From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from 011.lax.mailroute.net (011.lax.mailroute.net [199.89.1.14]) (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 0BF3B3FBED4; Fri, 24 Apr 2026 22:42:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=199.89.1.14 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777070571; cv=none; b=Vh+RHhA8MfWqBpu90cKG/4Nzhui1mOyvzuedN53ieGIR7YWJLwCtLHz3xRtP+Z8KgMbQBKugMBfqixBGbY8f8KuZzTeNF+IRjM6F/US+2rvz2jI8vhHB2WHHdK5g55eAtfDUZIt/ugUbSKtFzoWmIMEhvM+1bf92fcYIh1TF2/Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777070571; c=relaxed/simple; bh=VmHREFg0sP5iGKWhsxQ0gnkojEOXLrvU96kmREemGyM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=biPt9ZdNOyj/h5zCaxpYXfSTSK1q0ZYx42Vvoin8gFPtEHWyPFW/j7MI2lTW4LE1TIlAJnxwss0CAxQeZJ41pZR9NDkd1pXpdj5qWndd6EtOLkdM1xgahXAf9I1/QPOlehF/1BklMTPEybelB8BDxWTjfcZTN9OccxfSju+Dl6A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=acm.org; spf=pass smtp.mailfrom=acm.org; dkim=pass (2048-bit key) header.d=acm.org header.i=@acm.org header.b=mJJt0tAd; arc=none smtp.client-ip=199.89.1.14 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=acm.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=acm.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=acm.org header.i=@acm.org header.b="mJJt0tAd" Received: from localhost (localhost [127.0.0.1]) by 011.lax.mailroute.net (Postfix) with ESMTP id 4g2Sdt2sj6z1XLHYm; Fri, 24 Apr 2026 22:42:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=acm.org; h= content-transfer-encoding:mime-version:references:in-reply-to :x-mailer:message-id:date:date:subject:subject:from:from :received:received; s=mr01; t=1777070558; x=1779662559; bh=hn5gt /kr7QDgHfqk6BJtfvqJ62o4kkrmwOKTA2D2kLY=; b=mJJt0tAd9F+e7XezCKlu+ cMif01CMnok1UpTVdunNApamb3sxfj5lSTzixS/6imv6K6BFtWSWD6L3OVydV10h Y/QJy6zIp0IrelzGTzpXolfFjgUKEzXMzEDPUc77tlirppNFgYcP2gjGUufP5XJ9 CcUfmNrZ14Dmh3N7kBdVenvCJOmCHvTlbTL9hW/67TBWNYNbpCfc5ImgOgVJg+tm +4wcm/I5aYg0N+JkbjByHd5CqEY12WTCYbkCdvvGApLYBBKvPHtiIvDRzEtVGXjK 6bt8RMxSpNaEhZiKJcL38rYWDqcx0kTAjg7OSi1kcx3XxckhOiteClSqViXO3tlZ Q== X-Virus-Scanned: by MailRoute Received: from 011.lax.mailroute.net ([127.0.0.1]) by localhost (011.lax [127.0.0.1]) (mroute_mailscanner, port 10029) with LMTP id x6VTYr4bWKdD; Fri, 24 Apr 2026 22:42:38 +0000 (UTC) Received: from bvanassche.mtv.corp.google.com (unknown [104.135.180.219]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: bvanassche@acm.org) by 011.lax.mailroute.net (Postfix) with ESMTPSA id 4g2Sdm63KVz1XLF2r; Fri, 24 Apr 2026 22:42:36 +0000 (UTC) From: Bart Van Assche To: Jens Axboe Cc: linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, linux-nvme@lists.infradead.org, Christoph Hellwig , Nitesh Shetty , Bart Van Assche Subject: [PATCH 11/12] dm-linear: Enable copy offloading Date: Fri, 24 Apr 2026 15:42:00 -0700 Message-ID: <20260424224201.1949243-12-bvanassche@acm.org> X-Mailer: git-send-email 2.54.0.rc2.544.gc7ae2d5bb8-goog In-Reply-To: <20260424224201.1949243-1-bvanassche@acm.org> References: <20260424224201.1949243-1-bvanassche@acm.org> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Set BLK_FEAT_STACKING_COPY_OFFL and max_copy_hw_sectors to enable copy offloading. Signed-off-by: Bart Van Assche --- drivers/md/dm-linear.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c index 38c17846deb0..3de8bf5f11fb 100644 --- a/drivers/md/dm-linear.c +++ b/drivers/md/dm-linear.c @@ -119,6 +119,11 @@ static void linear_status(struct dm_target *ti, stat= us_type_t type, } } =20 +static void linear_io_hints(struct dm_target *ti, struct queue_limits *l= imits) +{ + limits->features |=3D BLK_FEAT_STACKING_COPY_OFFL; +} + static int linear_prepare_ioctl(struct dm_target *ti, struct block_devic= e **bdev, unsigned int cmd, unsigned long arg, bool *forward) @@ -211,6 +216,7 @@ static struct target_type linear_target =3D { .dtr =3D linear_dtr, .map =3D linear_map, .status =3D linear_status, + .io_hints =3D linear_io_hints, .prepare_ioctl =3D linear_prepare_ioctl, .iterate_devices =3D linear_iterate_devices, .direct_access =3D linear_dax_direct_access,