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3d6af2dd6d
Update links to refer to the official ZFS on Linux website instead of @behlendorf's personal fork on github. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
47 lines
1.8 KiB
C
47 lines
1.8 KiB
C
/*****************************************************************************\
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* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
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* Copyright (C) 2007 The Regents of the University of California.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* UCRL-CODE-235197
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*
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* This file is part of the SPL, Solaris Porting Layer.
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* For details, see <http://zfsonlinux.org/>.
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*
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* The SPL is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The SPL is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with the SPL. If not, see <http://www.gnu.org/licenses/>.
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\*****************************************************************************/
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#ifndef _SPL_DNLC_H
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#define _SPL_DNLC_H
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/*
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* Reduce the dcache and icache then reap the free'd slabs. Note the
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* interface takes a reclaim percentage but we don't have easy access to
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* the total number of entries to calculate the reclaim count. However,
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* in practice this doesn't need to be even close to correct. We simply
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* need to reclaim some useful fraction of the cache. The caller can
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* determine if more needs to be done.
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*/
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static inline void
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dnlc_reduce_cache(void *reduce_percent)
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{
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int nr = (uintptr_t)reduce_percent * 10000;
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shrink_dcache_memory(nr, GFP_KERNEL);
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shrink_icache_memory(nr, GFP_KERNEL);
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kmem_reap();
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}
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#endif /* SPL_DNLC_H */
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