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

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Date:   Mon, 16 May 2022 13:55:37 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Vasily Averin <vvs@...nvz.org>
Cc:     kernel@...nvz.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Steven Rostedt <rostedt@...dmis.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.

I already moved the previous version into mm-stable.  Would prefer not
to have to rebase it.

> v2: 1) re-based to 5.18-rc6
>     2) re-defined __def_gfpflag_names array according to
> 	akpm@, willy@ and Joe Perches recommendations

Please redo this against the mm-stable or mm-unstable branches against
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm, or against your
own previous version.

The new patch will simply switch to the gfpflag_string() trick, so it will
not be a "fix", so please let's position it as a "cleanup".