From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 960932BB1D; Sat, 23 May 2026 17:55:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779558918; cv=none; b=D5Yk0u2ixDcwBAQvavekfbdCFPwVAeeEVKRCgVVR46Nc539eMWY1fMdLF6PTf/Kcg8468KVzP1DOTabDtC5Mi5kQcyYmVGOH/EcX8G8KNJK3cLBmOY0tp5bhZ3AmWU7nV2l6MoJW2sKL102bw/lQHNcxtZOHudWesX8ceMuEQfE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779558918; c=relaxed/simple; bh=FrSccbbs0hyrfruPAQEdMfu5TavFD0FZc2PEdgCxv1o=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=itaqZc5Hm+YH5oPgEUxe3N0PNYg910DPWHS39iuupv/xz5vK6qCLh/RTLykTH4uMY8KcyVsSn9yh8Ho+REhIiyN74J6+8aRvkXipOqfo7+iJgEGDG+8FdZaPkU8Ol/dyhp0gudiVCQTj5iZyXd4yXs3COl39fos/lOdcK7+ft5Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ATnUMplv; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ATnUMplv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 587A61F00A3A; Sat, 23 May 2026 17:55:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779558917; bh=iuTtZ9uTCrL2gUy5rhFYUqVCvakrQG2oy3wSLfhPcVk=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=ATnUMplvANtFqXnPMMG7NSH8t5x5kTr2rh2BxFK2/mVjIEx0Csre+Yxnx89gvCEvB uHhDVFvMFOGe5KELFWAxCXbgCTVrBKUMFRuF0LRLv78XqrCqluzw3rTHXpk0yXii4K fDJU8jmq2k/g/NjGNa5JSW+CPvvN53gcwu2ld51g061LrLeCS7I3OlrWU8/r17dOxF bJ5qv7tKsbMQ1Om/1fVqqTAJpam8n6zNmdQ1U/w3peqvRTGFGpN7qetPQI+JDlr74U +IrL/dYO28YRNMgTFDRp3h8h0WxOISk9xbTS2rZ8iV2rThE32PwWKlR2cNbCHn6/tO lPASwzWfCy/xA== From: "Mike Rapoport (Microsoft)" Date: Sat, 23 May 2026 20:54:17 +0300 Subject: [PATCH 05/17] NFS: replace __get_free_page() with kmalloc() in nfs_show_devname() Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260523-b4-fs-v1-5-275e36a83f0e@kernel.org> References: <20260523-b4-fs-v1-0-275e36a83f0e@kernel.org> In-Reply-To: <20260523-b4-fs-v1-0-275e36a83f0e@kernel.org> To: Jan Kara , Mark Fasheh , Joel Becker , Joseph Qi , Ryusuke Konishi , Viacheslav Dubeyko , Trond Myklebust , Anna Schumaker , Chuck Lever , Jeff Layton , NeilBrown , Olga Kornievskaia , Dai Ngo , Tom Talpey , Alexander Viro , Christian Brauner , Jan Kara , Dave Kleikamp , Theodore Ts'o , Miklos Szeredi , Andreas Hindborg , Breno Leitao , Kees Cook , "Tigran A. Aivazian" Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, ocfs2-devel@lists.linux.dev, linux-nilfs@vger.kernel.org, linux-nfs@vger.kernel.org, jfs-discussion@lists.sourceforge.net, linux-ext4@vger.kernel.org, linux-mm@kvack.org, "Mike Rapoport (Microsoft)" X-Mailer: b4 0.15.2 nfs_show_devname() allocates a tmemporary buffer __get_free_page(). kmalloc() is a better API for such use and it also provides better scalability and more debugging possibilities. Replace use of __get_free_page() with kmalloc(). Signed-off-by: Mike Rapoport (Microsoft) --- fs/nfs/super.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 4cd420b14ce3..8f8a03a68d3d 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -623,7 +623,7 @@ static void show_implementation_id(struct seq_file *m, struct nfs_server *nfss) int nfs_show_devname(struct seq_file *m, struct dentry *root) { - char *page = (char *) __get_free_page(GFP_KERNEL); + char *page = kmalloc(PAGE_SIZE, GFP_KERNEL); char *devname, *dummy; int err = 0; if (!page) @@ -633,7 +633,7 @@ int nfs_show_devname(struct seq_file *m, struct dentry *root) err = PTR_ERR(devname); else seq_escape(m, devname, " \t\n\\"); - free_page((unsigned long)page); + kfree(page); return err; } EXPORT_SYMBOL_GPL(nfs_show_devname); -- 2.53.0