From: SJ Park <sj@kernel.org>
To: "Gregory Price (Meta)" <gourry@gourry.net>
Cc: SJ Park <sj@kernel.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
kernel-team@meta.com, akpm@linux-foundation.org,
david@kernel.org, ziy@nvidia.com, joshua.hahnjy@gmail.com,
rakie.kim@sk.com, ying.huang@linux.alibaba.com,
kernel test robot <lkp@intel.com>
Subject: Re: [PATCH] mm/mempolicy: convert mempolicy refcnt to refcount_t
Date: Thu, 15 Oct 2026 16:46:24 -0700 [thread overview]
Message-ID: <20261015234625.113115-1-sj@kernel.org> (raw)
In-Reply-To: <20261015231322.3392551-1-gourry@gourry.net>
On Thu, 15 Oct 2026 19:13:22 -0400 "Gregory Price (Meta)" <gourry@gourry.net> wrote:
> struct mempolicy uses an atomic_t as a pure reference counter.
>
> Convert it to refcount_t so that overflow and underflow are caught
> by the refcount saturation checks.
>
> This silences the atomic_as_refcounter.cocci warning, which started
> matching __mpol_put() when it switched kmem_cache_free() to kfree_rcu().
>
> No functional change for correct callers.
Looks correct to me.
>
> Reported-by: kernel test robot <lkp@intel.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202610061946.Bx22ZFrw-lkp@intel.com/
> Signed-off-by: Gregory Price (Meta) <gourry@gourry.net>
Reviewed-by: SJ Park <sj@kernel.org>
Thanks,
SJ
[...]
prev parent reply other threads:[~2026-10-15 23:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-15 23:13 [PATCH] mm/mempolicy: convert mempolicy refcnt to refcount_t Gregory Price (Meta)
2026-10-15 23:46 ` SJ Park [this message]
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