From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f177.google.com (mail-oi1-f177.google.com [209.85.167.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 16DD9389470 for ; Wed, 7 Jan 2026 15:34:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.177 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767800048; cv=none; b=QVY/M2BFnMjulBhBOsEkC0wGzz4W1HkBYLw3EL+uJjV51W4KCbg//iPPTQJO6nMBwYYoHzd/YcojaQQZvVr3dZT+GJ6abRgI5tCfaLuIgfpVZvwYKEFz1YLE0tMufr8nat2LJScjHlEdJlcnusvc5SMwCgzKiQz8LeAsL3Mi7Y0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767800048; c=relaxed/simple; bh=rXk3y4C8WJeOSfMI8cZ5ZlL/TCkv73ERx5NvQkCSpyA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=olTVSlzPsAb20YNfOv8sTpg6N4F+iLrz2Q8KH4ZqEpt5dOJro7+kspSwiWOrn44/zHkBI7lP+4D66ltG8wN8OGTbOQpL+b5k8gkT2RzZqFMxEA/JtWdMSBXmXoqAj/NneF8vOO8Y2FMJdE/IgUmxowC2s6+FaDzOUafL4ajh6Cs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=Groves.net; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=G4GZnOim; arc=none smtp.client-ip=209.85.167.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=Groves.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="G4GZnOim" Received: by mail-oi1-f177.google.com with SMTP id 5614622812f47-459ac606f0bso1285262b6e.0 for ; Wed, 07 Jan 2026 07:34:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1767800045; x=1768404845; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:sender:from:to:cc:subject:date :message-id:reply-to; bh=nEjVEszBS1bXBch+QTu9nax0OtrFw3AqtXa5XoSe9fA=; b=G4GZnOimGKYLaHQGRjcwbXlnk11Hf9ZpstIvvG+0jiRuMet2ipinn4hboqAiV/4XKU yZo4+HdbHWHL/gZz9FrZ95shPbqvj8ssUBjlKn3Ca3futo8WkJmJDXdA1vN9p3X2qt6A qi4bBIojc8Pzmcyy06LC47Hk53pQHCRdibIi0tfU/kCsHXrVqe1DzFmXUhC50GkGRWb2 52lVIoswD4+b0GJM6x0ps+eK+B6WBo4vc7LGsU0EzzEqQkJpMoKbohZplLpxxCODZfq/ u7KxjGCjENGGHp0bxE8yTSNFTnTaGIgTMeiQvNfNKiGvzcXhMZCTbnSakdMEPoVCchdS AASA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767800045; x=1768404845; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:sender:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=nEjVEszBS1bXBch+QTu9nax0OtrFw3AqtXa5XoSe9fA=; b=EO//Y6HGCjhOPpgYYzAwN3DZf4U/Ea+6uGRpAd68Q9SkTC7WNN3a4sWfWGK4yf1K5I 9XbEudwRi3tssRMbUCaD6PVQsiYb2CMxgC7PVLKeGLqOG1mev1IgHc/UnFtw6JPv0x0+ v90Gmy2smbo23uePBkfxYSvvxqvFIaf3cshJgn4zax8QNsAbshFzzrfBRsipe8b0OCme C2mn7j0G4I8yMq2eMGWmc2CFyyOPkEfDE8klEpdH8afb7Ku9kP/uvHSh6UMUSjgk4iu4 wxuruTJoJan+1FlMDdjEB457MKj6csjz3rLjPXXbJS6rWzWjy9dSUMQn7DLqI9lnxV6D iNpw== X-Forwarded-Encrypted: i=1; AJvYcCVC9uM41ywlVlUkOL4IaoooBVWvxzFRBl8PK9YMWwwC2N7ATC19wIjqWjYwAsafzfQ7mWgUlrBb/Pc=@vger.kernel.org X-Gm-Message-State: AOJu0YxI5LMOLCZGF/Ke8KNss3A/gGG9D5EgGdZwwc4HK8BhWIQ7iWZ/ A2F6XejIjJ46TQGE4wHWaXqJI8Zsmt998EXoTMPcnvBibm8fKANS1t23 X-Gm-Gg: AY/fxX7ULAZavzWo0ODyMoVVB26kwf97T4Iz1oebjd2ceAhdNw2yFgAUJBOhxDp1B1p WWX2aL+CuaROrYbTM+hBHZRKRCPrcEBEsRezJfoVWXSsJvVVlYeUUPrqfikap7HZm7igVTCKGvb 0xopkayeux+wneFardWKBM7M+7mJw8gxGQcNhjsqF8wlp5hrlpdr9VnwDDHkZWanEMR4K/tMK5/ nK3T54wbACCVn3yeewCdmEaDKiytHJu7QfBxUZbVmWIuoBV2hewTxZuzJvOtKWr2MF3wpJH4zca HEFoet3vFS+Ax9qKxiNUMy9RkUpJxP2K4PcBlVK5vefvdyiVWJsJLVpStrzlfz/NW49muzDezsh VxrNxMQbq8FzoxDV3V8Vm7iq+kjyHXrLcoyEtKNgUt5phuToqvfWR9NjN90xGCdkrfaCrtg37fD 