From patchwork Tue Mar 9 15:53:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12125893 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 4DA39C433E0 for ; Tue, 9 Mar 2021 15:56:37 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id DB0A365279 for ; Tue, 9 Mar 2021 15:56:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DB0A365279 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 6DDCB8D010B; Tue, 9 Mar 2021 10:56:36 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 68DA98D007F; Tue, 9 Mar 2021 10:56:36 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 556038D010B; Tue, 9 Mar 2021 10:56:36 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0201.hostedemail.com [216.40.44.201]) by kanga.kvack.org (Postfix) with ESMTP id 366928D007F for ; Tue, 9 Mar 2021 10:56:36 -0500 (EST) Received: from smtpin18.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id EF31D12FD for ; Tue, 9 Mar 2021 15:56:35 +0000 (UTC) X-FDA: 77900788350.18.A802160 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf13.hostedemail.com (Postfix) with ESMTP id 47240E016142 for ; Tue, 9 Mar 2021 15:56:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=H2ld+QgidDGzgxm+N1lJ7nVSOxHC57yc0v6xTacIbY4=; b=iK2JlFyhSt2fAxdUtndJ31jjUd hNycyMaLROgr5IP/6Vd9G0ejFwt4PjtbUOIllT6lpcyNO5JSrh2jzNp2gMWO+ruzsynjop/tobJfY Ktw36wP3bjGaJFUqad8boRQbzSj/WVqC2vdDF1erI4/UR8j/TiljW5ZWLiSLDSKyNVvtr+fZ51EBV pCBrYUDXEQT4MqRPo4dXzQFXnfTWXGQxciUvtoMiNYfJ8YId0Jxl0+zNdyZ/Wd4dtmXuU6KZ77azt BWf2kqMD8H4xw36e5pyhM+5SVtwMNqv43fs7ARRc/rD1HyYU5hEmwq8fHIT4tm/rith+FefXPeIqW /gsKX6iQ==; Received: from [2001:4bb8:180:9884:c70:4a89:bc61:3] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lJehM-000lUZ-SR; Tue, 09 Mar 2021 15:55:09 +0000 From: Christoph Hellwig To: Al Viro Cc: Andrew Morton , Daniel Vetter , Nadav Amit , "VMware, Inc." , "Michael S. Tsirkin" , David Hildenbrand , Minchan Kim , Nitin Gupta , Jason Gunthorpe , Alex Williamson , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 7/9] iomem: remove the iomem file system Date: Tue, 9 Mar 2021 16:53:46 +0100 Message-Id: <20210309155348.974875-8-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210309155348.974875-1-hch@lst.de> References: <20210309155348.974875-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html X-Stat-Signature: rgbx9px7nz7y493ykm1ss5ehy9uert8c X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 47240E016142 Received-SPF: none (casper.srs.infradead.org>: No applicable sender policy available) receiver=imf13; identity=mailfrom; envelope-from=""; helo=casper.infradead.org; client-ip=90.155.50.34 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1615305390-530368 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Just use the generic anon_inode file system. Signed-off-by: Christoph Hellwig Reported-by: kernel test robot --- kernel/resource.c | 30 ++++-------------------------- 1 file changed, 4 insertions(+), 26 deletions(-) diff --git a/kernel/resource.c b/kernel/resource.c index 0fd091a3f2fc66..12560553c26796 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include @@ -1838,37 +1839,14 @@ static int __init strict_iomem(char *str) return 1; } -static int iomem_fs_init_fs_context(struct fs_context *fc) -{ - return init_pseudo(fc, DEVMEM_MAGIC) ? 0 : -ENOMEM; -} - -static struct file_system_type iomem_fs_type = { - .name = "iomem", - .owner = THIS_MODULE, - .init_fs_context = iomem_fs_init_fs_context, - .kill_sb = kill_anon_super, -}; - static int __init iomem_init_inode(void) { - static struct vfsmount *iomem_vfs_mount; - static int iomem_fs_cnt; struct inode *inode; - int rc; - - rc = simple_pin_fs(&iomem_fs_type, &iomem_vfs_mount, &iomem_fs_cnt); - if (rc < 0) { - pr_err("Cannot mount iomem pseudo filesystem: %d\n", rc); - return rc; - } - inode = alloc_anon_inode_sb(iomem_vfs_mount->mnt_sb); + inode = alloc_anon_inode(); if (IS_ERR(inode)) { - rc = PTR_ERR(inode); - pr_err("Cannot allocate inode for iomem: %d\n", rc); - simple_release_fs(&iomem_vfs_mount, &iomem_fs_cnt); - return rc; + pr_err("Cannot allocate inode for iomem: %zd\n", PTR_ERR(inode)); + return PTR_ERR(inode); } /*