Re: [PATCH v4 bpf-next 2/2] mm: Introduce VM_SPARSE kind and vm_area_[un]map_pages().

To: Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx>
Subject: Re: [PATCH v4 bpf-next 2/2] mm: Introduce VM_SPARSE kind and vm_area_[un]map_pages().
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Wed, 6 Mar 2024 06:19:25 -0800
Cc: bpf@xxxxxxxxxxxxxxx, daniel@xxxxxxxxxxxxx, andrii@xxxxxxxxxx, torvalds@xxxxxxxxxxxxxxxxxxxx, brho@xxxxxxxxxx, hannes@xxxxxxxxxxx, lstoakes@xxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, urezki@xxxxxxxxx, hch@xxxxxxxxxxxxx, rppt@xxxxxxxxxx, boris.ostrovsky@xxxxxxxxxx, sstabellini@xxxxxxxxxx, jgross@xxxxxxxx, linux-mm@xxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, kernel-team@xxxxxx
In-reply-to: <20240305030516.41519-3-alexei.starovoitov@gmail.com>
References: <20240305030516.41519-1-alexei.starovoitov@gmail.com> <20240305030516.41519-3-alexei.starovoitov@gmail.com>

I'd still prefer to hide the vm_area, but for now:

Reviewed-by: Christoph Hellwig <hch@xxxxxx>

Follow-Ups:
- Re: [PATCH v4 bpf-next 2/2] mm: Introduce VM_SPARSE kind and vm_area_[un]map_pages().
  - From: Alexei Starovoitov

References:
- [PATCH v4 bpf-next 0/2] mm: Enforce ioremap address space and introduce sparse vm_area
  - From: Alexei Starovoitov
- [PATCH v4 bpf-next 2/2] mm: Introduce VM_SPARSE kind and vm_area_[un]map_pages().
  - From: Alexei Starovoitov