Re: [PATCH mm-unstable v1 20/20] mm: rename FOLL_FORCE to FOLL_PTRACE
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- To: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
- Subject: Re: [PATCH mm-unstable v1 20/20] mm: rename FOLL_FORCE to FOLL_PTRACE
- From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
- Date: Fri, 18 Nov 2022 12:09:02 +0100
- Cc: David Hildenbrand <david@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, linux-alpha@xxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, sparclinux@xxxxxxxxxxxxxxx, linux-um@xxxxxxxxxxxxxxxxxxx, etnaviv@xxxxxxxxxxxxxxxxxxxxx, dri-devel@xxxxxxxxxxxxxxxxxxxxx, linux-samsung-soc@xxxxxxxxxxxxxxx, linux-rdma@xxxxxxxxxxxxxxx, linux-media@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-perf-users@xxxxxxxxxxxxxxx, linux-security-module@xxxxxxxxxxxxxxx, linux-kselftest@xxxxxxxxxxxxxxx, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxx>, John Hubbard <jhubbard@xxxxxxxxxx>, Peter Xu <peterx@xxxxxxxxxx>, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, Andrea Arcangeli <aarcange@xxxxxxxxxx>, Hugh Dickins <hughd@xxxxxxxxxx>, Nadav Amit <namit@xxxxxxxxxx>, Vlastimil Babka <vbabka@xxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>, Mike Kravetz <mike.kravetz@xxxxxxxxxx>, Muchun Song <songmuchun@xxxxxxxxxxxxx>, Shuah Khan <shuah@xxxxxxxxxx>, Lucas Stach <l.stach@xxxxxxxxxxxxxx>, David Airlie <airlied@xxxxxxxxx>, Oded Gabbay <ogabbay@xxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Alex Williamson <alex.williamson@xxxxxxxxxx>, Oleg Nesterov <oleg@xxxxxxxxxx>, Richard Henderson <richard.henderson@xxxxxxxxxx>, Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx>, Matt Turner <mattst88@xxxxxxxxx>, Catalin Marinas <catalin.marinas@xxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Nicholas Piggin <npiggin@xxxxxxxxx>, Christophe Leroy <christophe.leroy@xxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Richard Weinberger <richard@xxxxxx>, Anton Ivanov <anton.ivanov@xxxxxxxxxxxxxxxxxx>, Johannes Berg <johannes@xxxxxxxxxxxxxxxx>, Eric Biederman <ebiederm@xxxxxxxxxxxx>, Kees Cook <keescook@xxxxxxxxxxxx>, Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>, Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>, Mark Rutland <mark.rutland@xxxxxxx>, Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>, Jiri Olsa <jolsa@xxxxxxxxxx>, Namhyung Kim <namhyung@xxxxxxxxxx>, Kentaro Takeda <takedakn@xxxxxxxxxxxxx>, Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>, Paul Moore <paul@xxxxxxxxxxxxxx>, James Morris <jmorris@xxxxxxxxx>, "Serge E. Hallyn" <serge@xxxxxxxxxx>
- In-reply-to: <CAHk-=wgtEwpR-rE_=cXzecHMZ+zgrx5zf9UfvH0w-mKgckn4=Q@mail.gmail.com>
- References: <20221116102659.70287-1-david@redhat.com> <20221116102659.70287-21-david@redhat.com> <CAHk-=wgtEwpR-rE_=cXzecHMZ+zgrx5zf9UfvH0w-mKgckn4=Q@mail.gmail.com>
On Wed, Nov 16, 2022 at 10:16:34AM -0800, Linus Torvalds wrote:
> Following the history of it is a big of a mess, because there's a
> number of renamings and re-organizations, but it seems to go back to
> 2007 and commit b6a2fea39318 ("mm: variable length argument support").
I went back and read parts of the discussions with Ollie, and the
.force=1 thing just magically appeared one day when we were sending
work-in-progress patches back and forth without mention of where it came
from :-/
And I certainly can't remember now..
Looking at it now, I have the same reaction as both you and Kees had, it
seems entirely superflous. So I'm all for trying to remove it.
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