| 1 | /* |
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| 2 | * linux/include/linux/nfs_fs.h |
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| 3 | * |
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| 4 | * Copyright (C) 1992 Rick Sladkey |
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| 5 | * |
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| 6 | * OS-specific nfs filesystem definitions and declarations |
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| 7 | */ |
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| 8 | |
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| 9 | #ifndef _LINUX_NFS_FS_H |
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| 10 | #define _LINUX_NFS_FS_H |
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| 11 | |
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| 12 | #include <linux/in.h> |
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| 13 | #include <linux/wait.h> |
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| 14 | #include <linux/uio.h> |
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| 15 | |
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| 16 | #include <linux/nfs_fs_sb.h> |
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| 17 | |
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| 18 | #include <linux/sunrpc/debug.h> |
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| 19 | #include <linux/sunrpc/clnt.h> |
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| 20 | |
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| 21 | #include <linux/nfs.h> |
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| 22 | #include <linux/nfs2.h> |
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| 23 | #include <linux/nfs3.h> |
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| 24 | #include <linux/nfs4.h> |
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| 25 | #include <linux/nfs_xdr.h> |
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| 26 | |
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| 27 | /* |
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| 28 | * Enable debugging support for nfs client. |
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| 29 | * Requires RPC_DEBUG. |
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| 30 | */ |
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| 31 | #ifdef RPC_DEBUG |
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| 32 | # define NFS_DEBUG |
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| 33 | #endif |
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| 34 | |
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| 35 | #define NFS_MAX_FILE_IO_BUFFER_SIZE 32768 |
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| 36 | #define NFS_DEF_FILE_IO_BUFFER_SIZE 4096 |
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| 37 | |
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| 38 | /* |
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| 39 | * The upper limit on timeouts for the exponential backoff algorithm. |
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| 40 | */ |
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| 41 | #define NFS_WRITEBACK_DELAY (5*HZ) |
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| 42 | #define NFS_WRITEBACK_LOCKDELAY (60*HZ) |
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| 43 | #define NFS_COMMIT_DELAY (5*HZ) |
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| 44 | |
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| 45 | /* |
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| 46 | * superblock magic number for NFS |
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| 47 | */ |
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| 48 | #define NFS_SUPER_MAGIC 0x6969 |
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| 49 | |
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| 50 | /* |
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| 51 | * These are the default flags for swap requests |
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| 52 | */ |
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| 53 | #define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS) |
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| 54 | |
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| 55 | #define NFS_RW_SYNC 0x0001 /* O_SYNC handling */ |
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| 56 | #define NFS_RW_SWAP 0x0002 /* This is a swap request */ |
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| 57 | |
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| 58 | /* |
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| 59 | * When flushing a cluster of dirty pages, there can be different |
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| 60 | * strategies: |
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| 61 | */ |
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| 62 | #define FLUSH_AGING 0 /* only flush old buffers */ |
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| 63 | #define FLUSH_SYNC 1 /* file being synced, or contention */ |
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| 64 | #define FLUSH_WAIT 2 /* wait for completion */ |
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| 65 | #define FLUSH_STABLE 4 /* commit to stable storage */ |
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| 66 | #define FLUSH_LOWPRI 8 /* low priority background flush */ |
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| 67 | #define FLUSH_HIGHPRI 16 /* high priority memory reclaim flush */ |
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| 68 | |
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| 69 | |
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| 70 | /* |
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| 71 | * NFS debug flags |
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| 72 | */ |
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| 73 | #define NFSDBG_VFS 0x0001 |
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| 74 | #define NFSDBG_DIRCACHE 0x0002 |
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| 75 | #define NFSDBG_LOOKUPCACHE 0x0004 |
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| 76 | #define NFSDBG_PAGECACHE 0x0008 |
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| 77 | #define NFSDBG_PROC 0x0010 |
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| 78 | #define NFSDBG_XDR 0x0020 |
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| 79 | #define NFSDBG_FILE 0x0040 |
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| 80 | #define NFSDBG_ROOT 0x0080 |
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| 81 | #define NFSDBG_CALLBACK 0x0100 |
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| 82 | #define NFSDBG_ALL 0xFFFF |
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| 83 | |
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| 84 | #endif |
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