From patchwork Tue Mar 9 15:53:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12125889 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 10857C433E0 for ; Tue, 9 Mar 2021 15:56:23 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7C7A465285 for ; Tue, 9 Mar 2021 15:56:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7C7A465285 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 027C28D0109; Tue, 9 Mar 2021 10:56:22 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id F40DD8D007F; Tue, 9 Mar 2021 10:56:21 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DE1E68D0109; Tue, 9 Mar 2021 10:56:21 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0250.hostedemail.com [216.40.44.250]) by kanga.kvack.org (Postfix) with ESMTP id C0B588D007F for ; Tue, 9 Mar 2021 10:56:21 -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 7655E12FD for ; Tue, 9 Mar 2021 15:56:21 +0000 (UTC) X-FDA: 77900787762.18.A6FD3BC Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf11.hostedemail.com (Postfix) with ESMTP id 80A7320053E6 for ; Tue, 9 Mar 2021 15:56:12 +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=3M8hBLIawJHMtUGgys5VeJcEPDN2yS9O0RGnqufBgKI=; b=U2dY1YoxC/q1JkvxYuErcUmM7G yNLzZEFPUD/PpwSMC0sxlmTrm15YRnKHKJAt+fMXoP9qEB/cTAxoI5Pm6jwZZk+bXrHectQuAsiFC rX1aVSPbDujtJRpARm7H+EDSahwdvGZgm8tKkGQEqHEF57ViiLlCwMAkXxyCyYQO/nmP1hGHolJS5 aHHrsNWOUhNj6riEwaOc9ADfSNG2qUcuWpHQnzqa0IYvDrRP3H7eJdz57HO8orK9CyOiPihYKpRWJ lwcNNXwHH8HGXZTyH602DtYjkOGdhM7VkOAiZZgjli5xWKnsO06znGdhAsbUh5UFfx9JQ9Ikwrkbz Eeiwq1jA==; 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 1lJehA-000lO8-7a; Tue, 09 Mar 2021 15:54:54 +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 5/9] vmw_balloon: remove the balloon-vmware file system Date: Tue, 9 Mar 2021 16:53:44 +0100 Message-Id: <20210309155348.974875-6-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-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 80A7320053E6 X-Stat-Signature: hnxzcw77ruebadd717jd7tp848eff9b7 Received-SPF: none (casper.srs.infradead.org>: No applicable sender policy available) receiver=imf11; identity=mailfrom; envelope-from=""; helo=casper.infradead.org; client-ip=90.155.50.34 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1615305372-597432 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 --- drivers/misc/vmw_balloon.c | 24 ++---------------------- 1 file changed, 2 insertions(+), 22 deletions(-) diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c index 5d057a05ddbee8..be4be32f858253 100644 --- a/drivers/misc/vmw_balloon.c +++ b/drivers/misc/vmw_balloon.c @@ -16,6 +16,7 @@ //#define DEBUG #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#include #include #include #include @@ -1735,20 +1736,6 @@ static inline void vmballoon_debugfs_exit(struct vmballoon *b) #ifdef CONFIG_BALLOON_COMPACTION - -static int vmballoon_init_fs_context(struct fs_context *fc) -{ - return init_pseudo(fc, BALLOON_VMW_MAGIC) ? 0 : -ENOMEM; -} - -static struct file_system_type vmballoon_fs = { - .name = "balloon-vmware", - .init_fs_context = vmballoon_init_fs_context, - .kill_sb = kill_anon_super, -}; - -static struct vfsmount *vmballoon_mnt; - /** * vmballoon_migratepage() - migrates a balloon page. * @b_dev_info: balloon device information descriptor. @@ -1878,8 +1865,6 @@ static void vmballoon_compaction_deinit(struct vmballoon *b) iput(b->b_dev_info.inode); b->b_dev_info.inode = NULL; - kern_unmount(vmballoon_mnt); - vmballoon_mnt = NULL; } /** @@ -1895,13 +1880,8 @@ static void vmballoon_compaction_deinit(struct vmballoon *b) */ static __init int vmballoon_compaction_init(struct vmballoon *b) { - vmballoon_mnt = kern_mount(&vmballoon_fs); - if (IS_ERR(vmballoon_mnt)) - return PTR_ERR(vmballoon_mnt); - b->b_dev_info.migratepage = vmballoon_migratepage; - b->b_dev_info.inode = alloc_anon_inode_sb(vmballoon_mnt->mnt_sb); - + b->b_dev_info.inode = alloc_anon_inode(); if (IS_ERR(b->b_dev_info.inode)) return PTR_ERR(b->b_dev_info.inode);