2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
11 * --------------------- Required definitions ---------------------
13 #include <afsconfig.h>
14 #include "afs/param.h"
17 #include "afs/sysincludes.h" /*Standard vendor system headers */
18 #include "afsincludes.h" /*AFS-based standard headers */
19 #include "afs/afs_stats.h" /* statistics */
20 #include "afs/afs_cbqueue.h"
21 #include "afs/afs_osidnlc.h"
23 afs_uint32 afs_stampValue = 0;
29 * Send a truncation request to a FileServer.
35 * We're write-locked upon entry.
39 afs_StoreMini(struct vcache *avc, struct vrequest *areq)
42 struct AFSStoreStatus InStatus;
43 struct AFSFetchStatus OutStatus;
44 struct AFSVolSync tsync;
46 struct rx_call *tcall;
47 struct rx_connection *rxconn;
48 afs_size_t tlen, xlen = 0;
50 AFS_STATCNT(afs_StoreMini);
51 afs_Trace2(afs_iclSetp, CM_TRACE_STOREMINI, ICL_TYPE_POINTER, avc,
52 ICL_TYPE_INT32, avc->f.m.Length);
53 tlen = avc->f.m.Length;
54 if (avc->f.truncPos < tlen)
55 tlen = avc->f.truncPos;
56 avc->f.truncPos = AFS_NOTRUNC;
57 avc->f.states &= ~CExtendedFile;
60 tc = afs_Conn(&avc->f.fid, areq, SHARED_LOCK, &rxconn);
62 #ifdef AFS_64BIT_CLIENT
66 tcall = rx_NewCall(rxconn);
68 /* Set the client mod time since we always want the file
69 * to have the client's mod time and not the server's one
70 * (to avoid problems with make, etc.) It almost always
71 * works fine with standard afs because them server/client
72 * times are in sync and more importantly this storemini
73 * it's a special call that would typically be followed by
74 * the proper store-data or store-status calls.
76 InStatus.Mask = AFS_SETMODTIME;
77 InStatus.ClientModTime = avc->f.m.Date;
78 XSTATS_START_TIME(AFS_STATS_FS_RPCIDX_STOREDATA);
79 afs_Trace4(afs_iclSetp, CM_TRACE_STOREDATA64, ICL_TYPE_FID,
80 &avc->f.fid.Fid, ICL_TYPE_OFFSET,
81 ICL_HANDLE_OFFSET(avc->f.m.Length), ICL_TYPE_OFFSET,
82 ICL_HANDLE_OFFSET(xlen), ICL_TYPE_OFFSET,
83 ICL_HANDLE_OFFSET(tlen));
85 #ifdef AFS_64BIT_CLIENT
86 if (!afs_serverHasNo64Bit(tc)) {
88 StartRXAFS_StoreData64(tcall,
89 (struct AFSFid *)&avc->f.fid.Fid,
90 &InStatus, avc->f.m.Length,
91 (afs_size_t) 0, tlen);
96 if ((avc->f.m.Length > 0x7fffffff) ||
97 (tlen > 0x7fffffff) ||
98 ((0x7fffffff - tlen) < avc->f.m.Length)) {
103 StartRXAFS_StoreData(tcall,
104 (struct AFSFid *)&avc->f.fid.Fid,
105 &InStatus, l1, 0, l2);
107 #else /* AFS_64BIT_CLIENT */
109 StartRXAFS_StoreData(tcall, (struct AFSFid *)&avc->f.fid.Fid,
110 &InStatus, avc->f.m.Length, 0, tlen);
111 #endif /* AFS_64BIT_CLIENT */
113 code = EndRXAFS_StoreData(tcall, &OutStatus, &tsync);
115 #ifdef AFS_64BIT_CLIENT
118 code = rx_EndCall(tcall, code);
121 #ifdef AFS_64BIT_CLIENT
122 if (code == RXGEN_OPCODE && !afs_serverHasNo64Bit(tc)) {
123 afs_serverSetNo64Bit(tc);
126 #endif /* AFS_64BIT_CLIENT */
130 (tc, rxconn, code, &avc->f.fid, areq, AFS_STATS_FS_RPCIDX_STOREDATA,
134 afs_ProcessFS(avc, &OutStatus, areq);
140 * afs_StoreAllSegments
143 * Stores all modified segments back to server
146 * avc : Pointer to vcache entry.
147 * areq : Pointer to request structure.
150 * Called with avc write-locked.
