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 2E9FD1F3B89 for ; Thu, 7 Aug 2025 05:59:03 +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=1754546344; cv=none; b=sED6hnnDx7eYM2IsLeRfKcpiI60J2ZE0HmTTw3qbtECWI/nZ395cF88N0bH4NB50GNENZ9bvwkEvIFrAB1XGb3Eu2h5dLSzIBqO0e2ABJqV3Fedp53/A/sKJ+H/WJBvPMTX9y5XEJiEt2Oh4Kydj4lpSwAyUVPlYGG/aJvp7Srs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754546344; c=relaxed/simple; bh=/WxfQG5NXWdjSiVyOzGU2IrbZI7H8lx6vh0Mys9VRBQ=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=P8NdSeVB2tMEjnzSwnIdvoCrj4OwJSr2F0lGqHQV6qBsrMUkolPR3pkH2Msk0nqbEjg1og6KpbHvJmW9HWkIwvfG8Sb2lnHfkUvSXDsy2/GmK7F5Pa1nAUuUhcAwr7B0/gGAsnSkVg5rKrRkkExiJ3AtfpWOHuULZshsRQ/bslQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PK5mb4RV; 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="PK5mb4RV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 492F3C4CEEB; Thu, 7 Aug 2025 05:59:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1754546343; bh=/WxfQG5NXWdjSiVyOzGU2IrbZI7H8lx6vh0Mys9VRBQ=; h=From:To:Cc:Subject:Date:From; b=PK5mb4RVxQKXfYo7OPEQVlbBxFIkXDJvrAGuVmP3CPJz40N10oWf5TiZXv4sLO9Yi vFhcNarNQ1/l174tSmchWmHBa4McdQXkJVBqi6TcEUiAEA8t7yuGFpqA8uh3MIU+QL iASvt9J4eBBhBVb1myrrNeE+xPXsJFMp/rIbuoXCAe7+Gau/0vqzJKBBh7743e2/E+ AHavcQuIW/3jyAAevKo74FGfxHNo651TeApVawHvUrNc4q6WQyDWbuZI8s/iysJcfT N26V1E19qRhUUzE149hWwfkGNjI1BOyt4/xcWaGyZN1cw2a0IbllAPstx+TiO0woHc 8S/cEgzC0iGnw== From: Damien Le Moal To: Carlos Maiolino , linux-xfs@vger.kernel.org Cc: Christoph Hellwig Subject: [PATCH] xfs: Improve CONFIG_XFS_RT Kconfig help Date: Thu, 7 Aug 2025 14:56:30 +0900 Message-ID: <20250807055630.841381-1-dlemoal@kernel.org> X-Mailer: git-send-email 2.50.1 Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Improve the description of the XFS_RT configuration option to document that this option is required for zoned block devices. Signed-off-by: Damien Le Moal --- fs/xfs/Kconfig | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/fs/xfs/Kconfig b/fs/xfs/Kconfig index ae0ca6858496..68724dec3d19 100644 --- a/fs/xfs/Kconfig +++ b/fs/xfs/Kconfig @@ -118,6 +118,15 @@ config XFS_RT See the xfs man page in section 5 for additional information. + This option is mandatory to support zoned block devices. For these + devices, the realtime subvolume must be backed by a zoned block + device and a regular block device used as the main device (for + metadata). If the zoned block device is a host-managed SMR hard-disk + containing conventional zones at the beginning of its address space, + XFS will use the disk conventional zones as the main device and the + remaining sequential write required zones as the backing storage for + the realtime subvolume. + If unsure, say N. config XFS_DRAIN_INTENTS -- 2.50.1