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authorRicardo Labiaga <Ricardo.Labiaga@netapp.com>2010-10-20 00:17:58 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2010-10-24 18:07:10 -0400
commit85e174ba6b786ad336eb2df105b4f66d0932e70a (patch)
treeeec6b01d897e85c47471f4166201676001c9fd21 /fs/nfs/pnfs.h
parent504913fbc84c00bba7224d73e4aab525c1731f7d (diff)
NFS: set layout driver
Put in the infrastructure that uses information returned from the server at mount to select a layout driver module. In this patch, a stub is used that always returns "no driver found". Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Dean Hildebrand <dhildebz@umich.edu> Signed-off-by: Marc Eshel <eshel@almaden.ibm.com> Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/pnfs.h')
-rw-r--r--fs/nfs/pnfs.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
new file mode 100644
index 000000000000..c628ef131d83
--- /dev/null
+++ b/fs/nfs/pnfs.h
@@ -0,0 +1,56 @@
1/*
2 * pNFS client data structures.
3 *
4 * Copyright (c) 2002
5 * The Regents of the University of Michigan
6 * All Rights Reserved
7 *
8 * Dean Hildebrand <dhildebz@umich.edu>
9 *
10 * Permission is granted to use, copy, create derivative works, and
11 * redistribute this software and such derivative works for any purpose,
12 * so long as the name of the University of Michigan is not used in
13 * any advertising or publicity pertaining to the use or distribution
14 * of this software without specific, written prior authorization. If
15 * the above copyright notice or any other identification of the
16 * University of Michigan is included in any copy of any portion of
17 * this software, then the disclaimer below must also be included.
18 *
19 * This software is provided as is, without representation or warranty
20 * of any kind either express or implied, including without limitation
21 * the implied warranties of merchantability, fitness for a particular
22 * purpose, or noninfringement. The Regents of the University of
23 * Michigan shall not be liable for any damages, including special,
24 * indirect, incidental, or consequential damages, with respect to any
25 * claim arising out of or in connection with the use of the software,
26 * even if it has been or is hereafter advised of the possibility of
27 * such damages.
28 */
29
30#ifndef FS_NFS_PNFS_H
31#define FS_NFS_PNFS_H
32
33#ifdef CONFIG_NFS_V4_1
34
35#define LAYOUT_NFSV4_1_MODULE_PREFIX "nfs-layouttype4"
36
37/* Per-layout driver specific registration structure */
38struct pnfs_layoutdriver_type {
39};
40
41void set_pnfs_layoutdriver(struct nfs_server *, u32 id);
42void unset_pnfs_layoutdriver(struct nfs_server *);
43
44#else /* CONFIG_NFS_V4_1 */
45
46static inline void set_pnfs_layoutdriver(struct nfs_server *s, u32 id)
47{
48}
49
50static inline void unset_pnfs_layoutdriver(struct nfs_server *s)
51{
52}
53
54#endif /* CONFIG_NFS_V4_1 */
55
56#endif /* FS_NFS_PNFS_H */