152 #if defined (AFS_HPUX_ENV)
153 int NCHUNKSATONCE = 3;
155 int NCHUNKSATONCE = 64;
161 afs_StoreAllSegments(struct vcache *avc, struct vrequest *areq,
167 afs_int32 origCBs, foreign = 0;
169 afs_hyper_t newDV, oldDV; /* DV when we start, and finish, respectively */
170 struct dcache **dcList;
171 unsigned int i, j, minj, moredata, high, off;
173 afs_size_t maxStoredLength; /* highest offset we've written to server. */
174 int safety, marineronce = 0;
176 AFS_STATCNT(afs_StoreAllSegments);
178 hset(oldDV, avc->f.m.DataVersion);
179 hset(newDV, avc->f.m.DataVersion);
180 hash = DVHash(&avc->f.fid);
181 foreign = (avc->f.states & CForeign);
182 dcList = (struct dcache **)osi_AllocLargeSpace(AFS_LRALLOCSIZ);
183 afs_Trace2(afs_iclSetp, CM_TRACE_STOREALL, ICL_TYPE_POINTER, avc,
184 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(avc->f.m.Length));
185 #if !defined(AFS_AIX32_ENV) && !defined(AFS_SGI65_ENV)
186 /* In the aix vm implementation we need to do the vm_writep even
187 * on the memcache case since that's we adjust the file's size
188 * and finish flushing partial vm pages.
190 if ((cacheDiskType != AFS_FCACHE_TYPE_MEM) ||
191 (sync & AFS_VMSYNC_INVAL) || (sync & AFS_VMSYNC) ||
192 (sync & AFS_LASTSTORE))
193 #endif /* !AFS_AIX32_ENV && !AFS_SGI65_ENV */
195 /* If we're not diskless, reading a file may stress the VM
196 * system enough to cause a pageout, and this vnode would be
197 * locked when the pageout occurs. We can prevent this problem
198 * by making sure all dirty pages are already flushed. We don't
199 * do this when diskless because reading a diskless (i.e.
200 * memory-resident) chunk doesn't require using new VM, and we
201 * also don't want to dump more dirty data into a diskless cache,
202 * since they're smaller, and we might exceed its available
205 #if defined(AFS_SUN5_ENV)
206 if (sync & AFS_VMSYNC_INVAL) /* invalidate VM pages */
207 osi_VM_TryToSmush(avc, CRED(), 1);
210 osi_VM_StoreAllSegments(avc);
212 if (AFS_IS_DISCONNECTED && !AFS_IN_SYNC) {
213 /* This will probably make someone sad ... */
214 /*printf("Net down in afs_StoreSegments\n");*/
217 ConvertWToSLock(&avc->lock);
220 * Subsequent code expects a sorted list, and it expects all the
221 * chunks in the list to be contiguous, so we need a sort and a
222 * while loop in here, too - but this will work for a first pass...
223 * 92.10.05 - OK, there's a sort in here now. It's kind of a modified
224 * bin sort, I guess. Chunk numbers start with 0
226 * - Have to get a write lock on xdcache because GetDSlot might need it (if
227 * the chunk doesn't have a dcache struct).
228 * This seems like overkill in most cases.
229 * - I'm not sure that it's safe to do "index = .hvNextp", then unlock
230 * xdcache, then relock xdcache and try to use index. It is done
231 * a lot elsewhere in the CM, but I'm not buying that argument.
232 * - should be able to check IFDataMod without doing the GetDSlot (just
233 * hold afs_xdcache). That way, it's easy to do this without the
234 * writelock on afs_xdcache, and we save unneccessary disk
235 * operations. I don't think that works, 'cuz the next pointers
238 origCBs = afs_allCBs;
241 tlen = avc->f.m.Length;
245 memset(dcList, 0, NCHUNKSATONCE * sizeof(struct dcache *));
249 /* lock and start over from beginning of hash chain
250 * in order to avoid a race condition. */
251 ObtainWriteLock(&afs_xdcache, 284);
252 index = afs_dvhashTbl[hash];
254 for (j = 0; index != NULLIDX;) {
255 if ((afs_indexFlags[index] & IFDataMod)
256 && (afs_indexUnique[index] == avc->f.fid.Fid.Unique)) {
257 tdc = afs_GetDSlot(index, 0); /* refcount+1. */
258 ReleaseReadLock(&tdc->tlock);
259 if (!FidCmp(&tdc->f.fid, &avc->f.fid) && tdc->f.chunk >= minj) {
260 off = tdc->f.chunk - minj;
261 if (off < NCHUNKSATONCE) {
263 osi_Panic("dclist slot already in use!");
264 if (afs_mariner && !marineronce) {
265 /* first chunk only */
266 afs_MarinerLog("store$Storing", avc);
273 /* DCLOCKXXX: chunkBytes is protected by tdc->lock which we
274 * can't grab here, due to lock ordering with afs_xdcache.
