From patchwork Fri Sep 24 08:28:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 12514507 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 0A551C433EF for ; Fri, 24 Sep 2021 08:34:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ED241610CF for ; Fri, 24 Sep 2021 08:34:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244838AbhIXIfx (ORCPT ); Fri, 24 Sep 2021 04:35:53 -0400 Received: from frasgout.his.huawei.com ([185.176.79.56]:3865 "EHLO frasgout.his.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244897AbhIXIf2 (ORCPT ); Fri, 24 Sep 2021 04:35:28 -0400 Received: from fraeml707-chm.china.huawei.com (unknown [172.18.147.226]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4HG4xp3TXxz67kg2; Fri, 24 Sep 2021 16:31:26 +0800 (CST) Received: from lhreml724-chm.china.huawei.com (10.201.108.75) by fraeml707-chm.china.huawei.com (10.206.15.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.8; Fri, 24 Sep 2021 10:33:53 +0200 Received: from localhost.localdomain (10.69.192.58) by lhreml724-chm.china.huawei.com (10.201.108.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.8; Fri, 24 Sep 2021 09:33:51 +0100 From: John Garry To: CC: , , , , , "John Garry" Subject: [PATCH v4 11/13] blk-mq: Refactor and rename blk_mq_free_map_and_{requests->rqs}() Date: Fri, 24 Sep 2021 16:28:28 +0800 Message-ID: <1632472110-244938-12-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1632472110-244938-1-git-send-email-john.garry@huawei.com> References: <1632472110-244938-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To lhreml724-chm.china.huawei.com (10.201.108.75) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Refactor blk_mq_free_map_and_requests() such that it can be used at many sites at which the tag map and rqs are freed. Also rename to blk_mq_free_map_and_rqs(), which is shorter and matches the alloc equivalent. Suggested-by: Ming Lei Signed-off-by: John Garry Reviewed-by: Hannes Reinecke --- block/blk-mq-tag.c | 3 +-- block/blk-mq.c | 40 ++++++++++++++++++++++++---------------- block/blk-mq.h | 4 +++- 3 files changed, 28 insertions(+), 19 deletions(-) diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c index db99f1246795..a0ecc6d88f84 100644 --- a/block/blk-mq-tag.c +++ b/block/blk-mq-tag.c @@ -607,8 +607,7 @@ int blk_mq_tag_update_depth(struct blk_mq_hw_ctx *hctx, if (!new) return -ENOMEM; - blk_mq_free_rqs(set, *tagsptr, hctx->queue_num); - blk_mq_free_rq_map(*tagsptr, set->flags); + blk_mq_free_map_and_rqs(set, *tagsptr, hctx->queue_num); *tagsptr = new; } else { /* diff --git a/block/blk-mq.c b/block/blk-mq.c index 46772773b9c4..464ea20b9bcb 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -2878,15 +2878,15 @@ static bool __blk_mq_alloc_map_and_rqs(struct blk_mq_tag_set *set, return set->tags[hctx_idx]; } -static void blk_mq_free_map_and_requests(struct blk_mq_tag_set *set, - unsigned int hctx_idx) +void blk_mq_free_map_and_rqs(struct blk_mq_tag_set *set, + struct blk_mq_tags *tags, + unsigned int hctx_idx) { unsigned int flags = set->flags; - if (set->tags && set->tags[hctx_idx]) { - blk_mq_free_rqs(set, set->tags[hctx_idx], hctx_idx); - blk_mq_free_rq_map(set->tags[hctx_idx], flags); - set->tags[hctx_idx] = NULL; + if (tags) { + blk_mq_free_rqs(set, tags, hctx_idx); + blk_mq_free_rq_map(tags, flags); } } @@ -2967,8 +2967,10 @@ static void blk_mq_map_swqueue(struct request_queue *q) * fallback in case of a new remap fails * allocation */ - if (i && set->tags[i]) - blk_mq_free_map_and_requests(set, i); + if (i && set->tags[i]) { + blk_mq_free_map_and_rqs(set, set->tags[i], i); + set->tags[i] = NULL; + } hctx->tags = NULL; continue; @@ -3264,8 +3266,8 @@ static void blk_mq_realloc_hw_ctxs(struct blk_mq_tag_set *set, struct blk_mq_hw_ctx *hctx = hctxs[j]; if (hctx) { - if (hctx->tags) - blk_mq_free_map_and_requests(set, j); + blk_mq_free_map_and_rqs(set, set->tags[j], j); + set->tags[j] = NULL; blk_mq_exit_hctx(q, set, hctx, j); hctxs[j] = NULL; } @@ -3361,8 +3363,10 @@ static int __blk_mq_alloc_rq_maps(struct blk_mq_tag_set *set) return 0; out_unwind: - while (--i >= 0) - blk_mq_free_map_and_requests(set, i); + while (--i >= 0) { + blk_mq_free_map_and_rqs(set, set->tags[i], i); + set->tags[i] = NULL; + } return -ENOMEM; } @@ -3557,8 +3561,10 @@ int blk_mq_alloc_tag_set(struct blk_mq_tag_set *set) return 0; out_free_mq_rq_maps: - for (i = 0; i < set->nr_hw_queues; i++) - blk_mq_free_map_and_requests(set, i); + for (i = 0; i < set->nr_hw_queues; i++) { + blk_mq_free_map_and_rqs(set, set->tags[i], i); + set->tags[i] = NULL; + } out_free_mq_map: for (i = 0; i < set->nr_maps; i++) { kfree(set->map[i].mq_map); @@ -3590,8 +3596,10 @@ void blk_mq_free_tag_set(struct blk_mq_tag_set *set) { int i, j; - for (i = 0; i < set->nr_hw_queues; i++) - blk_mq_free_map_and_requests(set, i); + for (i = 0; i < set->nr_hw_queues; i++) { + blk_mq_free_map_and_rqs(set, set->tags[i], i); + set->tags[i] = NULL; + } if (blk_mq_is_sbitmap_shared(set->flags)) blk_mq_exit_shared_sbitmap(set); diff --git a/block/blk-mq.h b/block/blk-mq.h index 83585a344568..bcb0ca89d37a 100644 --- a/block/blk-mq.h +++ b/block/blk-mq.h @@ -57,7 +57,9 @@ void blk_mq_free_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags, void blk_mq_free_rq_map(struct blk_mq_tags *tags, unsigned int flags); struct blk_mq_tags *blk_mq_alloc_map_and_rqs(struct blk_mq_tag_set *set, unsigned int hctx_idx, unsigned int depth); - +void blk_mq_free_map_and_rqs(struct blk_mq_tag_set *set, + struct blk_mq_tags *tags, + unsigned int hctx_idx); /* * Internal helpers for request insertion into sw queues */