From patchwork Thu Nov 24 10:55:39 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miklos Szeredi X-Patchwork-Id: 9445189 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 97E026075F for ; Thu, 24 Nov 2016 11:01:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9C0FB1FF1E for ; Thu, 24 Nov 2016 11:01:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9083627C2D; Thu, 24 Nov 2016 11:01:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 86D691FF1E for ; Thu, 24 Nov 2016 11:01:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S938655AbcKXLBa (ORCPT ); Thu, 24 Nov 2016 06:01:30 -0500 Received: from mail-wj0-f182.google.com ([209.85.210.182]:36667 "EHLO mail-wj0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935768AbcKXLB3 (ORCPT ); Thu, 24 Nov 2016 06:01:29 -0500 X-Greylist: delayed 341 seconds by postgrey-1.27 at vger.kernel.org; Thu, 24 Nov 2016 06:01:29 EST Received: by mail-wj0-f182.google.com with SMTP id qp4so30562443wjc.3 for ; Thu, 24 Nov 2016 03:01:29 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=698Xu9O4pxSavXhLxr6MIoRWsMa2ZtuYRb67Dg4ayQ4=; b=fRXlw6lDiz4Uz/cPamgfL0BGPHKkpeKQXotYs48VuMQRlOIOfgBmbCGZWPfj+E3psL t0ZFnS259HP7VsHICUT4ULVrbfxN/pZsdFOkRthVdlixlSNdZhdOOk9SbnkAjvn5XeI3 XVTG7b1jXHZCBsrCHy/DblkdDBhuyJsfb7Mb34TPY5/Qm/+Myr6Q6jFpEJu83c2UKPnj ERjOWHUp0LjcQjZnJYjpkDGD4VHJBHqZKPG+w8hBmjGK5VivOv12MHIdVB7M4YvK6Zf9 Xc2VgiuT/3EJYfTRTEE94W0plNREgUiFzRtCNvnripzKQJmLaqDQ4zQ5Akddqq43IzUX NdrQ== X-Gm-Message-State: AKaTC00iLoYrcyqDY6GTRyk8M/xZF6njKhCXnHeeRz5G9KInyKU5iRSql4HpORzRZZlMsg1e X-Received: by 10.194.87.230 with SMTP id bb6mr1890297wjb.163.1479984950890; Thu, 24 Nov 2016 02:55:50 -0800 (PST) Received: from veci.piliscsaba.szeredi.hu (pool-dsl-2c-0018.externet.hu. [217.173.44.24]) by smtp.gmail.com with ESMTPSA id g73sm7587416wme.16.2016.11.24.02.55.49 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 24 Nov 2016 02:55:50 -0800 (PST) From: Miklos Szeredi To: linux-unionfs@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/7] vfs: export filp_clone_open() Date: Thu, 24 Nov 2016 11:55:39 +0100 Message-Id: <1479984944-1017-4-git-send-email-mszeredi@redhat.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1479984944-1017-1-git-send-email-mszeredi@redhat.com> References: <1479984944-1017-1-git-send-email-mszeredi@redhat.com> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Already exported to modules, just needs to move declaration from "fs/internal.h" to . This will be used by overlayfs to clone a read-only file that has been copied up after being opened. The clone will refer to the copied-up uppper file instead of the original, lower file. Signed-off-by: Miklos Szeredi --- fs/internal.h | 1 - include/linux/fs.h | 1 + 2 files changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/internal.h b/fs/internal.h index f4da3341b4a3..361ba1c12698 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -112,7 +112,6 @@ extern long do_handle_open(int mountdirfd, struct file_handle __user *ufh, int open_flag); extern int open_check_o_direct(struct file *f); extern int vfs_open(const struct path *, struct file *, const struct cred *); -extern struct file *filp_clone_open(struct file *); /* * inode.c diff --git a/include/linux/fs.h b/include/linux/fs.h index 87a32f999812..e3bc970214e1 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2355,6 +2355,7 @@ extern struct file *filp_open(const char *, int, umode_t); extern struct file *file_open_root(struct dentry *, struct vfsmount *, const char *, int, umode_t); extern struct file * dentry_open(const struct path *, int, const struct cred *); +extern struct file *filp_clone_open(struct file *); extern int filp_close(struct file *, fl_owner_t id); extern struct filename *getname_flags(const char __user *, int, int *);