From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9A95BD277CA for ; Sat, 10 Jan 2026 04:01:19 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 976A26B00A0; Fri, 9 Jan 2026 23:01:03 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 6674C6B009F; Fri, 9 Jan 2026 23:01:03 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3F57A6B0089; Fri, 9 Jan 2026 23:01:03 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 755246B009D for ; Fri, 9 Jan 2026 23:01:02 -0500 (EST) Received: from smtpin14.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 32297140119 for ; Sat, 10 Jan 2026 04:01:02 +0000 (UTC) X-FDA: 84314703564.14.E507D1D Received: from zeniv.linux.org.uk (zeniv.linux.org.uk [62.89.141.173]) by imf04.hostedemail.com (Postfix) with ESMTP id 535954000E for ; Sat, 10 Jan 2026 04:01:00 +0000 (UTC) Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=linux.org.uk header.s=zeniv-20220401 header.b=f7gmULfr; spf=none (imf04.hostedemail.com: domain of viro@ftp.linux.org.uk has no SPF policy when checking 62.89.141.173) smtp.mailfrom=viro@ftp.linux.org.uk; dmarc=pass (policy=none) header.from=zeniv.linux.org.uk ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1768017660; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=l2LUE689TUBjRJhqWoI4FSTJJqCMuaDthYKZkiYtSho=; b=KvnOgOQBoI5rpVEG0UWvu6cmu77q5wVkYR0rluXfLHblB1/xMDOh1ISTz/d0N9ppFVwxrh WomEvhrqMalUSQ/RuInRE95p+K2BLDOx4F4Y5ybmlNxpc8/v4AEeZE4N+bSI6323u/jmOc JLUrdrpLCb4NjlJRA9tcARpgBKBVUSA= ARC-Authentication-Results: i=1; imf04.hostedemail.com; dkim=pass header.d=linux.org.uk header.s=zeniv-20220401 header.b=f7gmULfr; spf=none (imf04.hostedemail.com: domain of viro@ftp.linux.org.uk has no SPF policy when checking 62.89.141.173) smtp.mailfrom=viro@ftp.linux.org.uk; dmarc=pass (policy=none) header.from=zeniv.linux.org.uk ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1768017660; a=rsa-sha256; cv=none; b=aAnnCa90fz3k0lVLpi3FEpDxDRbZzRheRg2wsZKJnCbkmiSCBfPfvpfOCcY9hFW9k+EO7u WwlX3whrwwTQv2uMyOZVlN2rqspqd8MjU9G1NjNhhetMK3Illw8evGg7eEFOzRXmTXkqby qk+9lfhxuCC4KxBH24TyA0+1TudNW6w= 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=l2LUE689TUBjRJhqWoI4FSTJJqCMuaDthYKZkiYtSho=; b=f7gmULfr1QczamnpQvpHORoB4Y cZlsW62CiHl2hZNjtSkrAMYnzAg+3ee4NzKQD0cwRhquSK8F9gIfJ55AnPDVTVn9irnM/Z4tVByIo mNFfBFW/wtmlpUsXUkMbOAMkVaYS+Plk/C56B9IAwv6/tGEwb/U8D4KAW4Rmy84/s1u/9SnOxy/Yg OW32w/DQT73dGjLsm4GxcsQqJZJEflD08QiKHs0aH4w1/hmnRzseN7XuTSLbTjuX3oWpFMtUSiJhS xuXBl4Li9Uu6V4rIOFZ2+yJcSbT9wwml/ntSivby0LL+rtss9AuCL2xRHuodRJy6wp38eRtGM5k4a Qj0W5Xpw==; Received: from viro by zeniv.linux.org.uk with local (Exim 4.99 #2 (Red Hat Linux)) id 1veQB9-000000085aJ-2fZG; 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 12/15] turn task_struct_cachep static-duration Date: Sat, 10 Jan 2026 04:02:14 +0000 Message-ID: <20260110040217.1927971-13-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> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: ns3q6stf39akw4baiwz6yb7f953xuqof X-Rspamd-Queue-Id: 535954000E X-Rspam-User: X-Rspamd-Server: rspam02 X-HE-Tag: 1768017660-703836 X-HE-Meta: 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 GqY38/Qx 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 f83ca2f5826f..8f0dfefd82f0 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -178,7 +178,8 @@ void __weak arch_release_task_struct(struct task_struct *tsk) { } -static struct kmem_cache *task_struct_cachep; +static struct kmem_cache_opaque task_struct_cache; +#define task_struct_cachep to_kmem_cache(&task_struct_cache) static inline struct task_struct *alloc_task_struct_node(int node) { @@ -860,7 +861,7 @@ void __init fork_init(void) /* create a slab on which task_structs can be allocated */ task_struct_whitelist(&useroffset, &usersize); - task_struct_cachep = kmem_cache_create_usercopy("task_struct", + kmem_cache_setup_usercopy(task_struct_cachep, "task_struct", arch_task_struct_size, align, SLAB_PANIC|SLAB_ACCOUNT, useroffset, usersize, NULL); -- 2.47.3