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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 021110 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 84 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190524100844.756442981@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* userdlm.h
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*
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* Userspace dlm defines
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*
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* Copyright (C) 2002, 2004 Oracle. All rights reserved.
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*/
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#ifndef USERDLM_H
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#define USERDLM_H
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#include <linux/module.h>
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#include <linux/fs.h>
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#include <linux/types.h>
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#include <linux/workqueue.h>
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/* user_lock_res->l_flags flags. */
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#define USER_LOCK_ATTACHED (0x00000001) /* we have initialized
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* the lvb */
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#define USER_LOCK_BUSY (0x00000002) /* we are currently in
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* dlm_lock */
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#define USER_LOCK_BLOCKED (0x00000004) /* blocked waiting to
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* downconvert*/
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#define USER_LOCK_IN_TEARDOWN (0x00000008) /* we're currently
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* destroying this
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* lock. */
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#define USER_LOCK_QUEUED (0x00000010) /* lock is on the
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* workqueue */
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#define USER_LOCK_IN_CANCEL (0x00000020)
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struct user_lock_res {
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spinlock_t l_lock;
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int l_flags;
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#define USER_DLM_LOCK_ID_MAX_LEN 32
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char l_name[USER_DLM_LOCK_ID_MAX_LEN];
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int l_namelen;
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int l_level;
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unsigned int l_ro_holders;
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unsigned int l_ex_holders;
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struct ocfs2_dlm_lksb l_lksb;
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int l_requested;
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int l_blocking;
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wait_queue_head_t l_event;
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struct work_struct l_work;
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};
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extern struct workqueue_struct *user_dlm_worker;
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void user_dlm_lock_res_init(struct user_lock_res *lockres,
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struct dentry *dentry);
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int user_dlm_destroy_lock(struct user_lock_res *lockres);
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int user_dlm_cluster_lock(struct user_lock_res *lockres,
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int level,
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int lkm_flags);
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void user_dlm_cluster_unlock(struct user_lock_res *lockres,
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int level);
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void user_dlm_write_lvb(struct inode *inode,
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const char *val,
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unsigned int len);
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ssize_t user_dlm_read_lvb(struct inode *inode,
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char *val,
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unsigned int len);
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struct ocfs2_cluster_connection *user_dlm_register(const struct qstr *name);
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void user_dlm_unregister(struct ocfs2_cluster_connection *conn);
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void user_dlm_set_locking_protocol(void);
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struct dlmfs_inode_private {
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struct ocfs2_cluster_connection *ip_conn;
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struct user_lock_res ip_lockres; /* unused for directories. */
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struct inode *ip_parent;
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struct inode ip_vfs_inode;
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};
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static inline struct dlmfs_inode_private *
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DLMFS_I(struct inode *inode)
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{
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return container_of(inode,
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struct dlmfs_inode_private,
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ip_vfs_inode);
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}
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struct dlmfs_filp_private {
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int fp_lock_level;
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};
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#define DLMFS_MAGIC 0x76a9f425
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#endif /* USERDLM_H */
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