From mboxrd@z Thu Jan 1 00:00:00 1970 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,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 0A626C433B4 for ; Fri, 23 Apr 2021 22:06:42 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C2EDF61468 for ; Fri, 23 Apr 2021 22:06:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C2EDF61468 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=mjyte5hDVKhjsONQsdYEjROfPfH0MGgKfCeCYr1BzIg=; b=D8nh37CntgDCDrPvQ9wRlYFHB leFivuL6DuJmnBk1wROEdgT6eLGN+uLcpeoFHmPlHUpBaqzDgavfOp931S5VlNHIxy93j3uG8W13+ xzhjOdfTZlSoQ820r1qyVoB+GLf2ujNmCzt81K1VQDjYYo5mgh+WVbzm7HxpKVh/MwbLq/KpQhHms UmlOHvGLvnPrD2G7psK2uz3KLkiloeCCC1KWSupc/sGzDhXy3YdR5pGVth+z6P7IIo9HZxTN8z/bA s7tG8TRzVWeQTuq5wV7tlN6nXa/1DexPBTsHNdFVpVGxWa1yx6/YV2I8hMASYkV/DU88wxb2WQiS6 FJPYubr+g==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1la3wK-002TFp-Er; Fri, 23 Apr 2021 22:06:20 +0000 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1la3w4-002TDY-DE for linux-nvme@desiato.infradead.org; Fri, 23 Apr 2021 22:06:04 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=J/dMmdW+iVvwyTpM2onmGaS7jBAOwWpdGXnCEKVSxu8=; b=Rj7jI7Ceqq8LndKA4Osdb/Hkch KuH6szgnec8hDfzFIlm7CpsmcZGFM+cu+sRJWOfSrPr2v6jZSOqHBeTA062rndzsfO8BLK72t/HW8 blcyNdL1btHOQD+2fhHRND+vcgmH252c1ca41L90Q+pVsPcLCaC8bXmJjRirGkXa7bXdhCsySdL0U pax3ykFvdgv1tD9tlYgtAqMsyfxnC4zh5xPzdfgqyP2u/crdEHBZf+Zi2jMJSfwq1SBHtCfFtXRUo tAaovIbK//EvHeP23b8H1hngrb4tsiS/+b6RX9WtTpOT6O3RTOswPRmlQJ+iTO92c5p2uzmjqhNC+ v0V27ibw==; Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1la3w2-00Ej83-3A for linux-nvme@lists.infradead.org; Fri, 23 Apr 2021 22:06:03 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 373A9613AB; Fri, 23 Apr 2021 22:06:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1619215561; bh=W6iSvtmcGry1oGNwCHkbmf8AJ6FjkkxhjYdlYI6DiKU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SEK+OeK4LP79mREz/vtHtLxP6evSWlgetgB3oPi98zYDr9A4qIRm/ZlXHKER93LyZ bKQmG29duJ3brVA0uQnFNRHsfns48RkkwNvOkfntzWDmhABi81kox58u2G0njNFS/m kE/nzwNlkzmopyfz058boUv9jW2qps3ETAKcyGcAKrOA0E708dyW+hlt4A7tEVdcmk qZeFJEgUPg5Y3yeiQ9QYNgmMU+446gLji+GSGiF2++1M/Zk4dxAEuKjkVFaDUCXZC7 z7lfb3NTOR71RRrKQVx97d7FLUUrnpxEgFeHTAaNGtWZpnTSpnNDdy2JaryPl9FWgn 22c7vEE79mFNg== From: Keith Busch To: linux-nvme@lists.infradead.org, sagi@grimberg.me, hch@lst.de, axboe@kernel.dk, linux-block@vger.kernel.org Cc: Yuanyuan Zhong , Casey Chen , Keith Busch Subject: [PATCHv2 1/5] block: support polling through blk_execute_rq Date: Fri, 23 Apr 2021 15:05:54 -0700 Message-Id: <20210423220558.40764-2-kbusch@kernel.org> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20210423220558.40764-1-kbusch@kernel.org> References: <20210423220558.40764-1-kbusch@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210423_150602_170329_C0B589CF X-CRM114-Status: GOOD ( 10.57 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org Poll for completions if the request's hctx is a polling type. Signed-off-by: Keith Busch --- block/blk-exec.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/block/blk-exec.c b/block/blk-exec.c index beae70a0e5e5..b960ad187ba5 100644 --- a/block/blk-exec.c +++ b/block/blk-exec.c @@ -63,6 +63,11 @@ void blk_execute_rq_nowait(struct gendisk *bd_disk, struct request *rq, } EXPORT_SYMBOL_GPL(blk_execute_rq_nowait); +static bool blk_rq_is_poll(struct request *rq) +{ + return rq->mq_hctx && rq->mq_hctx->type == HCTX_TYPE_POLL; +} + /** * blk_execute_rq - insert a request into queue for execution * @bd_disk: matching gendisk @@ -83,7 +88,12 @@ void blk_execute_rq(struct gendisk *bd_disk, struct request *rq, int at_head) /* Prevent hang_check timer from firing at us during very long I/O */ hang_check = sysctl_hung_task_timeout_secs; - if (hang_check) + if (blk_rq_is_poll(rq)) { + do { + blk_poll(rq->q, request_to_qc_t(rq->mq_hctx, rq), true); + cond_resched(); + } while (!completion_done(&wait)); + } else if (hang_check) while (!wait_for_completion_io_timeout(&wait, hang_check * (HZ/2))); else wait_for_completion_io(&wait); -- 2.25.4 _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme