Prepare SPL repo to merge with ZFS repo

[mirror_spl.git] / include / linux / rwsem_compat.h

diff --git a/include/linux/rwsem_compat.h b/include/linux/rwsem_compat.h
deleted file mode 100644 (file)
index 7a0dcf8..0000000
--- a/include/linux/rwsem_compat.h
+++ /dev/null
@@ -1,68 +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_RWSEM_COMPAT_H
-#define        _SPL_RWSEM_COMPAT_H
-
-#include <linux/rwsem.h>
-
-#if defined(CONFIG_PREEMPT_RT_FULL)
-#define        SPL_RWSEM_SINGLE_READER_VALUE   (1)
-#define        SPL_RWSEM_SINGLE_WRITER_VALUE   (0)
-#elif defined(CONFIG_RWSEM_GENERIC_SPINLOCK)
-#define        SPL_RWSEM_SINGLE_READER_VALUE   (1)
-#define        SPL_RWSEM_SINGLE_WRITER_VALUE   (-1)
-#else
-#define        SPL_RWSEM_SINGLE_READER_VALUE   (RWSEM_ACTIVE_READ_BIAS)
-#define        SPL_RWSEM_SINGLE_WRITER_VALUE   (RWSEM_ACTIVE_WRITE_BIAS)
-#endif
-
-/* Linux 3.16 changed activity to count for rwsem-spinlock */
-#if defined(CONFIG_PREEMPT_RT_FULL)
-#define        RWSEM_COUNT(sem)        sem->read_depth
-#elif defined(HAVE_RWSEM_ACTIVITY)
-#define        RWSEM_COUNT(sem)        sem->activity
-/* Linux 4.8 changed count to an atomic_long_t for !rwsem-spinlock */
-#elif defined(HAVE_RWSEM_ATOMIC_LONG_COUNT)
-#define        RWSEM_COUNT(sem)        atomic_long_read(&(sem)->count)
-#else
-#define        RWSEM_COUNT(sem)        sem->count
-#endif
-
-int rwsem_tryupgrade(struct rw_semaphore *rwsem);
-
-#if defined(RWSEM_SPINLOCK_IS_RAW)
-#define        spl_rwsem_lock_irqsave(lk, fl)          raw_spin_lock_irqsave(lk, fl)
-#define        spl_rwsem_unlock_irqrestore(lk, fl)     \
-    raw_spin_unlock_irqrestore(lk, fl)
-#define        spl_rwsem_trylock_irqsave(lk, fl)       raw_spin_trylock_irqsave(lk, fl)
-#else
-#define        spl_rwsem_lock_irqsave(lk, fl)          spin_lock_irqsave(lk, fl)
-#define        spl_rwsem_unlock_irqrestore(lk, fl)     spin_unlock_irqrestore(lk, fl)
-#define        spl_rwsem_trylock_irqsave(lk, fl)       spin_trylock_irqsave(lk, fl)
-#endif /* RWSEM_SPINLOCK_IS_RAW */
-
-#define        spl_rwsem_is_locked(rwsem)              rwsem_is_locked(rwsem)
-
-#endif /* _SPL_RWSEM_COMPAT_H */