From patchwork Thu Oct 22 15:35:54 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Coddington X-Patchwork-Id: 7532141 X-Patchwork-Delegate: ericvh@gmail.com Return-Path: X-Original-To: patchwork-v9fs-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 69C599F2F7 for ; Sun, 1 Nov 2015 13:57:00 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 89D01206DF for ; Sun, 1 Nov 2015 13:56:59 +0000 (UTC) Received: from lists.sourceforge.net (lists.sourceforge.net [216.34.181.88]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 715192066B for ; Sun, 1 Nov 2015 13:56:57 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=sfs-ml-2.v29.ch3.sourceforge.com) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1Zst7v-0004dr-Ah; Sun, 01 Nov 2015 13:56:55 +0000 Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] helo=mx.sourceforge.net) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1ZpHuR-0005mW-AP; Thu, 22 Oct 2015 15:36:07 +0000 Received-SPF: pass (sog-mx-3.v43.ch3.sourceforge.com: domain of redhat.com designates 209.132.183.28 as permitted sender) client-ip=209.132.183.28; envelope-from=bcodding@redhat.com; helo=mx1.redhat.com; Received: from mx1.redhat.com ([209.132.183.28]) by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.76) id 1ZpHuQ-0002Sm-9D; Thu, 22 Oct 2015 15:36:07 +0000 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (Postfix) with ESMTPS id 40923C0A514A; Thu, 22 Oct 2015 15:35:59 +0000 (UTC) Received: from bcodding-csb.redhat.com (vpn-49-46.rdu2.redhat.com [10.10.49.46]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id t9MFZvuc012060; Thu, 22 Oct 2015 11:35:57 -0400 Received: by bcodding-csb.redhat.com (Postfix, from userid 24008) id AEE6FE3AD6; Thu, 22 Oct 2015 11:35:56 -0400 (EDT) From: Benjamin Coddington To: Jeff Layton , "J. Bruce Fields" , Alexander Viro Date: Thu, 22 Oct 2015 11:35:54 -0400 Message-Id: In-Reply-To: References: In-Reply-To: References: X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-Spam-Score: -1.5 (-) X-Headers-End: 1ZpHuQ-0002Sm-9D X-Mailman-Approved-At: Sun, 01 Nov 2015 13:56:53 +0000 Cc: Latchesar Ionkov , Trond Myklebust , Julia Lawall , aybuke ozdemir , devel@driverdev.osuosl.org, Yan Zheng , cluster-devel@redhat.com, Sage Weil , Miklos Szeredi , Christoph Hellwig , fuse-devel@lists.sourceforge.net, Christine Caulfield , v9fs-developer@lists.sourceforge.net, Ilya Dryomov , linux-cifs@vger.kernel.org, Eric Van Hensbergen , Mark Fasheh , Oleg Drokin , linux-fsdevel@vger.kernel.org, David Teigland , Joel Becker , ceph-devel@vger.kernel.org, Abdul Hussain , Steven Whitehouse , linux-nfs@vger.kernel.org, Andreas Dilger , Greg Kroah-Hartman , samba-technical@lists.samba.org, linux-kernel@vger.kernel.org, Steve French , Bob Peterson , Ron Minnich , Anna Schumaker , ocfs2-devel@oss.oracle.com, lustre-devel@lists.lustre.org Subject: [V9fs-developer] [PATCH 1/3] locks: introduce locks_lock_inode_wait() X-BeenThere: v9fs-developer@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: v9fs-developer-bounces@lists.sourceforge.net X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Users of the locks API commonly call either posix_lock_file_wait() or flock_lock_file_wait() depending upon the lock type. Add a new function locks_lock_inode_wait() which will check and call the correct function for the type of lock passed in. Signed-off-by: Benjamin Coddington --- fs/locks.c | 24 ++++++++++++++++++++++++ include/linux/fs.h | 11 +++++++++++ 2 files changed, 35 insertions(+), 0 deletions(-) diff --git a/fs/locks.c b/fs/locks.c index 2a54c80..68b1784 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -1876,6 +1876,30 @@ int flock_lock_inode_wait(struct inode *inode, struct file_lock *fl) EXPORT_SYMBOL(flock_lock_inode_wait); /** + * locks_lock_inode_wait - Apply a lock to an inode + * @inode: inode of the file to apply to + * @fl: The lock to be applied + * + * Apply a POSIX or FLOCK style lock request to an inode. + */ +int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl) +{ + int res = 0; + switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { + case FL_POSIX: + res = posix_lock_inode_wait(inode, fl); + break; + case FL_FLOCK: + res = flock_lock_inode_wait(inode, fl); + break; + default: + BUG(); + } + return res; +} +EXPORT_SYMBOL(locks_lock_inode_wait); + +/** * sys_flock: - flock() system call. * @fd: the file descriptor to lock. * @cmd: the type of lock to apply. diff --git a/include/linux/fs.h b/include/linux/fs.h index 72d8a84..2e283b7 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1059,6 +1059,7 @@ extern int vfs_test_lock(struct file *, struct file_lock *); extern int vfs_lock_file(struct file *, unsigned int, struct file_lock *, struct file_lock *); extern int vfs_cancel_lock(struct file *filp, struct file_lock *fl); extern int flock_lock_inode_wait(struct inode *inode, struct file_lock *fl); +extern int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl); extern int __break_lease(struct inode *inode, unsigned int flags, unsigned int type); extern void lease_get_mtime(struct inode *, struct timespec *time); extern int generic_setlease(struct file *, long, struct file_lock **, void **priv); @@ -1177,6 +1178,11 @@ static inline int flock_lock_inode_wait(struct inode *inode, return -ENOLCK; } +static inline int locks_lock_file_wait(struct file *filp, struct file_lock *fl) +{ + return -ENOLCK; +} + static inline int __break_lease(struct inode *inode, unsigned int mode, unsigned int type) { return 0; @@ -1225,6 +1231,11 @@ static inline int flock_lock_file_wait(struct file *filp, struct file_lock *fl) return flock_lock_inode_wait(file_inode(filp), fl); } +static inline int locks_lock_file_wait(struct file *filp, struct file_lock *fl) +{ + return locks_lock_inode_wait(file_inode(filp), fl); +} + struct fasync_struct { spinlock_t fa_lock; int magic;