1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /*
3  *  linux/include/linux/nfs_fs.h
4  *
5  *  Copyright (C) 1992  Rick Sladkey
6  *
7  *  OS-specific nfs filesystem definitions and declarations
8  */
9 
10 #ifndef _UAPI_LINUX_NFS_FS_H
11 #define _UAPI_LINUX_NFS_FS_H
12 
13 #include <linux/magic.h>
14 
15 /* Default timeout values */
16 #define NFS_DEF_UDP_TIMEO	(11)
17 #define NFS_DEF_UDP_RETRANS	(3)
18 #define NFS_DEF_TCP_TIMEO	(600)
19 #define NFS_DEF_TCP_RETRANS	(2)
20 
21 #define NFS_MAX_UDP_TIMEOUT	(60*HZ)
22 #define NFS_MAX_TCP_TIMEOUT	(600*HZ)
23 
24 #define NFS_DEF_ACREGMIN	(3)
25 #define NFS_DEF_ACREGMAX	(60)
26 #define NFS_DEF_ACDIRMIN	(30)
27 #define NFS_DEF_ACDIRMAX	(60)
28 
29 /*
30  * When flushing a cluster of dirty pages, there can be different
31  * strategies:
32  */
33 #define FLUSH_SYNC		1	/* file being synced, or contention */
34 #define FLUSH_STABLE		4	/* commit to stable storage */
35 #define FLUSH_LOWPRI		8	/* low priority background flush */
36 #define FLUSH_HIGHPRI		16	/* high priority memory reclaim flush */
37 #define FLUSH_COND_STABLE	32	/* conditional stable write - only stable
38 					 * if everything fits in one RPC */
39 
40 
41 /*
42  * NFS debug flags
43  */
44 #define NFSDBG_VFS		0x0001
45 #define NFSDBG_DIRCACHE		0x0002
46 #define NFSDBG_LOOKUPCACHE	0x0004
47 #define NFSDBG_PAGECACHE	0x0008
48 #define NFSDBG_PROC		0x0010
49 #define NFSDBG_XDR		0x0020
50 #define NFSDBG_FILE		0x0040
51 #define NFSDBG_ROOT		0x0080
52 #define NFSDBG_CALLBACK		0x0100
53 #define NFSDBG_CLIENT		0x0200
54 #define NFSDBG_MOUNT		0x0400
55 #define NFSDBG_FSCACHE		0x0800 /* unused */
56 #define NFSDBG_PNFS		0x1000
57 #define NFSDBG_PNFS_LD		0x2000
58 #define NFSDBG_STATE		0x4000
59 #define NFSDBG_XATTRCACHE	0x8000
60 #define NFSDBG_ALL		0xFFFF
61 
62 
63 #endif /* _UAPI_LINUX_NFS_FS_H */
64