From patchwork Mon Nov 11 08:36:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhihao Cheng X-Patchwork-Id: 2009608 X-Patchwork-Delegate: david.oberhollenzer@sigma-star.at Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=eV1a35N2; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=patchwork.ozlabs.org) Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4Xn3C210zdz1xty for ; Mon, 11 Nov 2024 19:49:50 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; 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=jDXQ+uci4CLFCb3vqhh6fOfG5i0+YQQU8GLOFpRRNMw=; b=eV1a35N2UYFuHj GTQPdMkoq8Uf01oV+qPE+oPmwWYE+wWO22mlOMmLaxp/9XDKRvX4Io5+ljkYiW7CQJPiF9D/iC7oN /vkEI9dT/BkdW/iuaDHvd2pkd/ltekPIwsdGAFWvgfDBNw6Hj5yW1sU1L1yvmBJ2xEYp54V7Mb53V 5w79sxYMWHCuF02+miTxf+mtb2Prmdd+UqVIZM6sg69S8jK/LNuSbsO4hD//wZuzKTjqq/Z5jV25l T4YhsyNgrNHdGB9IV4xOWlpWz9rUNpmFYnhbRswKPkyhSW7B+/9ywfOyEXQDIx6nU0SBkb5R/T9SO VmDKjFeL8QGd60ga5PLg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tAQ79-0000000GsJl-0vBi; Mon, 11 Nov 2024 08:49:39 +0000 Received: from szxga07-in.huawei.com ([45.249.212.35]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tAPwP-0000000GphR-13Li for linux-mtd@lists.infradead.org; Mon, 11 Nov 2024 08:38:42 +0000 Received: from mail.maildlp.com (unknown [172.19.162.112]) by szxga07-in.huawei.com (SkyGuard) with ESMTP id 4Xn2vv6M6Sz1hwN7; Mon, 11 Nov 2024 16:36:43 +0800 (CST) Received: from kwepemk500005.china.huawei.com (unknown [7.202.194.90]) by mail.maildlp.com (Postfix) with ESMTPS id C70CC14022D; Mon, 11 Nov 2024 16:38:31 +0800 (CST) Received: from huawei.com (10.175.112.188) by kwepemk500005.china.huawei.com (7.202.194.90) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Mon, 11 Nov 2024 16:38:31 +0800 From: Zhihao Cheng To: , , CC: Subject: [PATCH mtd-utils v2 RESEND 018/102] ubifs-utils: Add rwsem implementations Date: Mon, 11 Nov 2024 16:36:49 +0800 Message-ID: <20241111083711.1916125-19-chengzhihao1@huawei.com> X-Mailer: git-send-email 2.46.1 In-Reply-To: <20241111083711.1916125-1-chengzhihao1@huawei.com> References: <20241111083711.1916125-1-chengzhihao1@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.112.188] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemk500005.china.huawei.com (7.202.194.90) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241111_003833_623828_D2B95912 X-CRM114-Status: GOOD ( 11.91 ) X-Spam-Score: -4.2 (----) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Add rwsem implementations, because there are some rwsems (eg. c->commit_sem) used in UBIFS linux kernel libs. The rwsem is implemented based on pthread mutex. This is a preparation for replacing implementation of UBIFS utils with linux kernel libs. Content analysis details: (-4.2 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 RCVD_IN_VALIDITY_CERTIFIED_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. [45.249.212.35 listed in sa-trusted.bondedsender.org] 0.0 RCVD_IN_VALIDITY_SAFE_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. [45.249.212.35 listed in sa-accredit.habeas.com] 0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [45.249.212.35 listed in wl.mailspike.net] -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [45.249.212.35 listed in list.dnswl.org] 0.0 RCVD_IN_VALIDITY_RPBL_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. [45.249.212.35 listed in bl.score.senderscore.com] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Add rwsem implementations, because there are some rwsems (eg. c->commit_sem) used in UBIFS linux kernel libs. The rwsem is implemented based on pthread mutex. This is a preparation for replacing implementation of UBIFS utils with linux kernel libs. Signed-off-by: Zhihao Cheng --- ubifs-utils/Makemodule.am | 1 + ubifs-utils/common/rwsem.h | 19 +++++++++++++++++++ 2 files changed, 20 insertions(+) create mode 100644 ubifs-utils/common/rwsem.h diff --git a/ubifs-utils/Makemodule.am b/ubifs-utils/Makemodule.am index 9f33f0db..ece8a6e9 100644 --- a/ubifs-utils/Makemodule.am +++ b/ubifs-utils/Makemodule.am @@ -7,6 +7,7 @@ common_SOURCES = \ ubifs-utils/common/bitops.c \ ubifs-utils/common/spinlock.h \ ubifs-utils/common/mutex.h \ + ubifs-utils/common/rwsem.h \ ubifs-utils/common/kmem.h \ ubifs-utils/common/kmem.c \ ubifs-utils/common/defs.h \ diff --git a/ubifs-utils/common/rwsem.h b/ubifs-utils/common/rwsem.h new file mode 100644 index 00000000..3761724b --- /dev/null +++ b/ubifs-utils/common/rwsem.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __LINUX_RWSEM_H_ +#define __LINUX_RWSEM_H_ + +#include + +struct rw_semaphore { + pthread_mutex_t lock; +}; + +#define init_rwsem(x) pthread_mutex_init(&(x)->lock, NULL) + +#define down_read(x) pthread_mutex_lock(&(x)->lock) +#define down_write(x) pthread_mutex_lock(&(x)->lock) +#define up_read(x) pthread_mutex_unlock(&(x)->lock) +#define up_write(x) pthread_mutex_unlock(&(x)->lock) +#define down_write_trylock(x) (pthread_mutex_trylock(&(x)->lock) == 0) + +#endif