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 BAC7F762C1; Wed, 21 Feb 2024 13:28:17 +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=1708522097; cv=none; b=Ur8Y7rxcOr2sNe/Oeqqjhz1O8T99tRrK5jb5zUBolA4hq63vcUiMsJfFwB5K7RrRoHJsccVafNnEpsDSUKL2ve0fkb1U6VtoP65T40NmvSmO+qr+ef0CZFLwcRvFas8WDnjIOYM6P0mBoUmypV71m7qG0EVEH2pTlIJBcGpGCTU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708522097; c=relaxed/simple; bh=ifzO++2H7GHcOZaXFf3sHiryqyxOHBE7Z785tP+VS4I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SP7DEYDUOVWsCfkavu3V72QdfvBFWb2TNklqtAldCvqb1ld8maYPttbY0YaRRxvVEFYBOYE/NGQ3Xum96I3WseM3YO6j9R2AYwTibQVsD8JjghdIE0QGE2ov+Ttur8eTVi4gac/RTi3v/bSqrDHWcYVPFxQE0JCeACwuhcPrEgI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=H246hgXN; 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="H246hgXN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2A81FC433F1; Wed, 21 Feb 2024 13:28:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1708522097; bh=ifzO++2H7GHcOZaXFf3sHiryqyxOHBE7Z785tP+VS4I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=H246hgXNk5yocJ54/l2JcJiAuWm0xEv8ewaW1Ed4YtSZ73C5Ck+hrIIS2D741NLmc 1zizf+xxBTIBKXys7594NDvX94AnqFI1M9sTfuCF9nNBlacAHYjJbPHwsabeJXvz/N KEoAsmgZxNpOsNmTz32UYJs2l2Jk2Qj0nRyYmDNw= 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 5.15 079/476] btrfs: dont warn if discard range is not aligned to sector Date: Wed, 21 Feb 2024 14:02:10 +0100 Message-ID: <20240221130010.894539382@linuxfoundation.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240221130007.738356493@linuxfoundation.org> References: <20240221130007.738356493@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 5.15-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 @@ -1206,7 +1206,8 @@ 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;