From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 21A833EA71; Wed, 21 Feb 2024 13:12:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708521161; cv=none; b=nCUoFlck8X5PJ5jaXMW6Sok/tl975FTOvetI6DiPimpV2pHRGtAW42j0dKltzgzzcSlqsM3hnK22+coOvWWoRCk4Ms8fred+En4PU5Yw535o9ZG4WwsgnfeW/4vgzO45uS3TVY1wWCACDbkiFiMLmURbvDIbLOFT7fwtMZR164k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708521161; c=relaxed/simple; bh=9xgF1jwVIz+LKKLuxQOtL3galtLgrxyao6aIPIOMZmg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SLXwh8vJ6QO6NfCI9/W8pe6aAvYIxvQ+eTAwyYSyny/7lry384p3xV/w1a+G2EI5SFZVsL+RrDOjKnyrnLtbseBYH87U72X1VrX8f5AjBSbmhkWn1mw9dYUEaTY40AOXwp5Qk2uN4DCP2C9oX5qLNibJnaeZghS2oO5q+1FslOY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=cm+Ms9Or; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="cm+Ms9Or" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 354E7C433C7; Wed, 21 Feb 2024 13:12:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1708521160; bh=9xgF1jwVIz+LKKLuxQOtL3galtLgrxyao6aIPIOMZmg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cm+Ms9OrRfXoleyLRkgWwo9Mb8nMbh5w4fyZkOgt101iHM0dPKEpFqckeKcyO2KzO 4B/olt2UmtmFQovI3c1JwRdtrx62RC/vbBBHD4csf7CmU83zW8yq4cayAqp7bovHBE 8kOkU2TnZUK/cD/xKefoyUKeya9Xs74EtunnzAMo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, syzbot+4a4f1eba14eb5c3417d1@syzkaller.appspotmail.com, Johannes Thumshirn , Anand Jain , David Sterba Subject: [PATCH 4.19 037/202] btrfs: dont warn if discard range is not aligned to sector Date: Wed, 21 Feb 2024 14:05:38 +0100 Message-ID: <20240221125932.994768544@linuxfoundation.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240221125931.742034354@linuxfoundation.org> References: <20240221125931.742034354@linuxfoundation.org> User-Agent: quilt/0.67 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 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Sterba commit a208b3f132b48e1f94f620024e66fea635925877 upstream. There's a warning in btrfs_issue_discard() when the range is not aligned to 512 bytes, originally added in 4d89d377bbb0 ("btrfs: btrfs_issue_discard ensure offset/length are aligned to sector boundaries"). We can't do sub-sector writes anyway so the adjustment is the only thing that we can do and the warning is unnecessary. CC: stable@vger.kernel.org # 4.19+ Reported-by: syzbot+4a4f1eba14eb5c3417d1@syzkaller.appspotmail.com Reviewed-by: Johannes Thumshirn Reviewed-by: Anand Jain Signed-off-by: David Sterba Signed-off-by: Greg Kroah-Hartman --- fs/btrfs/extent-tree.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -1899,7 +1899,8 @@ static int btrfs_issue_discard(struct bl u64 bytes_left, end; u64 aligned_start = ALIGN(start, 1 << 9); - if (WARN_ON(start != aligned_start)) { + /* Adjust the range to be aligned to 512B sectors if necessary. */ + if (start != aligned_start) { len -= aligned_start - start; len = round_down(len, 1 << 9); start = aligned_start;