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t=1792137278; bh=Wv9SRxWQ25pNAKGW38KUgKHliKUCOnNxndAUVFEo+TI=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=D0GM1obRxZ4b+2H3T7h8p3NTacDTVcwAIILo+zsG155txmJVR0hYAeEhM3EjzFNgK q3QqupxRe4rlN7PsfyTnw7+EHeQk/iO51sInKcpFSLeeoYkkzadGPbKkIYsRMoCa1B szn6S8d9BmJkfgNSifEZHYcK/+HCAEwtnsZTFSLtW4WDJ8kFfJkApP9tF628X13zXv ZBMoYlI4FQLjEdH0qePl2xrzo/Biurt/B00shjQjUc2mX4u9zoFjVEiJmFEub8P0pW se/FmSO13DVkBrklvuqt5CM1HjH0OWA9hUVY8yhttkeraQi3Wkmh+5qvoIQz3mSS6t be3Zn5Qpdy/lw== Message-ID: Date: Fri, 16 Oct 2026 09:54:33 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm/mempolicy: convert mempolicy refcnt to refcount_t To: "Gregory Price (Meta)" , linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com, akpm@linux-foundation.org, ziy@nvidia.com, joshua.hahnjy@gmail.com, rakie.kim@sk.com, ying.huang@linux.alibaba.com, kernel test robot References: <20261015231322.3392551-1-gourry@gourry.net> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Stat-Signature: xp1mwyboy7uezwgrbhgwxtxwzwp8uge8 X-Rspamd-Queue-Id: C8753180009 X-Rspam-User: X-Rspamd-Server: rspam02 X-HE-Tag: 1792137279-186762 X-HE-Meta: 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 sXq4LLcb +uwvaHygVwRbGgeKBhhFuF+tFrk5OO1+tDZxPvljtxjkbNRTN0J3un+AosIdmNx9XRdYpC4iltxe5eoolRmy4ppN/geFfKYnbj+lBp+AQ9Rz2NdQG7q8KQEX657umLxXvpCRcyWwDTUrF18D8zAIjcZuokQn5u1RTxGar3Pl7w+X/UmegIRHP+9XnrF7zXUhLZ1R0HSNwjbDc8K7/yl1M7gTbG9VtecrLV87GORKa7jm++xOSaRqdKE7zCMT3jAyh5e/75JEBMD2rof329lLAu/xzsb7Nx6f2QmXqoWF89qa/lZdCDSHNyNg8x/k5bkjW1WurzPFCJB9Iea0jtViJI0YJ3SHnI6smfJag9wgLSUIXdAD+12ETSFWFSQYxj89U5d0U/jhlVJkwx7MeVDlw2mfaiBjcMMSkMcaV5gKPUKoMOi6TUVcrrQ1Nmv2v+lEoWXzo5+V0xcbc+mMfiAx9FDK9etkJ/l4HKzm3gy2dZ8EfJAY= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 10/16/26 01:13, Gregory Price (Meta) 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. > > Reported-by: kernel test robot > Closes: https://lore.kernel.org/oe-kbuild-all/202610061946.Bx22ZFrw-lkp@intel.com/ > Signed-off-by: Gregory Price (Meta) > --- Wondering if we want a Fixes? If this only fixes cocci warnings I guess not. Acked-by: David Hildenbrand (Arm) -- Cheers, David