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 8153A3148C2; Thu, 16 Jul 2026 14:07:53 +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=1784210874; cv=none; b=eX0XjNF2gP4rd+7f8sdtj2pmoVMfJk+fahrt3LBj6bPB8+wx6YNOBLMsczKOJEX2dochCIsCFYM1n0koJ/Vps5hwfOGMr09yJz5TkUm+f8S+aQDHHUjF0TMQTlMiMz03CS3XgtkicE2daE10SSbcvHhtUTUvNN03XmmCsrCa9Zk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784210874; c=relaxed/simple; bh=xXDm9dDQa1OXP1f+j1JIfnzjcIdhHMotlHYRMmOWt+Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=J+CNfeWd02MeDJ18NJhCI1rUTeVWRue8ICogNdkXqMLAqMNuM06BRSWK8k7T9lDldxdvYOtRVEoqa7kZBDS243MbvQkcT7bxkki62+DxH6GvRZBFLOhCxuvuVMsrFXw68MW90eVRj9mIN2BfpVmU953ZIUbB6EvFaiecVW8Rs1w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=H+R0mdQ+; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="H+R0mdQ+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A5DB81F000E9; Thu, 16 Jul 2026 14:07:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784210873; bh=aLjFKUBNcDl31ZXhLoxDTIHV3Me6xpkyJV5MPd7tbv4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=H+R0mdQ+VSM+nbJaXlyVttXKz2q0/Juiv7AYHzTPwN0eD/vlu42d417GYcsY6RBnx K77WowKZN1AFSwkC8JcnWkKoZXYi8vDNCrt5jSUTeX5AiG3L96WDvumz+JbU5OKZ+h 8a0NRc/111EGXaQ1WoUjYZ698Vf3m+Bmuh5jLRkY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Konstantin Komarov , Sasha Levin Subject: [PATCH 6.18 212/480] fs/ntfs3: zero-fill folios beyond i_valid in ntfs_read_folio() Date: Thu, 16 Jul 2026 15:29:19 +0200 Message-ID: <20260716133049.319201781@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260716133044.672218725@linuxfoundation.org> References: <20260716133044.672218725@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Konstantin Komarov [ Upstream commit 356fa248168be90109b66f32a61b8eaedc98424a ] Handle ntfs_read_folio() early when the folio offset is beyond i_valid by zero-filling the folio and marking it uptodate. This avoids needless I/O and locking, improves read performance. Signed-off-by: Konstantin Komarov Stable-dep-of: d7ea8495fd30 ("fs/ntfs3: fix missing run load for vcn0 in attr_data_get_block_locked()") Signed-off-by: Sasha Levin --- fs/ntfs3/inode.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c index 0cf2898334f33b..1b7bb924fc0025 100644 --- a/fs/ntfs3/inode.c +++ b/fs/ntfs3/inode.c @@ -723,6 +723,19 @@ static int ntfs_read_folio(struct file *file, struct folio *folio) struct address_space *mapping = folio->mapping; struct inode *inode = mapping->host; struct ntfs_inode *ni = ntfs_i(inode); + loff_t vbo = folio_pos(folio); + + if (unlikely(is_bad_ni(ni))) { + folio_unlock(folio); + return -EIO; + } + + if (ni->i_valid <= vbo) { + folio_zero_range(folio, 0, folio_size(folio)); + folio_mark_uptodate(folio); + folio_unlock(folio); + return 0; + } if (is_resident(ni)) { ni_lock(ni); -- 2.53.0