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t=1785505968; bh=cDEHYu+1/dZP45QPh68o+tAnVQBCZEowl8E2/iwoQoc=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=D0y+qJ3DABboRQb60kuGNjDtOgqw38ZaBeCzQ9tZVgoXDBxDijdVnq49T9BPLVnWc qPNgJCPgkUkC6HgEvUw/cqle+HO5Wqj0umQtyWK2KcI8MU4ICo7VtlvHNUSNfsDTqX wEiy43u8bFodHNHkdAupn6lRtCs5sp6L2XLFHfOURqEIiFwwcCswMMFj5oY+P1jxvi UT0YcZRzTkhGAu01Ghdh/Kbouw+1FmUT/sZSl8tH51oHtIpL1YvmqZWyxxfCvLv7ze zBdPv9SLGfn/1Zgcrm1NiCLLkY3kFuTvNNSZ/l0Rdd+XcsXUgBaFg+3TJ59EgEbXC1 uoRQMBmjjHE9A== Message-ID: <4b87664a-9ec6-4499-bc35-8c6f022f0881@kernel.org> Date: Fri, 31 Jul 2026 15:52:44 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 08/13] mm/slab: change struct slabobj_ext to a union Content-Language: en-US To: Hao Li Cc: Harry Yoo , Suren Baghdasaryan , Shakeel Butt , Alexander Potapenko , Marco Elver , Andrew Morton , Christoph Lameter , David Rientjes , Roman Gushchin , linux-mm@kvack.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org References: <20260727-b4-objext_split-v3-0-c29ef0f1f257@kernel.org> <20260727-b4-objext_split-v3-8-c29ef0f1f257@kernel.org> From: "Vlastimil Babka (SUSE)" Autocrypt: addr=vbabka@kernel.org; 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>> #if defined(CONFIG_SLAB_OBJ_EXT) && defined(CONFIG_64BIT) >> if (slab_args_unmergeable(args, s->flags) && >> - (aligned_size - size >= sizeof(struct slabobj_ext))) >> + (aligned_size - size >= cache_obj_ext_size(s))) > > Nit: cache_obj_ext_size() could return 0, and the checking will always be true. > But I think this is harmless. Yeah should be harmless as then no objexts are used for the cache anyway. Thanks! >> s->flags |= SLAB_OBJ_EXT_IN_OBJ; >> #endif >> size = aligned_size; >> >> -- >> 2.55.0 >> >