From nobody Mon Feb 9 23:15:19 2026 Received: from zeniv.linux.org.uk (zeniv.linux.org.uk [62.89.141.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4873B280A29; Sat, 10 Jan 2026 04:01:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=62.89.141.173 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768017666; cv=none; b=avQKeeRSA2hjAbCmx6GUOg6jAnYT4A44CjCfkpcv8I4SjgPkzgibqxqyX2QFMBx7cwU+5hZeIiqbTc88EvU/yviM7M3MLqsQqeNnaJwLH5vlkVWKrfpu/1kNbjn6ZVr5a4p4PxbQkj+X424ddxbQcXV6Sk65YnZDf2OiFR4Imd8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768017666; c=relaxed/simple; bh=tKP1aoJsMshShmP7ntwoPS9EYaOrFv/7/uBuq6JO8AE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=utyglzB5/UFDStq/iqZzGbKrDabTVNCkyBVqOFz2ZqBy5QafOLI6hN4VTx1damoFgoXWzlrk6uG3dHLWiz6INzkZlWl/tG/w/ZCOtqjMNRfQR1VlO2Ks0Qoy6dRI4CvYuQuoTkgCvPb9LPz706fNOREi0vtX+xIApCzvqh6oN1E= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zeniv.linux.org.uk; spf=none smtp.mailfrom=ftp.linux.org.uk; dkim=pass (2048-bit key) header.d=linux.org.uk header.i=@linux.org.uk header.b=HIWKl4Pf; arc=none smtp.client-ip=62.89.141.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zeniv.linux.org.uk Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=ftp.linux.org.uk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linux.org.uk header.i=@linux.org.uk header.b="HIWKl4Pf" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=linux.org.uk; s=zeniv-20220401; h=Sender:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description; bh=QpWF0f2SP02fz5D0RQUbdZlrc1oKAOcosJWDE+NgvuA=; b=HIWKl4PfjCkBCTB/oOEIVkqj+Z 5YZATPeRZsWeb5vCSUWK70sBsvb74NkrcRaT0oNRKQE4hJQ5UBuYKTklpm3XIvq1nU3MB8Jz+gMND tC+3u4TJG4qPy/Osswy1K8O5OgMZKWvJa4TeC58hXAly6rJvcF6Vzyd8wcETf7aibPEz9N3gcfixj 2n9si2f/S8XjgWiMe/3QCRqzvSlg7n84lcXieqIx51vwa1zc3yb3/uS/tvoHF0nzLqCDcLB51T9Wr U6/+JW5R9eXd0o6pSLUjxrxzEpnR06tjBb8qthBJ+kLFOPV9RQIe06B2i9RWSmbeyC9JsHc+pZGV0 RwJtMCUw==; Received: from viro by zeniv.linux.org.uk with local (Exim 4.99 #2 (Red Hat Linux)) id 1veQB9-000000085aC-2Hni; Sat, 10 Jan 2026 04:02:19 +0000 From: Al Viro To: linux-mm@kvack.org Cc: Vlastimil Babka , Harry Yoo , linux-fsdevel@vger.kernel.org, Linus Torvalds , Christian Brauner , Jan Kara , Mateusz Guzik , linux-kernel@vger.kernel.org Subject: [RFC PATCH 11/15] turn mm_cachep static-duration Date: Sat, 10 Jan 2026 04:02:13 +0000 Message-ID: <20260110040217.1927971-12-viro@zeniv.linux.org.uk> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260110040217.1927971-1-viro@zeniv.linux.org.uk> References: <20260110040217.1927971-1-viro@zeniv.linux.org.uk> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: Al Viro Content-Type: text/plain; charset="utf-8" Signed-off-by: Al Viro --- kernel/fork.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/kernel/fork.c b/kernel/fork.c index d5b7e4d51596..f83ca2f5826f 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -478,7 +478,8 @@ struct kmem_cache_opaque files_cache; struct kmem_cache *fs_cachep; =20 /* SLAB cache for mm_struct structures (tsk->mm) */ -static struct kmem_cache *mm_cachep; +static struct kmem_cache_opaque mm_cache; +#define mm_cachep to_kmem_cache(&mm_cache) =20 static void account_kernel_stack(struct task_struct *tsk, int account) { @@ -3011,7 +3012,7 @@ void __init mm_cache_init(void) */ mm_size =3D sizeof(struct mm_struct) + cpumask_size() + mm_cid_size(); =20 - mm_cachep =3D kmem_cache_create_usercopy("mm_struct", + kmem_cache_setup_usercopy(mm_cachep, "mm_struct", mm_size, ARCH_MIN_MMSTRUCT_ALIGN, SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_ACCOUNT, offsetof(struct mm_struct, saved_auxv), --=20 2.47.3