| 1 | /* |
| 2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 17 | */ |
| 18 | #ifndef __XFS_VNODE_H__ |
| 19 | #define __XFS_VNODE_H__ |
| 20 | |
| 21 | #include "xfs_fs.h" |
| 22 | |
| 23 | struct file; |
| 24 | struct xfs_inode; |
| 25 | struct attrlist_cursor_kern; |
| 26 | |
| 27 | /* |
| 28 | * Return values for xfs_inactive. A return value of |
| 29 | * VN_INACTIVE_NOCACHE implies that the file system behavior |
| 30 | * has disassociated its state and bhv_desc_t from the vnode. |
| 31 | */ |
| 32 | #define VN_INACTIVE_CACHE 0 |
| 33 | #define VN_INACTIVE_NOCACHE 1 |
| 34 | |
| 35 | /* |
| 36 | * Flags for read/write calls - same values as IRIX |
| 37 | */ |
| 38 | #define IO_ISDIRECT 0x00004 /* bypass page cache */ |
| 39 | #define IO_INVIS 0x00020 /* don't update inode timestamps */ |
| 40 | |
| 41 | #define XFS_IO_FLAGS \ |
| 42 | { IO_ISDIRECT, "DIRECT" }, \ |
| 43 | { IO_INVIS, "INVIS"} |
| 44 | |
| 45 | /* |
| 46 | * Flush/Invalidate options for vop_toss/flush/flushinval_pages. |
| 47 | */ |
| 48 | #define FI_NONE 0 /* none */ |
| 49 | #define FI_REMAPF 1 /* Do a remapf prior to the operation */ |
| 50 | #define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation. |
| 51 | Prevent VM access to the pages until |
| 52 | the operation completes. */ |
| 53 | |
| 54 | /* |
| 55 | * Some useful predicates. |
| 56 | */ |
| 57 | #define VN_MAPPED(vp) mapping_mapped(vp->i_mapping) |
| 58 | #define VN_CACHED(vp) (vp->i_mapping->nrpages) |
| 59 | #define VN_DIRTY(vp) mapping_tagged(vp->i_mapping, \ |
| 60 | PAGECACHE_TAG_DIRTY) |
| 61 | |
| 62 | |
| 63 | #endif /* __XFS_VNODE_H__ */ |