64 строки
1.9 KiB
C
64 строки
1.9 KiB
C
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/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_VNODE_H__
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#define __XFS_VNODE_H__
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#include "xfs_fs.h"
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struct file;
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struct xfs_inode;
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struct attrlist_cursor_kern;
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/*
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* Return values for xfs_inactive. A return value of
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* VN_INACTIVE_NOCACHE implies that the file system behavior
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* has disassociated its state and bhv_desc_t from the vnode.
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*/
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#define VN_INACTIVE_CACHE 0
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#define VN_INACTIVE_NOCACHE 1
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/*
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* Flags for read/write calls - same values as IRIX
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*/
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#define IO_ISDIRECT 0x00004 /* bypass page cache */
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#define IO_INVIS 0x00020 /* don't update inode timestamps */
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#define XFS_IO_FLAGS \
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{ IO_ISDIRECT, "DIRECT" }, \
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{ IO_INVIS, "INVIS"}
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/*
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* Flush/Invalidate options for vop_toss/flush/flushinval_pages.
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*/
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#define FI_NONE 0 /* none */
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#define FI_REMAPF 1 /* Do a remapf prior to the operation */
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#define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation.
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Prevent VM access to the pages until
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the operation completes. */
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/*
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* Some useful predicates.
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*/
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#define VN_MAPPED(vp) mapping_mapped(vp->i_mapping)
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#define VN_CACHED(vp) (vp->i_mapping->nrpages)
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#define VN_DIRTY(vp) mapping_tagged(vp->i_mapping, \
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PAGECACHE_TAG_DIRTY)
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#endif /* __XFS_VNODE_H__ */
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