: Thursday, April 3, 2025 5:22 PM
> To: linux-hyperv@xxxxxxxxxxxxxxx; akpm@xxxxxxxxxxxxxxxxxxxx;
> corbet@xxxxxxx; linux-mm@xxxxxxxxx; linux-doc@xxxxxxxxxxxxxxx
> Cc: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>; Dexuan Cui
> <decui@xxxxxxxxxxxxx>; KY Srinivasan <kys@xxxxxxxxxxxxx>; Paul Rosswurm
> <paulros@xxxxxxxxxxxxx>; olaf@xxxxxxxxx; vkuznets <vkuznets@xxxxxxxxxx>;
> davem@xxxxxxxxxxxxx; wei.liu@xxxxxxxxxx; Long Li <longli@xxxxxxxxxxxxx>;
> linux-kernel@xxxxxxxxxxxxxxx
> 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(-)
> 

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

Thanks,
- Haiyang