From nobody Mon Dec 1 22:04:01 2025 Received: from out-186.mta0.migadu.com (out-186.mta0.migadu.com [91.218.175.186]) (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 415022EFD95 for ; Fri, 28 Nov 2025 11:03:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.186 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764327797; cv=none; b=C2jmeXn6LDxAO/zIuF8nTtrL6kG7y0XlHYLDZu7uVrN5XOF7DHa/7BRPVJGZat7VIe5zf2IrNC2gd85C035aZQqQglJzw0Jp8YmycvXAfKBO5EH1luKAUxrExIuGh4bG10RyWVg9Yozch3+lFgMEygZJcgb88Pw7p5HW8ZUUNrk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764327797; c=relaxed/simple; bh=IF48dLOCek4+yD2ZA2a/DMrBFACro6x3Bu+g9g5SG0c=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=LW75NQitRMXDhrih8gs7lpMxfGJ97y3/kVQLyEw7gHN+qlgddrma5L3s8IXPuB6xgcELK19ps9I6re3007gKg69RlSq3NxRiK/M+lczayhqC/5bzeMeTqHZlwujjM5UmVLuQ/IPBkxoGRmqNEMQPCQGW+fbJkdmFHGCWnWdEWzc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=E66xgJpp; arc=none smtp.client-ip=91.218.175.186 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="E66xgJpp" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1764327789; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=KOhj+NoWnqwi6LvTWbfrvrYcRtxIq25xmrYqKSoPDfk=; b=E66xgJppFa7C8eV+Q9htyF3j8lduDQg7MjatMihuPVjL0/WRw80xM6qNNRJ75Gd6hBkIan ipQYIDtPItJ0lKlBEbR87gnE5IOdaHxUyTN/MCbmWOL7WzQdQ8q4p0fKWBjFbyZpv970g5 QYhSZnSKVfxrUeHr2SO/Mx7aLELOo/4= From: Fushuai Wang To: muchun.song@linux.dev, osalvador@suse.de, david@kernel.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, wangfushuai@baidu.com, Fushuai Wang Subject: [PATCH] hugetlb: Add guard support Date: Fri, 28 Nov 2025 19:02:41 +0800 Message-Id: <20251128110241.78580-1-fushuai.wang@linux.dev> 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 X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" Introduce guard support to simplify the usage of the hugetlb_vma_{lock,unlock}_{read,write}. Signed-off-by: Fushuai Wang --- include/linux/hugetlb.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 8e63e46b8e1f..f97cb2f123a3 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -15,6 +15,7 @@ #include #include #include +#include =20 struct ctl_table; struct user_struct; @@ -468,6 +469,13 @@ static inline void hugetlb_split(struct vm_area_struct= *vma, unsigned long addr) =20 #endif /* !CONFIG_HUGETLB_PAGE */ =20 +DEFINE_GUARD(hugetlb_vma_read, struct vm_area_struct *, + hugetlb_vma_lock_read(_T), hugetlb_vma_unlock_read(_T)) + +DEFINE_GUARD(hugetlb_vma_write, struct vm_area_struct *, + hugetlb_vma_lock_write(_T), hugetlb_vma_unlock_write(_T)) +DEFINE_GUARD_COND(hugetlb_vma_write, _try, hugetlb_vma_trylock_write(_T)) + #ifndef pgd_write static inline int pgd_write(pgd_t pgd) { --=20 2.36.1