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=-14.8 required=3.0 tests=BAYES_00, DATE_IN_FUTURE_06_12,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 09C01C64E7C for ; Thu, 3 Dec 2020 03:11:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B508121D91 for ; Thu, 3 Dec 2020 03:11:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727777AbgLCDL2 (ORCPT ); Wed, 2 Dec 2020 22:11:28 -0500 Received: from mga07.intel.com ([134.134.136.100]:1942 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726977AbgLCDL2 (ORCPT ); Wed, 2 Dec 2020 22:11:28 -0500 IronPort-SDR: +NYipkaFYaSjAchYlC8F/c5zCintIn9gZzgIuBHWYRQMTfnhoUlHtMwCWhvRkx9Cf9RAhoHqPI rjVqc9SpNpqQ== X-IronPort-AV: E=McAfee;i="6000,8403,9823"; a="237248554" X-IronPort-AV: E=Sophos;i="5.78,388,1599548400"; d="scan'208";a="237248554" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Dec 2020 19:10:24 -0800 IronPort-SDR: Hcl+FI+V44SDsD489QvzjIlJlUs6B3zxT5nGnz2yqR4tgS3buQG0Jtpc4LUBoEdSYxBBUGVYYQ Gw9gZ6sJVGJA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.78,388,1599548400"; d="scan'208";a="481801550" Received: from ceph.sh.intel.com ([10.239.241.176]) by orsmga004.jf.intel.com with ESMTP; 02 Dec 2020 19:10:23 -0800 From: Qiaowei Ren To: Coly Li Cc: linux-bcache@vger.kernel.org, Qiaowei Ren , Jianpeng Ma Subject: [RFC PATCH 6/8] bcache: get allocated pages from specific owner Date: Thu, 3 Dec 2020 05:53:35 -0500 Message-Id: <20201203105337.4592-7-qiaowei.ren@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201203105337.4592-1-qiaowei.ren@intel.com> References: <20201203105337.4592-1-qiaowei.ren@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-bcache@vger.kernel.org This patch implements get_allocated_pages() of the buddy to be used to get allocated pages from specific owner. Signed-off-by: Jianpeng Ma Signed-off-by: Qiaowei Ren --- drivers/md/bcache/nvm-pages.c | 36 +++++++++++++++++++++++++++++++++++ drivers/md/bcache/nvm-pages.h | 7 +++++++ 2 files changed, 43 insertions(+) diff --git a/drivers/md/bcache/nvm-pages.c b/drivers/md/bcache/nvm-pages.c index 16b65a866041..e8765b0b3398 100644 --- a/drivers/md/bcache/nvm-pages.c +++ b/drivers/md/bcache/nvm-pages.c @@ -373,6 +373,42 @@ void *nvm_alloc_pages(int order, const char *owner_uuid) } EXPORT_SYMBOL_GPL(nvm_alloc_pages); +struct extent *get_allocated_pages(const char *owner_uuid) +{ + struct owner_list *owner_list = find_owner_list(owner_uuid, false); + int i; + struct extent *head = NULL; + + if (owner_list == NULL) + return NULL; + + for (i = 0; i < only_set->total_namespaces_nr; i++) { + struct list_head *l; + struct nvm_alloced_recs *alloced_recs = owner_list->alloced_recs[i]; + + if (!alloced_recs || alloced_recs->size == 0) + continue; + + l = alloced_recs->extent_head.next; + while (l != &alloced_recs->extent_head) { + struct extent *e = container_of(l, struct extent, list); + struct extent *tmp = kzalloc(sizeof(struct extent), GFP_KERNEL); + + tmp->kaddr = e->kaddr; + tmp->nr = e->nr; + + if (head != NULL) + list_add_tail(&tmp->list, &head->list); + else + head = tmp; + + l = l->next; + } + } + return head; +} +EXPORT_SYMBOL_GPL(get_allocated_pages); + static void init_owner_info(struct nvm_namespace *ns) { struct owner_list_head *owner_list_head; diff --git a/drivers/md/bcache/nvm-pages.h b/drivers/md/bcache/nvm-pages.h index 1e435ce0ddf4..4f0374459459 100644 --- a/drivers/md/bcache/nvm-pages.h +++ b/drivers/md/bcache/nvm-pages.h @@ -80,6 +80,8 @@ extern void bch_nvm_exit(void); extern void *nvm_alloc_pages(int order, const char *owner_uuid); extern void nvm_free_pages(void *addr, int order, const char *owner_uuid); +extern struct extent *get_allocated_pages(const char *owner_uuid); + #else static inline struct nvm_namespace *register_namespace(const char *dev_path) @@ -95,6 +97,11 @@ static inline void bch_nvm_exit(void) { } static inline void *nvm_alloc_pages(int order, const char *owner_uuid) { } static inline void nvm_free_pages(void *addr, int order, const char *owner_uuid) { } +static inline struct extent *get_allocated_pages(const char *owner_uuid) +{ + return NULL; +} + #endif /* CONFIG_BCACHE_NVM_PAGES */ #endif /* _BCACHE_NVM_PAGES_H */ -- 2.17.1