Re: [PATCH v2 bpf-next 1/3] mm: Enforce VM_IOREMAP flag and range in ioremap_page_range.

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

On Fri, Feb 23, 2024 at 03:57:26PM -0800, Alexei Starovoitov wrote:
> From: Alexei Starovoitov <ast@xxxxxxxxxx>
> 
> There are various users of get_vm_area() + ioremap_page_range() APIs.
> Enforce that get_vm_area() was requested as VM_IOREMAP type and range passed 
> to
> ioremap_page_range() matches created vm_area to avoid accidentally ioremap-ing
> into wrong address range.

Nit: overly long lines in the commit message here.

Otherwise looks good:

Reviewed-by: Christoph Hellwig <hch@xxxxxx>