275 * So, disable this shortcut for now. -- kolya 2001-10-13
277 /* shortcut: big win for little files */
278 /* tlen -= tdc->f.chunkBytes;
285 if (j == NCHUNKSATONCE)
292 index = afs_dvnextTbl[index];
294 ReleaseWriteLock(&afs_xdcache);
296 /* this guy writes chunks, puts back dcache structs, and bumps newDV */
297 /* "moredata" just says "there are more dirty chunks yet to come".
301 afs_CacheStoreVCache(dcList, avc, areq, sync,
302 minj, high, moredata,
303 &newDV, &maxStoredLength);
304 /* Release any zero-length dcache entries in our interval
305 * that we locked but didn't store back above.
307 for (j = 0; j <= high; j++) {
310 osi_Assert(tdc->f.chunkBytes == 0);
311 ReleaseSharedLock(&tdc->lock);
317 minj += NCHUNKSATONCE;
318 } while (!code && moredata);
320 UpgradeSToWLock(&avc->lock, 29);
322 /* send a trivial truncation store if did nothing else */
325 * Call StoreMini if we haven't written enough data to extend the
326 * file at the fileserver to the client's notion of the file length.
328 if ((avc->f.truncPos != AFS_NOTRUNC)
329 || ((avc->f.states & CExtendedFile)
330 && (maxStoredLength < avc->f.m.Length))) {
331 code = afs_StoreMini(avc, areq);
333 hadd32(newDV, 1); /* just bumped here, too */
335 avc->f.states &= ~CExtendedFile;
339 * Finally, turn off DWriting, turn on DFEntryMod,
340 * update f.versionNo.
341 * A lot of this could be integrated into the loop above
352 NCHUNKSATONCE * sizeof(struct dcache *));
354 /* overkill, but it gets the lock in case GetDSlot needs it */
355 ObtainWriteLock(&afs_xdcache, 285);
357 for (j = 0, safety = 0, index = afs_dvhashTbl[hash];
358 index != NULLIDX && safety < afs_cacheFiles + 2;) {
360 if (afs_indexUnique[index] == avc->f.fid.Fid.Unique) {
361 tdc = afs_GetDSlot(index, 0);
362 ReleaseReadLock(&tdc->tlock);
364 if (!FidCmp(&tdc->f.fid, &avc->f.fid)
365 && tdc->f.chunk >= minj) {
366 off = tdc->f.chunk - minj;
367 if (off < NCHUNKSATONCE) {
368 /* this is the file, and the correct chunk range */
369 if (j >= NCHUNKSATONCE)
371 ("Too many dcache entries in range\n");
376 if (j == NCHUNKSATONCE)
384 index = afs_dvnextTbl[index];
386 ReleaseWriteLock(&afs_xdcache);
388 for (i = 0; i < j; i++) {
389 /* Iterate over the dcache entries we collected above */
391 ObtainSharedLock(&tdc->lock, 677);
393 /* was code here to clear IFDataMod, but it should only be done
394 * in storedcache and storealldcache.
396 /* Only increase DV if we had up-to-date data to start with.
397 * Otherwise, we could be falsely upgrading an old chunk
398 * (that we never read) into one labelled with the current
399 * DV #. Also note that we check that no intervening stores
400 * occurred, otherwise we might mislabel cache information
401 * for a chunk that we didn't store this time
403 /* Don't update the version number if it's not yet set. */
404 if (!hsame(tdc->f.versionNo, h_unset)
405 && hcmp(tdc->f.versionNo, oldDV) >= 0) {
407 if ((!(afs_dvhack || foreign)
408 && hsame(avc->f.m.DataVersion, newDV))
409 || ((afs_dvhack || foreign)
410 && (origCBs == afs_allCBs))) {
411 /* no error, this is the DV */
413 UpgradeSToWLock(&tdc->lock, 678);
414 hset(tdc->f.versionNo, avc->f.m.DataVersion);
415 tdc->dflags |= DFEntryMod;
416 ConvertWToSLock(&tdc->lock);
420 ReleaseSharedLock(&tdc->lock);
424 minj += NCHUNKSATONCE;
431 * Invalidate chunks after an error for ccores files since
432 * afs_inactive won't be called for these and they won't be
433 * invalidated. Also discard data if it's a permanent error from the
436 if (areq->permWriteError || (avc->f.states & CCore)) {
437 afs_InvalidateAllSegments(avc);
440 afs_Trace3(afs_iclSetp, CM_TRACE_STOREALLDONE, ICL_TYPE_POINTER, avc,
441 ICL_TYPE_INT32, avc->f.m.Length, ICL_TYPE_INT32, code);
442 /* would like a Trace5, but it doesn't exist... */
443 afs_Trace3(afs_iclSetp, CM_TRACE_AVCLOCKER, ICL_TYPE_POINTER, avc,
444 ICL_TYPE_INT32, avc->lock.wait_states, ICL_TYPE_INT32,
445 avc->lock.excl_locked);
446 afs_Trace4(afs_iclSetp, CM_TRACE_AVCLOCKEE, ICL_TYPE_POINTER, avc,
447 ICL_TYPE_INT32, avc->lock.wait_states, ICL_TYPE_INT32,
448 avc->lock.readers_reading, ICL_TYPE_INT32,
449 avc->lock.num_waiting);
452 * Finally, if updated DataVersion matches newDV, we did all of the
453 * stores. If mapDV indicates that the page cache was flushed up
454 * to when we started the store, then we can relabel them as flushed
455 * as recently as newDV.
