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Fri, 27 Feb 2026 04:51:36 -0800 (PST) Date: Fri, 27 Feb 2026 07:51:33 -0500 From: Johannes Weiner To: Hao Li Cc: mhocko@kernel.org, roman.gushchin@linux.dev, shakeel.butt@linux.dev, vbabka@suse.cz, harry.yoo@oracle.com, muchun.song@linux.dev, akpm@linux-foundation.org, cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH] memcg: fix slab accounting in refill_obj_stock() trylock path Message-ID: References: <20260226115145.62903-1-hao.li@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260226115145.62903-1-hao.li@linux.dev> On Thu, Feb 26, 2026 at 07:51:37PM +0800, Hao Li wrote: > In the trylock path of refill_obj_stock(), mod_objcg_mlstate() should > use the real alloc/free bytes (i.e., nr_acct) for accounting, rather > than nr_bytes. > > Fixes: 200577f69f29 ("memcg: objcg stock trylock without irq disabling") > Cc: stable@vger.kernel.org > Signed-off-by: Hao Li Oops. Yes, I suppose the contended case is quite rare (this is CPU local), so I'm not surprised this went unnoticed for so long. Acked-by: Johannes Weiner