module/os/linux/zfs/mmp_os.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 2017 by Lawrence Livermore National Security, LLC.
  23  */
  24
  25 #include <sys/zfs_context.h>
  26 #include <sys/mmp.h>
  27
  28 int
  29 param_set_multihost_interval(const char *val, zfs_kernel_param_t *kp)
  30 {
  31         int ret;
  32
  33         ret = param_set_ulong(val, kp);
  34         if (ret < 0)
  35                 return (ret);
  36
  37         if (spa_mode_global != SPA_MODE_UNINIT)
  38                 mmp_signal_all_threads();
  39
  40         return (ret);
  41 }