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From: Hao Li To: "Vlastimil Babka (SUSE)" Cc: Harry Yoo , Christoph Lameter , David Rientjes , Roman Gushchin , Suren Baghdasaryan , Alexei Starovoitov , Andrew Morton , Johannes Weiner , Michal Hocko , Shakeel Butt , Alexander Potapenko , Marco Elver , Dmitry Vyukov , kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org Subject: Re: [PATCH v2 12/16] mm/slab: pass slab_alloc_context to __do_kmalloc_node() Message-ID: References: <20260610-slab_alloc_flags-v2-0-7190909db118@kernel.org> <20260610-slab_alloc_flags-v2-12-7190909db118@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260610-slab_alloc_flags-v2-12-7190909db118@kernel.org> X-Migadu-Flow: FLOW_OUT X-Rspam-User: X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: DCCB1A0005 X-Stat-Signature: anpycaifdix1k3gcsurgcckc64gdob3f X-HE-Tag: 1781242513-497066 X-HE-Meta: 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 Q0ITmPdX e8m87GptxEXESkPiG7mQFSn+MbY4BoFiQPv1VH1m0zXhi4RkkgdgafjpaWEVUHoF066EJ+CyDoeejWSwIb/N9A25DiTu0OIQhnPAfHtuySflHJssgDbftbXHGahtV37vc6jSQ4xPfxbkDrKZzH3LeFeWWyq8gM0IEDBHZKdVBy2dkvP18of/z9Pa4qEwWvaBPpPr4G5t99Vg4/ycGtLP2jxpaa0zgwnAsA3h5PB23ms2PsICi9WS1F+sxV4jbGLGZJ7d4VP0qj5mV15oh61z2/QTBPQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Jun 10, 2026 at 05:40:14PM +0200, Vlastimil Babka (SUSE) wrote: > With alloc_flags usage in slab, we can replace __GFP_NO_OBJ_EXT with an > alloc flag that prevents kmalloc recursion. For that we need a version > of kmalloc() that takes alloc_flags and use it in places that perform > these potentially recursive kmalloc allocations (of sheaves or obj_ext > arrays). > > As a preparatory step, make __do_kmalloc_node() take a pointer to > slab_alloc_context. This replaces the 'caller' parameter and includes > alloc_flags which we'll make use of. > > Signed-off-by: Vlastimil Babka (SUSE) > --- Reviewed-by: Hao Li -- Thanks, Hao