3xtQE0uTb+Ku0XGbhOPzGq87oZUfloQpfq6TnwbnzjuC/10ptCYACRQQw= X-Google-Smtp-Source: AGHT+IFX5hj+WsCZcQN0F9ui7U4tLr7OXye3gCol3kbUSaMg5lrVm0TVcSYSe8f2gPxdB0ZE4wEzIg== X-Received: by 2002:a05:6808:c28c:b0:43f:2a62:8b79 with SMTP id 5614622812f47-45a6bd4ad18mr1041781b6e.29.1767800044921; Wed, 07 Jan 2026 07:34:04 -0800 (PST) Received: from localhost.localdomain ([2603:8080:1500:3d89:a917:5124:7300:7cef]) by smtp.gmail.com with ESMTPSA id 5614622812f47-45a5e2f1de5sm2398106b6e.22.2026.01.07.07.34.03 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 07 Jan 2026 07:34:04 -0800 (PST) Sender: John Groves From: John Groves X-Google-Original-From: John Groves To: John Groves , Miklos Szeredi , Dan Williams , Bernd Schubert , Alison Schofield Cc: John Groves , Jonathan Corbet , Vishal Verma , Dave Jiang , Matthew Wilcox , Jan Kara , Alexander Viro , David Hildenbrand , Christian Brauner , "Darrick J . Wong" , Randy Dunlap , Jeff Layton , Amir Goldstein , Jonathan Cameron , Stefan Hajnoczi , Joanne Koong , Josef Bacik , Bagas Sanjaya , Chen Linxuan , James Morse , Fuad Tabba , Sean Christopherson , Shivank Garg , Ackerley Tng , Gregory Price , Aravind Ramesh , Ajay Joshi , venkataravis@micron.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, nvdimm@lists.linux.dev, linux-cxl@vger.kernel.org, linux-fsdevel@vger.kernel.org, John Groves Subject: [PATCH V3 08/21] dax: export dax_dev_get() Date: Wed, 7 Jan 2026 09:33:17 -0600 Message-ID: <20260107153332.64727-9-john@groves.net> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260107153332.64727-1-john@groves.net> References: <20260107153244.64703-1-john@groves.net> <20260107153332.64727-1-john@groves.net> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit famfs needs to look up a dax_device by dev_t when resolving fmap entries that reference character dax devices. Signed-off-by: John Groves --- drivers/dax/super.c | 3 ++- include/linux/dax.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/dax/super.c b/drivers/dax/super.c index 68c45b918cff..c14b07be6a4e 100644 --- a/drivers/dax/super.c +++ b/drivers/dax/super.c @@ -511,7 +511,7 @@ static int dax_set(struct inode *inode, void *data) return 0; } -static struct dax_device *dax_dev_get(dev_t devt) +struct dax_device *dax_dev_get(dev_t devt) { struct dax_device *dax_dev; struct inode *inode; @@ -534,6 +534,7 @@ static struct dax_device *dax_dev_get(dev_t devt) return dax_dev; } +EXPORT_SYMBOL_GPL(dax_dev_get); struct dax_device *alloc_dax(void *private, const struct dax_operations *ops) { diff --git a/include/linux/dax.h b/include/linux/dax.h index 76f2a75f3144..2a04c3535806 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -56,6 +56,7 @@ struct dax_device *alloc_dax(void *private, const struct dax_operations *ops); int fs_dax_get(struct dax_device *dax_dev, void *holder, const struct dax_holder_operations *hops); struct dax_device *inode_dax(struct inode *inode); #endif +struct dax_device *dax_dev_get(dev_t devt); void *dax_holder(struct dax_device *dax_dev); void put_dax(struct dax_device *dax_dev); void kill_dax(struct dax_device *dax_dev); -- 2.49.0