From: Oleg Nesterov <oleg@redhat.com>
To: kernel test robot <lkp@intel.com>
Cc: Boqun Feng <boqun.feng@gmail.com>, Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Rik van Riel <riel@surriel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Waiman Long <longman@redhat.com>, Will Deacon <will@kernel.org>,
oe-kbuild-all@lists.linux.dev, Alexey Gladkov <legion@kernel.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/5] seqlock: change __seqprop() to return the function pointer
Date: Wed, 13 Sep 2023 20:30:10 +0200 [thread overview]
Message-ID: <20230913183010.GA12423@redhat.com> (raw)
In-Reply-To: <202309140117.J5VH7p4z-lkp@intel.com>
On 09/14, kernel test robot wrote:
>
> Hi Oleg,
Hi kernel test robot, thank you very much.
> >> include/linux/u64_stats_sync.h:176:36: warning: passing argument 1 of '__seqprop_ptr' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
Yes, a lot of seqcount_t helpers pass the "const seqcount_t *s" to
__seqprop_ptr(s) and this is wrong.
Before this patch __seqprop(s) did "(void *)(s)" and this masked the
problem.
I've updated __seqprop_##lockname##_ptr() for this reason, but didn't
notice that __seqprop_ptr() should be changed too.
Oleg.
next prev parent reply other threads:[~2023-09-13 18:31 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-13 15:49 [PATCH 0/5] turn signal_struct.stats_lock into seqcount_rwlock_t Oleg Nesterov
2023-09-13 15:49 ` [PATCH 1/5] seqlock: simplify SEQCOUNT_LOCKNAME() Oleg Nesterov
2023-09-15 17:36 ` Alexey Gladkov
2023-09-16 8:51 ` Peter Zijlstra
2023-09-21 11:48 ` Oleg Nesterov
2023-09-21 14:04 ` Peter Zijlstra
2023-09-21 14:31 ` Oleg Nesterov
2023-09-13 15:49 ` [PATCH 2/5] seqlock: change __seqprop() to return the function pointer Oleg Nesterov
2023-09-13 17:37 ` kernel test robot
2023-09-13 18:30 ` Oleg Nesterov [this message]
2023-09-13 17:59 ` kernel test robot
2023-09-13 19:23 ` kernel test robot
2023-09-13 15:50 ` [PATCH 3/5] seqlock: introduce seqprop_lock/unlock Oleg Nesterov
2023-09-15 18:25 ` Alexey Gladkov
2023-09-15 18:43 ` Oleg Nesterov
2023-09-13 15:50 ` [PATCH 4/5] seqlock: introduce read_seqcount_begin_or_lock() and friends Oleg Nesterov
2023-09-13 15:50 ` [PATCH 5/5] time,signal: turn signal_struct.stats_lock into seqcount_rwlock_t Oleg Nesterov
2023-09-23 12:37 ` Alexey Gladkov
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