e0459f57b8
Add necessary #ifndef #endif blocks to avoid mulitple inclusion of same headers Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
/*
|
|
* V9FS FID Management
|
|
*
|
|
* Copyright (C) 2005 by Eric Van Hensbergen <ericvh@gmail.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will 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 to:
|
|
* Free Software Foundation
|
|
* 51 Franklin Street, Fifth Floor
|
|
* Boston, MA 02111-1301 USA
|
|
*
|
|
*/
|
|
#ifndef FS_9P_FID_H
|
|
#define FS_9P_FID_H
|
|
#include <linux/list.h>
|
|
|
|
/**
|
|
* struct v9fs_dentry - 9p private data stored in dentry d_fsdata
|
|
* @lock: protects the fidlist
|
|
* @fidlist: list of FIDs currently associated with this dentry
|
|
*
|
|
* This structure defines the 9p private data associated with
|
|
* a particular dentry. In particular, this private data is used
|
|
* to lookup which 9P FID handle should be used for a particular VFS
|
|
* operation. FID handles are associated with dentries instead of
|
|
* inodes in order to more closely map functionality to the Plan 9
|
|
* expected behavior for FID reclaimation and tracking.
|
|
*
|
|
* See Also: Mapping FIDs to Linux VFS model in
|
|
* Design and Implementation of the Linux 9P File System documentation
|
|
*/
|
|
struct v9fs_dentry {
|
|
spinlock_t lock; /* protect fidlist */
|
|
struct list_head fidlist;
|
|
};
|
|
|
|
struct p9_fid *v9fs_fid_lookup(struct dentry *dentry);
|
|
struct p9_fid *v9fs_fid_clone(struct dentry *dentry);
|
|
int v9fs_fid_add(struct dentry *dentry, struct p9_fid *fid);
|
|
struct p9_fid *v9fs_writeback_fid(struct dentry *dentry);
|
|
#endif
|