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Remove mutex_lock_nested() wrapper

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The mutex_lock_nested() function has been available since Linux 2.6.18.
There is no longer a need to maintain this compatibility code.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf 2014-10-01 17:31:53 -04:00
parent 2bc5666f53
commit b652d169b0
4 changed files with 0 additions and 62 deletions
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24
config/spl-build.m4
View File

@ -29,7 +29,6 @@ AC_DEFUN([SPL_AC_CONFIG_KERNEL], [
SPL_AC_PDE_DATA
SPL_AC_MUTEX_OWNER
SPL_AC_MUTEX_OWNER_TASK_STRUCT
SPL_AC_MUTEX_LOCK_NESTED
SPL_AC_3ARGS_ON_EACH_CPU
SPL_AC_KALLSYMS_LOOKUP_NAME
SPL_AC_GET_VMALLOC_INFO
@ -973,29 +972,6 @@ AC_DEFUN([SPL_AC_MUTEX_OWNER_TASK_STRUCT], [
EXTRA_KCFLAGS="$tmp_flags"
])
dnl #
dnl # 2.6.18 API change,
dnl # First introduced 'mutex_lock_nested()' in include/linux/mutex.h,
dnl # as part of the mutex validator. Fallback to using 'mutex_lock()'
dnl # if the mutex validator is disabled or otherwise unavailable.
dnl #
AC_DEFUN([SPL_AC_MUTEX_LOCK_NESTED], [
AC_MSG_CHECKING([whether mutex_lock_nested() is available])
SPL_LINUX_TRY_COMPILE([
#include <linux/mutex.h>
],[
struct mutex mutex;
mutex_init(&mutex);
mutex_lock_nested(&mutex, 0);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_MUTEX_LOCK_NESTED, 1,
[mutex_lock_nested() is available])
],[
AC_MSG_RESULT(no)
])
])
dnl #
dnl # 2.6.27 API change,
dnl # on_each_cpu() uses 3 args, no 'retry' argument

1
include/linux/Makefile.am
View File

@ -10,7 +10,6 @@ KERNEL_H = \
$(top_srcdir)/include/linux/math64_compat.h \
$(top_srcdir)/include/linux/mm_compat.h \
$(top_srcdir)/include/linux/module_compat.h \
$(top_srcdir)/include/linux/mutex_compat.h \
$(top_srcdir)/include/linux/proc_compat.h \
$(top_srcdir)/include/linux/rwsem_compat.h \
$(top_srcdir)/include/linux/smp_compat.h \

36
include/linux/mutex_compat.h
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@ -1,36 +0,0 @@
/*****************************************************************************\
* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
* Copyright (C) 2007 The Regents of the University of California.
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
* UCRL-CODE-235197
*
* This file is part of the SPL, Solaris Porting Layer.
* For details, see <http://zfsonlinux.org/>.
*
* The SPL 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.
*
* The SPL 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 the SPL. If not, see <http://www.gnu.org/licenses/>.
\*****************************************************************************/
#ifndef _SPL_MUTEX_COMPAT_H
#define _SPL_MUTEX_COMPAT_H
#include <linux/mutex.h>
/* mutex_lock_nested() introduced in 2.6.18 */
#ifndef HAVE_MUTEX_LOCK_NESTED
# define mutex_lock_nested(lock, subclass) mutex_lock(lock)
#endif /* HAVE_MUTEX_LOCK_NESTED */
#endif /* _SPL_MUTEX_COMPAT_H */

1
include/sys/types.h
View File

@ -33,7 +33,6 @@
#include <linux/bitops_compat.h>
#include <linux/smp_compat.h>
#include <linux/kallsyms_compat.h>
#include <linux/mutex_compat.h>
#include <linux/module_compat.h>
#include <linux/sysctl_compat.h>
#include <linux/proc_compat.h>