diff options
Diffstat (limited to 'fs/xfs/xfs_vnode.h')
-rw-r--r-- | fs/xfs/xfs_vnode.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/fs/xfs/xfs_vnode.h b/fs/xfs/xfs_vnode.h new file mode 100644 index 0000000..7c220b4 --- /dev/null +++ b/fs/xfs/xfs_vnode.h @@ -0,0 +1,64 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program 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. + * + * This program is distributed in the hope that it would 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 this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_VNODE_H__ +#define __XFS_VNODE_H__ + +#include "xfs_fs.h" + +struct file; +struct xfs_inode; +struct xfs_iomap; +struct attrlist_cursor_kern; + +/* + * Return values for xfs_inactive. A return value of + * VN_INACTIVE_NOCACHE implies that the file system behavior + * has disassociated its state and bhv_desc_t from the vnode. + */ +#define VN_INACTIVE_CACHE 0 +#define VN_INACTIVE_NOCACHE 1 + +/* + * Flags for read/write calls - same values as IRIX + */ +#define IO_ISDIRECT 0x00004 /* bypass page cache */ +#define IO_INVIS 0x00020 /* don't update inode timestamps */ + +#define XFS_IO_FLAGS \ + { IO_ISDIRECT, "DIRECT" }, \ + { IO_INVIS, "INVIS"} + +/* + * Flush/Invalidate options for vop_toss/flush/flushinval_pages. + */ +#define FI_NONE 0 /* none */ +#define FI_REMAPF 1 /* Do a remapf prior to the operation */ +#define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation. + Prevent VM access to the pages until + the operation completes. */ + +/* + * Some useful predicates. + */ +#define VN_MAPPED(vp) mapping_mapped(vp->i_mapping) +#define VN_CACHED(vp) (vp->i_mapping->nrpages) +#define VN_DIRTY(vp) mapping_tagged(vp->i_mapping, \ + PAGECACHE_TAG_DIRTY) + + +#endif /* __XFS_VNODE_H__ */ |