From patchwork Mon Feb 1 21:28:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Goffredo Baroncelli X-Patchwork-Id: 12060097 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 88541C43381 for ; Mon, 1 Feb 2021 21:29:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4A94764EC8 for ; Mon, 1 Feb 2021 21:29:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232432AbhBAV3O (ORCPT ); Mon, 1 Feb 2021 16:29:14 -0500 Received: from smtp-36.italiaonline.it ([213.209.10.36]:37045 "EHLO libero.it" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S232305AbhBAV3G (ORCPT ); Mon, 1 Feb 2021 16:29:06 -0500 Received: from venice.bhome ([84.220.24.72]) by smtp-36.iol.local with ESMTPA id 6gkAlJHqMi3tS6gkBlGswt; Mon, 01 Feb 2021 22:28:23 +0100 x-libjamoibt: 1601 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=libero.it; s=s2014; t=1612214903; bh=BPdX2M7pzcSlW67unwh3vWdpm9eFhj7jTNAL2JEydi0=; h=From; b=ot213zskJ5faXfMorwuh760KfifMN6Hnw9ZNtK9hPZratxQg5skzWEPipK3J2vLD1 kwSdvoRS0ZD5HNWm+Sr8nY8bPatTtT0Tc+Pi3QZjsWzndDGV6Uai1njLgDQJBUMgG5 FzRK9QQBtV79DXcPJNgDIupw8Yoo1Hw2bw3x94UVRe8i5arrf2wWI1t0Ac8p5DX7H+ gnCEr1013f/L4zx5SRFs9rS6ki1KMI5urSc/3obdlJ1JYIQcAFtKjqk4MULrnyxY7Q RM66ExI4Ely5teOdnCmhMHkYYF1g7Rgi3erbRwEm2h19SC1Sc0iSXRHvYGjMK2S3sz v/F2QnZsbMGDA== X-CNFS-Analysis: v=2.4 cv=FqfAQ0nq c=1 sm=1 tr=0 ts=60187277 cx=a_exe a=tAq5w2qrEf5dL+VNPEPBHQ==:117 a=tAq5w2qrEf5dL+VNPEPBHQ==:17 a=lLZ8wYX2qvZDYXWRsIgA:9 From: Goffredo Baroncelli To: linux-btrfs@vger.kernel.org Cc: Zygo Blaxell , Josef Bacik , Goffredo Baroncelli Subject: [PATCH 2/5] btrfs: add flags to give an hint to the chunk allocator Date: Mon, 1 Feb 2021 22:28:17 +0100 Message-Id: <20210201212820.64381-3-kreijack@libero.it> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210201212820.64381-1-kreijack@libero.it> References: <20210201212820.64381-1-kreijack@libero.it> MIME-Version: 1.0 X-CMAE-Envelope: MS4xfFYKrWBstadXte6rQg6x4TKquP1wXXhoyYYM2AI7cSRXuTIpKOEM6dMF0M35KslNX9CHRb27wdGuhAxg+LNzrGNazimiOamvgWENsGVQQxRnL7gBwVNZ mPd9T6PL6syZ26czSUmE+T0PdkmjK5PJtc1TQYNESgEmNTrtOfJ5wYOC2gSYK9chIu500oHYpQp58mLev5aFUl6udwR85k/UJtYCYVQPKp036VUnibjNYwiM ZV+3dgkoAa5mYtxIakOAOHFMX/SQivx+qxj05ZFbefe9Q6hSeOJXG2uFImzCZTzT 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 | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/include/uapi/linux/btrfs_tree.h b/include/uapi/linux/btrfs_tree.h index 58d7cff9afb1..bd3af853df0c 100644 --- a/include/uapi/linux/btrfs_tree.h +++ b/include/uapi/linux/btrfs_tree.h @@ -361,6 +361,24 @@ struct btrfs_key { __u64 offset; } __attribute__ ((__packed__)); +/* dev_item.type */ + +/* btrfs chunk allocation hints */ +#define BTRFS_DEV_ALLOCATION_MASK_BIT_COUNT 3 +#define BTRFS_DEV_ALLOCATION_MASK ((1ULL << \ + BTRFS_DEV_ALLOCATION_MASK_BIT_COUNT) -1) +#define BTRFS_DEV_ALLOCATION_MASK_COUNT (1ULL << \ + BTRFS_DEV_ALLOCATION_MASK_BIT_COUNT) +/* 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;