From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 A10B425522E for ; Tue, 25 Mar 2025 13:52:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742910749; cv=none; b=AAqW2fML5C9WmHCOsvmD0nyWjDw4J00B7PmRLiRKkZ7l7zh2VOuxy/SY9KCdiK8NXExEYcU6PAgBc4idmyEXW3loEI+zIHp1IGlAJwK5vT4cJAeQfiRDLzZGkp7v3nO74ZFIiHhPxo2gizGRixt8yOmdIfv2UeZQ5GhCdqBvFuY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742910749; c=relaxed/simple; bh=i2hYLhBC4x1d3VnoC0ecf3oNjvo1HQHgwaBb04veB8g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YS7K/vlJyn3eXT9s3c2ORLAswL0dcUJf7EmKjMFu4V0VsfG9YBVO1yWAyTq/2CDREHmvoOT8oQsN/bbAx6kdMcOJUp7txfIASZ2DhtyTL6pvuH4IlS16Xyq1QwIWvJsNSEfNztM265QmFCkH1aIuklsg6kmRs347oMNgDuXCAm8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=bJaro2dI; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="bJaro2dI" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1742910746; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=uWAOs5fsFruVcO2h9150cvagOZphYokop91XUuxe8bc=; b=bJaro2dIDlsX+pgBmJKc8TkQsgF05jjP7wMrQDKWroQCv5pzd6hPzY4xbDXXdi3Diz5X8q FfZQn1g2C1Tz+KHIjgKVi78+07S0pzFwXuj6Ycb/EtUXO5+Gmc6vOm4xxh5uTSJXGUXqX3 qg0smJ6PkqunhcAWHqqLeJ16tcMgLDo= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-398-HPQWnUEyN_O4_N3YbnGJsg-1; Tue, 25 Mar 2025 09:52:22 -0400 X-MC-Unique: HPQWnUEyN_O4_N3YbnGJsg-1 X-Mimecast-MFC-AGG-ID: HPQWnUEyN_O4_N3YbnGJsg_1742910741 Received: from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.93]) (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) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 9E1FE180899B; Tue, 25 Mar 2025 13:52:20 +0000 (UTC) Received: from localhost (unknown [10.72.120.3]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 525A4180A802; Tue, 25 Mar 2025 13:52:18 +0000 (UTC) From: Ming Lei To: Jens Axboe , io-uring@vger.kernel.org, Pavel Begunkov Cc: Caleb Sander Mateos , Ming Lei Subject: [PATCH 2/4] block: add for_each_mp_bvec() Date: Tue, 25 Mar 2025 21:51:51 +0800 Message-ID: <20250325135155.935398-3-ming.lei@redhat.com> In-Reply-To: <20250325135155.935398-1-ming.lei@redhat.com> References: <20250325135155.935398-1-ming.lei@redhat.com> Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 Add helper of for_each_mp_bvec() for io_uring to import fixed kernel buffer. Signed-off-by: Ming Lei --- include/linux/bvec.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/bvec.h b/include/linux/bvec.h index ba8f52d48b94..204b22a99c4b 100644 --- a/include/linux/bvec.h +++ b/include/linux/bvec.h @@ -184,6 +184,12 @@ static inline void bvec_iter_advance_single(const struct bio_vec *bv, ((bvl = bvec_iter_bvec((bio_vec), (iter))), 1); \ bvec_iter_advance_single((bio_vec), &(iter), (bvl).bv_len)) +#define for_each_mp_bvec(bvl, bio_vec, iter, start) \ + for (iter = (start); \ + (iter).bi_size && \ + ((bvl = mp_bvec_iter_bvec((bio_vec), (iter))), 1); \ + bvec_iter_advance_single((bio_vec), &(iter), (bvl).bv_len)) + /* for iterating one bio from start to end */ #define BVEC_ITER_ALL_INIT (struct bvec_iter) \ { \ -- 2.47.0