linux-kernel - Re: [PATCH mm v2] tracing: incorrect gfp

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Date:   Sun, 15 May 2022 18:09:03 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Vasily Averin <vvs@...nvz.org>
Cc:     Ingo Molnar <mingo@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Matthew Wilcox <willy@...radead.org>,
        Joe Perches <joe@...ches.com>, kernel@...nvz.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH mm v2] tracing: incorrect gfp_t conversion

On Wed, 11 May 2022 10:20:39 +0300
Vasily Averin <vvs@...nvz.org> wrote:

> Fixes the following sparse warnings:
> 
> include/trace/events/*: sparse: cast to restricted gfp_t
> include/trace/events/*: sparse: restricted gfp_t degrades to integer
> 
> gfp_t type is bitwise and requires __force attributes for any casts.
> 
> Signed-off-by:	Vasily Averin <vvs@...nvz.org>
> ---
> v2: 1) re-based to 5.18-rc6
>     2) re-defined __def_gfpflag_names array according to
> 	akpm@, willy@ and Joe Perches recommendations
> ---
>  include/linux/gfp.h               |  2 +-
>  include/trace/events/btrfs.h      |  4 +-
>  include/trace/events/compaction.h |  4 +-
>  include/trace/events/kmem.h       | 12 ++---
>  include/trace/events/mmflags.h    | 84 ++++++++++++++++---------------
>  include/trace/events/vmscan.h     | 16 +++---
>  mm/compaction.c                   |  2 +-
>  7 files changed, 63 insertions(+), 61 deletions(-)

>From the tracing POV:

Acked-by: Steven Rostedt (Google) <rostedt@...dmis.org>

-- Steve