From patchwork Fri Apr 9 16:43:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Coly Li X-Patchwork-Id: 12194553 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,URIBL_BLOCKED,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 9C575C433ED for ; Fri, 9 Apr 2021 16:44:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 78F64610CF for ; Fri, 9 Apr 2021 16:44:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234049AbhDIQow (ORCPT ); Fri, 9 Apr 2021 12:44:52 -0400 Received: from mx2.suse.de ([195.135.220.15]:35170 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233993AbhDIQov (ORCPT ); Fri, 9 Apr 2021 12:44:51 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id A4053AE6D; Fri, 9 Apr 2021 16:44:37 +0000 (UTC) From: Coly Li To: linux-bcache@vger.kernel.org Cc: linux-block@vger.kernel.org, linux-nvdimm@lists.01.org, axboe@kernel.dk, jianpeng.ma@intel.com, qiaowei.ren@intel.com, hare@suse.com, jack@suse.cz, dan.j.williams@intel.com, Coly Li Subject: [PATCH v7 07/16] bcache: nvm-pages fixes for bcache integration testing Date: Sat, 10 Apr 2021 00:43:34 +0800 Message-Id: <20210409164343.56828-8-colyli@suse.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210409164343.56828-1-colyli@suse.de> References: <20210409164343.56828-1-colyli@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org There are two minor fixes in nvm-pages code, which can be added in next nvm-pages series. Then I can drop this patch. Signed-off-by: Coly Li Cc: Jianpeng Ma Cc: Qiaowei Ren --- drivers/md/bcache/nvm-pages.c | 29 +++++++++++++++++++++-------- drivers/md/bcache/nvm-pages.h | 1 + 2 files changed, 22 insertions(+), 8 deletions(-) diff --git a/drivers/md/bcache/nvm-pages.c b/drivers/md/bcache/nvm-pages.c index 2ba02091bccf..c3ab396a45fa 100644 --- a/drivers/md/bcache/nvm-pages.c +++ b/drivers/md/bcache/nvm-pages.c @@ -73,24 +73,32 @@ static inline void remove_owner_space(struct bch_nvm_namespace *ns, static struct bch_nvm_pages_owner_head *find_owner_head(const char *owner_uuid, bool create) { struct bch_owner_list_head *owner_list_head = only_set->owner_list_head; + struct bch_nvm_pages_owner_head *owner_head = NULL; int i; + if (owner_list_head == NULL) + goto out; + for (i = 0; i < only_set->owner_list_used; i++) { - if (!memcmp(owner_uuid, owner_list_head->heads[i].uuid, 16)) - return &(owner_list_head->heads[i]); + if (!memcmp(owner_uuid, owner_list_head->heads[i].uuid, 16)) { + owner_head = &(owner_list_head->heads[i]); + break; + } } - if (create) { + if (!owner_head && create) { int used = only_set->owner_list_used; - BUG_ON(only_set->owner_list_size == used); - memcpy(owner_list_head->heads[used].uuid, owner_uuid, 16); + BUG_ON((used > 0) && (only_set->owner_list_size == used)); + memcpy_flushcache(owner_list_head->heads[used].uuid, owner_uuid, 16); only_set->owner_list_used++; owner_list_head->used++; - return &(owner_list_head->heads[used]); - } else - return NULL; + owner_head = &(owner_list_head->heads[used]); + } + +out: + return owner_head; } static struct bch_nvm_pgalloc_recs *find_empty_pgalloc_recs(void) @@ -324,6 +332,10 @@ void *bch_nvm_alloc_pages(int order, const char *owner_uuid) mutex_lock(&only_set->lock); owner_head = find_owner_head(owner_uuid, true); + if (!owner_head) { + pr_err("can't find bch_nvm_pgalloc_recs by(uuid=%s)\n", owner_uuid); + goto unlock; + } for (j = 0; j < only_set->total_namespaces_nr; j++) { struct bch_nvm_namespace *ns = only_set->nss[j]; @@ -369,6 +381,7 @@ void *bch_nvm_alloc_pages(int order, const char *owner_uuid) } } +unlock: mutex_unlock(&only_set->lock); return kaddr; } diff --git a/drivers/md/bcache/nvm-pages.h b/drivers/md/bcache/nvm-pages.h index 87b1efc301c8..b8a5cd0890d3 100644 --- a/drivers/md/bcache/nvm-pages.h +++ b/drivers/md/bcache/nvm-pages.h @@ -66,6 +66,7 @@ struct bch_nvm_pages_owner_head *bch_get_allocated_pages(const char *owner_uuid) #else static inline struct bch_nvm_namespace *bch_register_namespace(const char *dev_path) +{ return NULL; } static inline int bch_nvm_init(void)