From nobody Wed Nov 27 23:43:38 2024 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.11]) (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 4D4D3194AF0; Mon, 7 Oct 2024 23:16:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.11 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728342987; cv=none; b=l3xfwIN6sCDN9gHQ6plN3bj9ICl5l8XBNpoSpvD59ULfyeolJCmDnMEFzlOQRnwzdAFLwMzfThXIIBlvE3gQt5wh/S3hYSWRB2pDkQBkCwTLsJ/lcKj12/W71dAMPLWok31kY+eJ5oK+n8qd9pc/qUbskA3eng9m/pP16kWZjzU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728342987; c=relaxed/simple; bh=07I2KD7+kzZQpza3GP7lcZeYEOxq4Zpa5vfjWi10te4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=EQPI1a/zNkiFSvhJJ+pY+0VNbpO+ckr2/BhNr0o7tUO4lT/2o6GVXSiV7ai8MHbqraI2BvHvCOAh3uEFJkR8KKg9Z1nmsfctRqeKNo53Jw0KI09lf/C15BnNnM80nQLjsgQP23pFXUmfClUp5/pPhnjeEjRJXhhunIp1yeEef78= 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=ldkYs+jU; arc=none smtp.client-ip=198.175.65.11 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="ldkYs+jU" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1728342987; x=1759878987; h=from:date:subject:mime-version:content-transfer-encoding: message-id:references:in-reply-to:to:cc; bh=07I2KD7+kzZQpza3GP7lcZeYEOxq4Zpa5vfjWi10te4=; b=ldkYs+jUtX/YRImcpec7z/N3E5yhO37XEE3jxanwF5Q6dBv3ZTi2RI+f l+mk6VygcrBeYTfH3ZjThk+1LYFRn84UiPkRMaU1gS1/CTolBsD9oG72t 9bjx2mkrBZ1qu4Dkv91r2gRb59E8gjoSU8XS7XBTzq8mwTIqYr8FuosQk s8OuEiXrxuQ+o3gEt23Pyn6cM6+wikDoH1O421gjAktuhQokAwIgkFRnh gVxELk7PeZ1s5BRmzIWsj2PbXu+sgW7qQrFy2P65tE9qzWtPlOYBgJVIN I9fhE3fG4DMkwSZ4BlAIbCnrrAHIQHSQRefTlje1G4x93Lb5hzI4HdhC/ A==; X-CSE-ConnectionGUID: oYfxKezhQo2ZN8D2HCm4xg== X-CSE-MsgGUID: wI1puzozS0q0t1Jrpks2cA== X-IronPort-AV: E=McAfee;i="6700,10204,11218"; a="38078896" X-IronPort-AV: E=Sophos;i="6.11,185,1725346800"; d="scan'208";a="38078896" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by orvoesa103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Oct 2024 16:16:26 -0700 X-CSE-ConnectionGUID: YQ4dGJlOQv2wgdd2OGtsHA== X-CSE-MsgGUID: PhYByG35REKP6WUALPHotQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,185,1725346800"; d="scan'208";a="75634575" Received: from ldmartin-desk2.corp.intel.com (HELO localhost) ([10.125.110.112]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Oct 2024 16:16:23 -0700 From: Ira Weiny Date: Mon, 07 Oct 2024 18:16:10 -0500 Subject: [PATCH v4 04/28] range: Add range_overlaps() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241007-dcd-type2-upstream-v4-4-c261ee6eeded@intel.com> References: <20241007-dcd-type2-upstream-v4-0-c261ee6eeded@intel.com> In-Reply-To: <20241007-dcd-type2-upstream-v4-0-c261ee6eeded@intel.com> To: Dave Jiang , Fan Ni , Jonathan Cameron , Navneet Singh , Jonathan Corbet , Andrew Morton Cc: Dan Williams , Davidlohr Bueso , Alison Schofield , Vishal Verma , Ira Weiny , linux-btrfs@vger.kernel.org, linux-cxl@vger.kernel.org, linux-doc@vger.kernel.org, nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org, Chris Mason , Josef Bacik , David Sterba , Johannes Thumshirn X-Mailer: b4 0.15-dev-37811 X-Developer-Signature: v=1; a=ed25519-sha256; t=1728342968; l=3425; i=ira.weiny@intel.com; s=20221211; h=from:subject:message-id; bh=07I2KD7+kzZQpza3GP7lcZeYEOxq4Zpa5vfjWi10te4=; b=Gx+w5m+4Pi2Qt9xyC75hqePjeE7TVGvSP6kNXikpkuW4sazXEwKwoe1YMvyCGZD4658eEXSkj H4LIyLC0BvDCsRmjv4k4PJKh5n7mYKNkQqS4RLepdMD7TSHk6HnPOlX 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 Acked-by: David Sterba Reviewed-by: Davidlohr Bueso Reviewed-by: Johannes Thumshirn Reviewed-by: Fan Ni Reviewed-by: Dave Jiang Reviewed-by: Jonathan Cameron Signed-off-by: Ira Weiny [1] https://lore.kernel.org/all/65949f79ef908_8dc68294f2@dwillia2-xfh.jf.in= tel.com.notmuch/ --- 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 2104d60c2161..744c3375ee6a 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 *ro= ot, u64 file_offset, return NULL; } =20 -static int range_overlaps(struct btrfs_ordered_extent *entry, u64 file_off= set, - u64 len) +static int btrfs_range_overlaps(struct btrfs_ordered_extent *entry, u64 fi= le_offset, + u64 len) { if (file_offset + len <=3D entry->file_offset || entry->file_offset + entry->num_bytes <=3D file_offset) @@ -985,7 +985,7 @@ struct btrfs_ordered_extent *btrfs_lookup_ordered_range( =20 while (1) { entry =3D 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; =20 if (entry->file_offset >=3D file_offset + len) { @@ -1114,12 +1114,12 @@ struct btrfs_ordered_extent *btrfs_lookup_first_ord= ered_range( } if (prev) { entry =3D 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 =3D 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; } =20 +/* True if r1 completely contains r2 */ static inline bool range_contains(struct range *r1, struct range *r2) { return r1->start <=3D r2->start && r1->end >=3D r2->end; } =20 +/* True if any part of r1 overlaps r2 */ +static inline bool range_overlaps(struct range *r1, struct range *r2) +{ + return r1->start <=3D r2->end && r1->end >=3D r2->start; +} + int add_range(struct range *range, int az, int nr_range, u64 start, u64 end); =20 --=20 2.46.0