/usr/include/libzfs/sys/zfs_delay.h is in libzfslinux-dev 0.6.5.6-0ubuntu8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | /*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
#ifndef _SYS_FS_ZFS_DELAY_H
#define _SYS_FS_ZFS_DELAY_H
#include <linux/delay_compat.h>
/*
* Generic wrapper to sleep until a given time.
*/
#define zfs_sleep_until(wakeup) \
do { \
hrtime_t delta = wakeup - gethrtime(); \
\
if (delta > 0) { \
unsigned long delta_us; \
delta_us = delta / (NANOSEC / MICROSEC); \
usleep_range(delta_us, delta_us + 100); \
} \
} while (0)
#endif /* _SYS_FS_ZFS_DELAY_H */
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