From nobody Sun Oct 5 14:37:46 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 BBB0C372 for ; Sat, 2 Aug 2025 02:37:41 +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=1754102261; cv=none; b=ZO9+BDT4B2fZxtXAAntuh7hIVkTR6mjlshOSnwuKZx6RXB9zCIOP6HRCu4T0vYvFwH1ZH2jLPT983tdANZTOUTKkhch0vhJqL2sDV1RpiioXekKZr9xA6tcQz8S1rIPBZ4d9zBytytjjaYQTTdij1LG3swNx6ynyj+N3VzzirIU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754102261; c=relaxed/simple; bh=SnMGNBU0WevBcEDt0U0KrwRwiB+AubWXiRuNhkpiDR0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=K6HV5AB3QReUW62QYZzIIfqNvWYoQ5hB/RqJZOyqlY+pjxqdQB9xq8DIwnQd2S69j5fzwOvSG3Zb74w1837t/3R9g+TprcKNyEPBjpdHtnrNSX8slpg4FLYObQC411qXL6+oC99h6B/J4hh2wWbdAEr057H7HbZHnGMSxs9koLI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mXmhydbW; 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="mXmhydbW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E105AC4CEE7; Sat, 2 Aug 2025 02:37:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1754102261; bh=SnMGNBU0WevBcEDt0U0KrwRwiB+AubWXiRuNhkpiDR0=; h=From:To:Cc:Subject:Date:From; b=mXmhydbWdO5IiuKtmOjWtXxTEy6KJEAmvlSmKZ+6Pa7u1WtZT7IQ2cKpwK2k21484 TZcTDbt8MzqhrRdexg9BNy6RinGzGdfcBOykVVLm19dfm1HqIIsOIceFHUHis9KQFu 2+pO66zmKttEODPoSosqRFD6WLYovB8yoeizU5ABg08/OaJmVVr6KZRca2SnB2tltZ TTLTj86P+p7wKc9PhOsNGjaZWaRIQlvQshADiltr40iIuyA4z7+dMpwUGDBLi0Oxl1 4nCqbgRNPOuHRWzt74vbKHWV1L/un0/bye/8p1kfioNky5+vDil334fPiCM7P3z4rv WWxa4id4mh1pg== From: Chao Yu To: jaegeuk@kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, Qi Han , Jens Axboe , Chao Yu Subject: [PATCH] f2fs: fix to return -EOPNOTSUPP for uncached write Date: Sat, 2 Aug 2025 10:37:33 +0800 Message-ID: <20250802023733.1890349-1-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" From: Qi Han 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 --- 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