From patchwork Sun Mar 24 23:18:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 13600994 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.18]) (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 F26822365B2; Sun, 24 Mar 2024 23:18:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.18 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711322305; cv=none; b=gpRq0VqV5qcUa6CCFOlQ8m/W4XIo+mzOw+RQauSbE+gAg8VxPYP+THojz7L61nLSIBfiFbG7cnSMAkfqK5AHPCoUbNcGO/vZcfq3d6nwZ3BSHV74+x58LtSKzX5ep3igPL67HNLZOGOfAJn5X8JKxKxaoia76eZjXjgYYv1nOIc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711322305; c=relaxed/simple; bh=jVPxGR5BgM9vA0s1brpDXZj2La8xlSIyBw8kpmZZV6w=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=reiAtqHXICb9XUL9tvIOLpZ8MEruM0oR/o+nmMmMDZv4qkdhpYyiJwrFQgqas7wq3jZtFeyDcg2hmKbMhT0NJTZ3I2COqcEZaRWsye3lkFnjnvFQK11o6VJROpwUwUpH14fUaW1gho4Fjf2foHyuo5dCOgkeIG5bBT9Q2J9z7Xc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=MfPqms57; arc=none smtp.client-ip=198.175.65.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="MfPqms57" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1711322304; x=1742858304; h=from:date:subject:mime-version:content-transfer-encoding: message-id:references:in-reply-to:to:cc; bh=jVPxGR5BgM9vA0s1brpDXZj2La8xlSIyBw8kpmZZV6w=; b=MfPqms57nDAHyOU65vEHcPUe3gnrGc8xmcSUPBLWtp2V2Rrhu8BaN9gr 2THhUKHilOo7JfNAa7A8upBU8fPrgewYYe1ou7WE3BEca6zPruznM0oMb 86WNDZiseQxtt3P7eXTEQzU/hz/dENdQeC2RFu/JsQL39OKIDo3vl8imU paWUQfbPGHDlRsuzuQuhkTswt0X6sEkTv5N5pOdvVAQ+Zo35R8oz9nvYi OgvebLsLSJRYH0AeZ1vYzFr6QUDzt1Ra3Xk0LVnCBEQN0/FkbSTT0RqGx KvEWzLwpq1lC9V40Zz1rwcXQAT+3YUrehmdcPybARkFTlXcXDYCbbeZbe Q==; X-IronPort-AV: E=McAfee;i="6600,9927,11023"; a="6431733" X-IronPort-AV: E=Sophos;i="6.07,152,1708416000"; d="scan'208";a="6431733" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Mar 2024 16:18:19 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,152,1708416000"; d="scan'208";a="15464701" Received: from iweiny-mobl.amr.corp.intel.com (HELO localhost) ([10.213.186.165]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Mar 2024 16:18:19 -0700 From: Ira Weiny Date: Sun, 24 Mar 2024 16:18:18 -0700 Subject: [PATCH 15/26] range: Add range_overlaps() Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240324-dcd-type2-upstream-v1-15-b7b00d623625@intel.com> References: <20240324-dcd-type2-upstream-v1-0-b7b00d623625@intel.com> In-Reply-To: <20240324-dcd-type2-upstream-v1-0-b7b00d623625@intel.com> To: Dave Jiang , Fan Ni , Jonathan Cameron , Navneet Singh Cc: Dan Williams , Davidlohr Bueso , Alison Schofield , Vishal Verma , Ira Weiny , linux-btrfs@vger.kernel.org, linux-cxl@vger.kernel.org, linux-kernel@vger.kernel.org, Chris Mason , Josef Bacik , David Sterba X-Mailer: b4 0.13-dev-2d940 X-Developer-Signature: v=1; a=ed25519-sha256; t=1711322284; l=3117; i=ira.weiny@intel.com; s=20221211; h=from:subject:message-id; bh=jVPxGR5BgM9vA0s1brpDXZj2La8xlSIyBw8kpmZZV6w=; b=53iCHLJ/xWLPJlIgzSANBdAyM7tqEPc2zNiSaLKJv/ddYCJwR6n/w4cTZhkxgLdxBdAy9OS1f AobHeXQ6eQTD+GzTSt916xd9MiMVrNMwMNBn+yOb85x9/HEwj20voeQ X-Developer-Key: i=ira.weiny@intel.com; a=ed25519; pk=noldbkG+Wp1qXRrrkfY1QJpDf7QsOEthbOT7vm0PqsE= Code to support CXL Dynamic Capacity devices will have extent ranges which need to be compared for intersection not a subset as is being checked in range_contains(). range_overlaps() is defined in btrfs with a different meaning from what is required in the standard range code. Dan Williams pointed this out in [1]. Adjust the btrfs call according to his suggestion there. Then add a generic range_overlaps(). Cc: Dan Williams Cc: Chris Mason Cc: Josef Bacik Cc: David Sterba Cc: linux-btrfs@vger.kernel.org Signed-off-by: Ira Weiny [1] https://lore.kernel.org/all/65949f79ef908_8dc68294f2@dwillia2-xfh.jf.intel.com.notmuch/ Acked-by: David Sterba Reviewed-by: Davidlohr Bueso Reviewed-by: Johannes Thumshirn Reviewed-by: Fan Ni Reviewed-by: Dave Jiang Reviewed-by: Jonathan Cameron --- fs/btrfs/ordered-data.c | 10 +++++----- include/linux/range.h | 7 +++++++ 2 files changed, 12 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index 59850dc17b22..032d30a49edc 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -111,8 +111,8 @@ static struct rb_node *__tree_search(struct rb_root *root, u64 file_offset, return NULL; } -static int range_overlaps(struct btrfs_ordered_extent *entry, u64 file_offset, - u64 len) +static int btrfs_range_overlaps(struct btrfs_ordered_extent *entry, u64 file_offset, + u64 len) { if (file_offset + len <= entry->file_offset || entry->file_offset + entry->num_bytes <= file_offset) @@ -914,7 +914,7 @@ struct btrfs_ordered_extent *btrfs_lookup_ordered_range( while (1) { entry = rb_entry(node, struct btrfs_ordered_extent, rb_node); - if (range_overlaps(entry, file_offset, len)) + if (btrfs_range_overlaps(entry, file_offset, len)) break; if (entry->file_offset >= file_offset + len) { @@ -1043,12 +1043,12 @@ struct btrfs_ordered_extent *btrfs_lookup_first_ordered_range( } if (prev) { entry = rb_entry(prev, struct btrfs_ordered_extent, rb_node); - if (range_overlaps(entry, file_offset, len)) + if (btrfs_range_overlaps(entry, file_offset, len)) goto out; } if (next) { entry = rb_entry(next, struct btrfs_ordered_extent, rb_node); - if (range_overlaps(entry, file_offset, len)) + if (btrfs_range_overlaps(entry, file_offset, len)) goto out; } /* No ordered extent in the range */ diff --git a/include/linux/range.h b/include/linux/range.h index 6ad0b73cb7ad..9a46f3212965 100644 --- a/include/linux/range.h +++ b/include/linux/range.h @@ -13,11 +13,18 @@ static inline u64 range_len(const struct range *range) return range->end - range->start + 1; } +/* True if r1 completely contains r2 */ static inline bool range_contains(struct range *r1, struct range *r2) { return r1->start <= r2->start && r1->end >= r2->end; } +/* True if any part of r1 overlaps r2 */ +static inline bool range_overlaps(struct range *r1, struct range *r2) +{ + return r1->start <= r2->end && r1->end >= r2->start; +} + int add_range(struct range *range, int az, int nr_range, u64 start, u64 end);