[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PATCH v2 00/34] Split ptdesc from struct page
- To: "Vishal Moola (Oracle)" <vishal.moola@xxxxxxxxx>
- From: Jason Gunthorpe <jgg@xxxxxxxx>
- Date: Thu, 18 May 2023 09:12:04 -0300
- Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>, linux-mm@xxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-csky@xxxxxxxxxxxxxxx, linux-hexagon@xxxxxxxxxxxxxxx, loongarch@xxxxxxxxxxxxxxx, linux-m68k@xxxxxxxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxxx, linux-openrisc@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-riscv@xxxxxxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-sh@xxxxxxxxxxxxxxx, sparclinux@xxxxxxxxxxxxxxx, linux-um@xxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, Catalin Marinas <catalin.marinas@xxxxxxx>, Huacai Chen <chenhuacai@xxxxxxxxxx>, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>, Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>, Dinh Nguyen <dinguyen@xxxxxxxxxx>, Jonas Bonn <jonas@xxxxxxxxxxxx>, David Hildenbrand <david@xxxxxxxxxx>, Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>, Paul Walmsley <paul.walmsley@xxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Richard Weinberger <richard@xxxxxx>, Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>
- Delivery-date: Thu, 18 May 2023 12:12:33 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Mon, May 01, 2023 at 12:27:55PM -0700, Vishal Moola (Oracle) wrote:
> The MM subsystem is trying to shrink struct page. This patchset
> introduces a memory descriptor for page table tracking - struct ptdesc.
>
> This patchset introduces ptdesc, splits ptdesc from struct page, and
> converts many callers of page table constructor/destructors to use ptdescs.
Lightly related food for future thought - based on some discussions at
LSF/MM it would be really nice if an end result of this was that a
rcu_head was always available in the ptdesc so we don't need to
allocate memory to free a page table.
Jason
|
