From patchwork Mon Dec 2 15:39:06 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 11269269 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DCAA8109A for ; Mon, 2 Dec 2019 15:39:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C4D4620881 for ; Mon, 2 Dec 2019 15:39:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727555AbfLBPj2 (ORCPT ); Mon, 2 Dec 2019 10:39:28 -0500 Received: from mx2.suse.de ([195.135.220.15]:44716 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727549AbfLBPj1 (ORCPT ); Mon, 2 Dec 2019 10:39:27 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 6E5A7C1A7; Mon, 2 Dec 2019 15:39:25 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: Jens Axboe , Christoph Hellwig , James Bottomley , John Garry , Ming Lei , linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, Hannes Reinecke Subject: [PATCH 03/11] blk-mq: rename blk_mq_update_tag_set_depth() Date: Mon, 2 Dec 2019 16:39:06 +0100 Message-Id: <20191202153914.84722-4-hare@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20191202153914.84722-1-hare@suse.de> References: <20191202153914.84722-1-hare@suse.de> Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org The function does not set the depth, but rather transitions from shared to non-shared queues and vice versa. So rename it to blk_mq_update_tag_set_shared() to better reflect its purpose. Signed-off-by: Hannes Reinecke --- block/blk-mq-tag.c | 18 ++++++++++-------- block/blk-mq.c | 8 ++++---- 2 files changed, 14 insertions(+), 12 deletions(-) diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c index d7aa23c82dbf..f5009587e1b5 100644 --- a/block/blk-mq-tag.c +++ b/block/blk-mq-tag.c @@ -440,24 +440,22 @@ static int bt_alloc(struct sbitmap_queue *bt, unsigned int depth, node); } -static struct blk_mq_tags *blk_mq_init_bitmap_tags(struct blk_mq_tags *tags, - int node, int alloc_policy) +static int blk_mq_init_bitmap_tags(struct blk_mq_tags *tags, + int node, int alloc_policy) { unsigned int depth = tags->nr_tags - tags->nr_reserved_tags; bool round_robin = alloc_policy == BLK_TAG_ALLOC_RR; if (bt_alloc(&tags->bitmap_tags, depth, round_robin, node)) - goto free_tags; + return -ENOMEM; if (bt_alloc(&tags->breserved_tags, tags->nr_reserved_tags, round_robin, node)) goto free_bitmap_tags; - return tags; + return 0; free_bitmap_tags: sbitmap_queue_free(&tags->bitmap_tags); -free_tags: - kfree(tags); - return NULL; + return -ENOMEM; } struct blk_mq_tags *blk_mq_init_tags(unsigned int total_tags, @@ -478,7 +476,11 @@ struct blk_mq_tags *blk_mq_init_tags(unsigned int total_tags, tags->nr_tags = total_tags; tags->nr_reserved_tags = reserved_tags; - return blk_mq_init_bitmap_tags(tags, node, alloc_policy); + if (blk_mq_init_bitmap_tags(tags, node, alloc_policy) < 0) { + kfree(tags); + tags = NULL; + } + return tags; } void blk_mq_free_tags(struct blk_mq_tags *tags) diff --git a/block/blk-mq.c b/block/blk-mq.c index 6b39cf0efdcd..91950d3e436a 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -2581,8 +2581,8 @@ static void queue_set_hctx_shared(struct request_queue *q, bool shared) } } -static void blk_mq_update_tag_set_depth(struct blk_mq_tag_set *set, - bool shared) +static void blk_mq_update_tag_set_shared(struct blk_mq_tag_set *set, + bool shared) { struct request_queue *q; @@ -2605,7 +2605,7 @@ static void blk_mq_del_queue_tag_set(struct request_queue *q) /* just transitioned to unshared */ set->flags &= ~BLK_MQ_F_TAG_QUEUE_SHARED; /* update existing queue */ - blk_mq_update_tag_set_depth(set, false); + blk_mq_update_tag_set_shared(set, false); } mutex_unlock(&set->tag_list_lock); INIT_LIST_HEAD(&q->tag_set_list); @@ -2623,7 +2623,7 @@ static void blk_mq_add_queue_tag_set(struct blk_mq_tag_set *set, !(set->flags & BLK_MQ_F_TAG_QUEUE_SHARED)) { set->flags |= BLK_MQ_F_TAG_QUEUE_SHARED; /* update existing queue */ - blk_mq_update_tag_set_depth(set, true); + blk_mq_update_tag_set_shared(set, true); } if (set->flags & BLK_MQ_F_TAG_QUEUE_SHARED) queue_set_hctx_shared(q, true);