linux-kernel - Re: [ammarfaizi2-block:axboe/linux-block/for-next 91/112] include/trace/events/nilfs2.h:191:1: sparse: sparse: cast to restricted blk_opf

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Date:   Sun, 17 Jul 2022 07:50:46 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     kernel test robot <lkp@...el.com>
Cc:     kbuild-all@...ts.01.org, Ammar Faizi <ammarfaizi2@...weeb.org>,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org, Jens Axboe <axboe@...nel.dk>,
        Ryusuke Konishi <konishi.ryusuke@...il.com>
Subject: Re: [ammarfaizi2-block:axboe/linux-block/for-next 91/112]
 include/trace/events/nilfs2.h:191:1: sparse: sparse: cast to restricted
 blk_opf_t

On 7/16/22 08:40, kernel test robot wrote:
> sparse warnings: (new ones prefixed by >>)
>     fs/nilfs2/segment.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, include/trace/events/nilfs2.h):
>>> include/trace/events/nilfs2.h:191:1: sparse: sparse: cast to restricted blk_opf_t
>>> include/trace/events/nilfs2.h:191:1: sparse: sparse: cast to restricted blk_opf_t
>>> include/trace/events/nilfs2.h:191:1: sparse: sparse: restricted blk_opf_t degrades to integer
>>> include/trace/events/nilfs2.h:191:1: sparse: sparse: restricted blk_opf_t degrades to integer

I think the root cause of this and similar reports is in the tracing 
core core. I will post a patch.

Thanks,

Bart.