#include "afs/afs_consts.h"
#endif
+/* jhash.h is a standalone header and is fine to pull into kernel code. */
+#include <opr/jhash.h>
+
/*
* afs_fsfragsize cannot be less than 1023, or some cache-tracking
* calculations will be incorrect (since we track cache usage in kb).
/* Upper bound on number of iovecs out uio routines will deal with. */
#define AFS_MAXIOVCNT 16
-
-extern int afs_shuttingdown;
+enum afs_shutdown_state {
+ AFS_RUNNING = 0,
+ AFS_FLUSHING_CB = 1,
+ AFS_SHUTDOWN = 2,
+};
+extern enum afs_shutdown_state afs_shuttingdown;
/*
* Macros to uniquely identify the AFS vfs struct
#define NSERVERS 16 /* hash table size for server table */
#define NVOLS 64 /* hash table size for volume table */
#define NFENTRIES 256 /* hash table size for disk volume table */
-#define VCSIZE 1024 /* stat cache hash table size */
-#define DCSIZE 512 /* disk cache hash table size */
+#define VCSIZEBITS 16 /* log of stat cache hash table size */
+#define VCSIZE (opr_jhash_size(VCSIZEBITS))
#define CBRSIZE 512 /* call back returns hash table size */
#define PIGGYSIZE 1350 /* max piggyback size */
#define MAXVOLS 128 /* max vols we can store */
#define MAXSYSNAME 128 /* max sysname (i.e. @sys) size */
#define MAXNUMSYSNAMES 32 /* max that current constants allow */
+#define MAXROOTVOLNAMELEN 64 /* max length of root volume name */
#define NOTOKTIMEOUT (2*3600) /* time after which to timeout conns sans tokens */
#define NOPAG 0xffffffff
#define AFS_MAXCBRSCALL 32 /* max to return in a given call (must be <= AFSCBMAX) */
-#define AFS_SALLOC_LOW_WATER 250 /* Min free blocks before allocating more */
-#define AFS_LRALLOCSIZ 4096 /* "Large" allocated size */
#define VCACHE_FREE 5
#define AFS_NRXPACKETS 80
#define AFS_RXDEADTIME 50
afs_int32 roVol;
afs_int32 backVol;
afs_int32 rwVol; /* For r/o vols, original read/write volume. */
- afs_int32 accessTime; /* last time we used it */
+ afs_int32 setupTime; /* time volume was setup from vldb info */
afs_int32 vtix; /* volume table index */
afs_int32 copyDate; /* copyDate field, for tracking vol releases */
afs_int32 expireTime; /* for per-volume callbacks... */
#define CBulkStat 0x00020000 /* loaded by a bulk stat, and not ref'd since */
#define CUnlinkedDel 0x00040000
#define CVFlushed 0x00080000
-#ifdef AFS_LINUX22_ENV
-#define CPageWrite 0x00200000 /* to detect vm deadlock - linux */
-#elif defined(AFS_SGI_ENV)
+#if defined(AFS_SGI_ENV)
#define CWritingUFS 0x00200000 /* to detect vm deadlock - used by sgi */
#elif defined(AFS_DARWIN80_ENV)
#define CEvent 0x00200000 /* to preclude deadlock when sending events */
struct afs_vnuniq oldParent;
};
+/* Values for 'mvstat' in struct vcache */
+#define AFS_MVSTAT_FILE (0x0) /* regular file or directory */
+#define AFS_MVSTAT_MTPT (0x1) /* mountpoint */
+#define AFS_MVSTAT_ROOT (0x2) /* volume root dir */
+
#ifdef AFS_SUN5_ENV
/*
* This is for the multiPage field in struct vcache. Each one of these
krwlock_t rwlock;
struct cred *credp;
#endif
-#ifdef AFS_BOZONLOCK_ENV
- afs_bozoLock_t pvnLock; /* see locks.x */
-#endif
#ifdef AFS_AIX32_ENV
afs_lock_t pvmlock;
vmhandle_t vmh;
#endif
#endif
- struct VenusFid *mvid; /* Either parent dir (if root) or root (if mt pt) */
+ union {
+ char *silly_name; /* For sillyrenamed regular files, the silly
+ * name the file was renamed to. */
+ struct VenusFid *target_root; /* For mountpoints, the fid of the root dir
+ * in the target volume. */
+ struct VenusFid *parent; /* For root dir vcaches, the fid of the
+ * parent dir. */
+ } mvid;
+
char *linkData; /* Link data if a symlink. */
afs_hyper_t flushDV; /* data version last flushed from text */
afs_hyper_t mapDV; /* data version last flushed from map */
short execsOrWriters; /* The number of execs (if < 0) or writers (if > 0) of
* this file. */
short flockCount; /* count of flock readers, or -1 if writer */
- char mvstat; /* 0->normal, 1->mt pt, 2->root. */
+ char mvstat; /* see the AFS_MVSTAT_* constants */
char cachingStates; /* Caching policies for this file */
afs_uint32 cachingTransitions; /* # of times file has flopped between caching and not */
void *vpacRock; /* used to read or write in visible partitions */
#endif
afs_uint32 lastBRLWarnTime; /* last time we warned about byte-range locks */
+#ifdef AFS_LINUX26_ENV
+ spinlock_t pagewriter_lock;
+ struct list_head pagewriters; /* threads that are writing vm pages */
+#endif
};
+#ifdef AFS_LINUX26_ENV
+struct pagewriter {
+ struct list_head link;
+ pid_t writer;
+};
+#endif
+
#define DONT_CHECK_MODE_BITS 0
#define CHECK_MODE_BITS 1
#define CMB_ALLOW_EXEC_AS_READ 2 /* For the NFS xlator */
#define afs_InReadDir(avc) (((avc)->f.states & CReadDir) && (avc)->readdir_pid == MyPidxx2Pid(MyPidxx))
-/* The PFlush algorithm makes use of the fact that Fid.Unique is not used in
- below hash algorithms. Change it if need be so that flushing algorithm
- doesn't move things from one hash chain to another
-*/
-/* extern int afs_dhashsize; */
-#define DCHash(v, c) ((((v)->Fid.Vnode + (v)->Fid.Volume + (c))) & (afs_dhashsize-1))
- /*Vnode, Chunk -> Hash table index */
-#define DVHash(v) ((((v)->Fid.Vnode + (v)->Fid.Volume )) & (afs_dhashsize-1))
- /*Vnode -> Other hash table index */
-/* don't hash on the cell, our callback-breaking code sometimes fails to compute
- the cell correctly, and only scans one hash bucket */
-#define VCHash(fid) (((fid)->Fid.Volume + (fid)->Fid.Vnode) & (VCSIZE-1))
-/* Hash only on volume to speed up volume callbacks. */
-#define VCHashV(fid) ((fid)->Fid.Volume & (VCSIZE-1))
-
extern struct dcache **afs_indexTable; /*Pointers to in-memory dcache entries */
extern afs_int32 *afs_indexUnique; /*dcache entry Fid.Unique */
extern afs_int32 *afs_dvnextTbl; /*Dcache hash table links */
git://git.openafs.org / openafs.git / blobdiff