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