00ac6a98d8
The option "nonc" disables using of namecache for the created mount, by default namecache is used. The rationale for the option is that namecache duplicates the information which is already kept in memory by tmpfs. Since it believed that namecache scales better than tmpfs, or will scale better, do not enable the option by default. On the other hand, smaller machines may benefit from lesser namecache pressure. Discussed with: mjg Tested by: pho (as part of larger patch) Sponsored by: The FreeBSD Foundation MFC after: 2 weeks
55 lines
2.0 KiB
C
55 lines
2.0 KiB
C
/* $NetBSD: tmpfs_vnops.h,v 1.7 2005/12/03 17:34:44 christos Exp $ */
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/*-
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* Copyright (c) 2005 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Julio M. Merino Vidal, developed as part of Google's Summer of Code
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* 2005 program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _FS_TMPFS_TMPFS_VNOPS_H_
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#define _FS_TMPFS_TMPFS_VNOPS_H_
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#if !defined(_KERNEL)
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#error not supposed to be exposed to userland.
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#endif
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/*
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* Declarations for tmpfs_vnops.c.
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*/
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extern struct vop_vector tmpfs_vnodeop_entries;
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extern struct vop_vector tmpfs_vnodeop_nonc_entries;
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vop_access_t tmpfs_access;
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vop_getattr_t tmpfs_getattr;
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vop_setattr_t tmpfs_setattr;
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vop_reclaim_t tmpfs_reclaim;
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#endif /* _FS_TMPFS_TMPFS_VNOPS_H_ */
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