Viewing: lustre_barrier_user.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* Copyright (c) 2017, Intel Corporation.
*/
/*
* Lustre write barrier (on MDT) userspace interfaces.
*
* Author: Fan, Yong <fan.yong@intel.com>
*/
#ifndef _LUSTRE_BARRIER_USER_H
# define _LUSTRE_BARRIER_USER_H
#include <linux/types.h>
#include <linux/lustre/lustre_user.h>
#define BARRIER_VERSION_V1 1
#define BARRIER_TIMEOUT_DEFAULT 30
enum barrier_commands {
BC_FREEZE = 1,
BC_THAW = 2,
BC_STAT = 3,
BC_RESCAN = 4,
};
enum barrier_status {
BS_INIT = 0,
BS_FREEZING_P1 = 1,
BS_FREEZING_P2 = 2,
BS_FROZEN = 3,
BS_THAWING = 4,
BS_THAWED = 5,
BS_FAILED = 6,
BS_EXPIRED = 7,
BS_RESCAN = 8,
};
struct barrier_ctl {
__u32 bc_version;
__u32 bc_cmd;
union {
__s32 bc_timeout;
__u32 bc_total;
};
union {
__u32 bc_status;
__u32 bc_absence;
};
char bc_name[12];
__u32 bc_padding;
};
#endif /* _LUSTRE_BARRIER_USER_H */
