From patchwork Mon Feb 22 21:19:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Goffredo Baroncelli X-Patchwork-Id: 12099515 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3A136C433DB for ; Mon, 22 Feb 2021 21:20:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EF69B64E27 for ; Mon, 22 Feb 2021 21:20:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231410AbhBVVUF (ORCPT ); Mon, 22 Feb 2021 16:20:05 -0500 Received: from smtp-34.italiaonline.it ([213.209.10.34]:55235 "EHLO libero.it" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S229863AbhBVVUE (ORCPT ); Mon, 22 Feb 2021 16:20:04 -0500 Received: from venice.bhome ([78.12.28.43]) by smtp-34.iol.local with ESMTPA id EIbml5cmb5WrZEIbwlGloV; Mon, 22 Feb 2021 22:19:20 +0100 x-libjamoibt: 1601 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=libero.it; s=s2021; t=1614028760; bh=fyrWQZCKp/t/gLoLBueHmvtjHJXmf/qMqBvk4tlI1lY=; h=From; b=ZkJR/kVK8ODHE49nW5NgnarOuYYTt6kPoO1GB0oBlDKahCPoHaP/NMgkLcGw9Aw1P irygyHkEmaXHo0A7z6WAybnD9oxZ7GrZvWe4sh9mDCieSigHzC0j33oHrnHt5Apzpg Too6J+tkGS08yz4ExMnZuUWYCrL+mfgnq+kXhJPUK7yDBcM7E5ux17yr+6mldfbizb S0sZkjW5JKjskktjXur4X1gMN/bJQPT0HUUXyZSc0tO/HLtk/3NqMgz5n5SWcJQ8bB qQuc2WMLyHXqchEtUravQNe/uSvTj+MdFx8WN2v/OtEapql3jNuq1rInjhiPY8LDCi MsSXSNHrJLHsA== X-CNFS-Analysis: v=2.4 cv=W4/96Tak c=1 sm=1 tr=0 ts=60341fd8 cx=a_exe a=Q5/16X4GlyvtzKxRBiE+Uw==:117 a=Q5/16X4GlyvtzKxRBiE+Uw==:17 a=lLZ8wYX2qvZDYXWRsIgA:9 From: Goffredo Baroncelli To: linux-btrfs@vger.kernel.org Cc: Goffredo Baroncelli , Goffredo Baroncelli Subject: [PATCH 2/4] btrfs: add flags to give an hint to the chunk allocator Date: Mon, 22 Feb 2021 22:19:07 +0100 Message-Id: X-Mailer: git-send-email 2.30.0 In-Reply-To: References: MIME-Version: 1.0 X-CMAE-Envelope: MS4xfCal3Sg7EakDGjxUtmmyvugb4nbwuNm54g/5a4Vt9sSbXly5L+cLCw97fO2acXZ4iHdEn+wPavqxIliwAmfOQweVtSUB1iExoEJv6Usn/OsZ+CqJDUk/ 6l3iUUlYu2sP1EiZUitiRGwdHjfdfq5ZICAtLv/dzF6U2gcPYr8xLEHxQ5v2+94zIQYIfUe0Jyn+3gQFkTx+xi4/TCv3XfWocfjrV6M3W3PCtZXhBUeBdTdH 8nX/TQDcHUaZFEbc54rBjw== Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org From: Goffredo Baroncelli Add the following flags to give an hint about which chunk should be allocated in which a disk. The following flags are created: - BTRFS_DEV_ALLOCATION_PREFERRED_DATA preferred data chunk, but metadata chunk allowed - BTRFS_DEV_ALLOCATION_PREFERRED_METADATA preferred metadata chunk, but data chunk allowed - BTRFS_DEV_ALLOCATION_METADATA_ONLY only metadata chunk allowed - BTRFS_DEV_ALLOCATION_DATA_ONLY only data chunk allowed Signed-off-by: Goffredo Baroncelli --- include/uapi/linux/btrfs_tree.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/uapi/linux/btrfs_tree.h b/include/uapi/linux/btrfs_tree.h index 58d7cff9afb1..25f522bcdadc 100644 --- a/include/uapi/linux/btrfs_tree.h +++ b/include/uapi/linux/btrfs_tree.h @@ -361,6 +361,20 @@ struct btrfs_key { __u64 offset; } __attribute__ ((__packed__)); +/* dev_item.type */ + +/* btrfs chunk allocation hints */ +#define BTRFS_DEV_ALLOCATION_MASK_BIT_COUNT 3 +/* preferred data chunk, but metadata chunk allowed */ +#define BTRFS_DEV_ALLOCATION_PREFERRED_DATA (0ULL) +/* preferred metadata chunk, but data chunk allowed */ +#define BTRFS_DEV_ALLOCATION_PREFERRED_METADATA (1ULL) +/* only metadata chunk are allowed */ +#define BTRFS_DEV_ALLOCATION_METADATA_ONLY (2ULL) +/* only data chunk allowed */ +#define BTRFS_DEV_ALLOCATION_DATA_ONLY (3ULL) +/* 5..7 are unused values */ + struct btrfs_dev_item { /* the internal btrfs device id */ __le64 devid;