From nobody Sun Oct 5 10:44:48 2025 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 F3FBE175A5 for ; Tue, 5 Aug 2025 06:18:05 +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=1754374686; cv=none; b=IlJklZndQz260bI2sveaS/C60bbw+WWhNWKCqfeDpG8riKu+Et3RF/bt6xXW5Yzq0ohoO+yWh/3KNp52vsRnNNjuY9ZAAby9w/hPsjeW50++LLItauXbnz+vzdG3EuxtJSpEADPrKOK3o1NTqEVf/F9NxKqwX05sW/PftBgCjMM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754374686; c=relaxed/simple; bh=DgJ6jHIbxLVmiXFgEe6KR9nH8EMJtdShONp10yEpRuw=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=PKZXa1ji9+L3miHnLjxkH1r2GdEEm69R9sidIvP8rUMt3jRiszdeJCszc75Vt8QlrbgmdwpVobjrzbuSv0or3AM16YwNn4DQapMljs+eXdUE30E+0sKtIC+qR8MDvchmM0INWvRo/iiodw11edf4cFa86b0mcxxbsK4cch5kP04= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=iugcPsXV; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="iugcPsXV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7736AC4CEF4; Tue, 5 Aug 2025 06:18:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1754374685; bh=DgJ6jHIbxLVmiXFgEe6KR9nH8EMJtdShONp10yEpRuw=; h=From:To:Cc:Subject:Date:From; b=iugcPsXVN40dyxh6qeY63pueNSJoFp1Su4a2x7lykPOQTZi4OBwcuBDSbV0+Asknt 8IqffZzhfSURGRH4khM4ql+HmEZcF6d1ZqCWlGs6RitXFfv3quZs1EathBSNBNUjdJ 6vvIF67bLG6qWDwFZtq61o7VDk6vuoxHeRv8eM0wI8omFXmuUe9nK2jCjx3Fq5tZ0E eF3HmIrVWGwbi8kz4hxJyvGSYVkXfp2FlNFxCj/GyW5uT8kc43sSpQa9bIKnemohvF 43kxj1Q2FDw5uewualYomPHrsx7/EZCHOwK1tQF5PTHGtt8XwJ39OZ7CcFs6Im5E3s ESW/yTXLa8rgg== From: Chao Yu To: jaegeuk@kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, Chao Yu , Jens Axboe , Qi Han Subject: [PATCH] f2fs: fix to return -EOPNOTSUPP for uncached write Date: Tue, 5 Aug 2025 14:17:33 +0800 Message-ID: <20250805061733.3067254-1-chao@kernel.org> X-Mailer: git-send-email 2.50.1.565.gc32cd1483b-goog Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" f2fs doesn't support uncached write yet, for write() w/ IOCB_DONTCACHE flag, let's return -EOPNOTSUPP instead of ignoring IOCB_DONTCACHE flag and write w/o uncached IO. Cc: Jens Axboe Cc: Qi Han Signed-off-by: Chao Yu --- v2: - fix author info fs/f2fs/file.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 9b8d24097b7a..7f09cad6b6d7 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -5185,6 +5185,11 @@ static ssize_t f2fs_file_write_iter(struct kiocb *io= cb, struct iov_iter *from) goto out; } =20 + if (iocb->ki_flags & IOCB_DONTCACHE) { + ret =3D -EOPNOTSUPP; + goto out; + } + if (!f2fs_is_compress_backend_ready(inode)) { ret =3D -EOPNOTSUPP; goto out; --=20 2.49.0