456 * Turn off CDirty bit because the stored data is now in sync with server.
458 if (code == 0 && hcmp(avc->mapDV, oldDV) >= 0) {
459 if ((!(afs_dvhack || foreign) && hsame(avc->f.m.DataVersion, newDV))
460 || ((afs_dvhack || foreign) && (origCBs == afs_allCBs))) {
461 hset(avc->mapDV, newDV);
462 avc->f.states &= ~CDirty;
465 osi_FreeLargeSpace(dcList);
467 /* If not the final write a temporary error is ok. */
468 if (code && !areq->permWriteError && !(sync & AFS_LASTSTORE))
473 } /*afs_StoreAllSegments (new 03/02/94) */
477 * afs_InvalidateAllSegments
480 * Invalidates all chunks for a given file
483 * avc : Pointer to vcache entry.
486 * For example, called after an error has been detected. Called
487 * with avc write-locked, and afs_xdcache unheld.
491 afs_InvalidateAllSegments(struct vcache *avc)
496 struct dcache **dcList;
497 int i, dcListMax, dcListCount;
499 AFS_STATCNT(afs_InvalidateAllSegments);
500 afs_Trace2(afs_iclSetp, CM_TRACE_INVALL, ICL_TYPE_POINTER, avc,
501 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(avc->f.m.Length));
502 hash = DVHash(&avc->f.fid);
503 avc->f.truncPos = AFS_NOTRUNC; /* don't truncate later */
504 avc->f.states &= ~CExtendedFile; /* not any more */
505 ObtainWriteLock(&afs_xcbhash, 459);
506 afs_DequeueCallback(avc);
507 avc->f.states &= ~(CStatd | CDirty); /* mark status information as bad, too */
508 ReleaseWriteLock(&afs_xcbhash);
509 if (avc->f.fid.Fid.Vnode & 1 || (vType(avc) == VDIR))
510 osi_dnlc_purgedp(avc);
511 /* Blow away pages; for now, only for Solaris */
512 #if (defined(AFS_SUN5_ENV))
513 if (WriteLocked(&avc->lock))
514 osi_ReleaseVM(avc, (afs_ucred_t *)0);
517 * Block out others from screwing with this table; is a read lock
520 ObtainWriteLock(&afs_xdcache, 286);
523 for (index = afs_dvhashTbl[hash]; index != NULLIDX;) {
524 if (afs_indexUnique[index] == avc->f.fid.Fid.Unique) {
525 tdc = afs_GetDSlot(index, 0);
526 ReleaseReadLock(&tdc->tlock);
527 if (!FidCmp(&tdc->f.fid, &avc->f.fid))
531 index = afs_dvnextTbl[index];
534 dcList = osi_Alloc(dcListMax * sizeof(struct dcache *));
537 for (index = afs_dvhashTbl[hash]; index != NULLIDX;) {
538 if (afs_indexUnique[index] == avc->f.fid.Fid.Unique) {
539 tdc = afs_GetDSlot(index, 0);
540 ReleaseReadLock(&tdc->tlock);
541 if (!FidCmp(&tdc->f.fid, &avc->f.fid)) {
542 /* same file? we'll zap it */
543 if (afs_indexFlags[index] & IFDataMod) {
544 afs_stats_cmperf.cacheCurrDirtyChunks--;
545 /* don't write it back */
546 afs_indexFlags[index] &= ~IFDataMod;
548 afs_indexFlags[index] &= ~IFAnyPages;
549 if (dcListCount < dcListMax)
550 dcList[dcListCount++] = tdc;
557 index = afs_dvnextTbl[index];
559 ReleaseWriteLock(&afs_xdcache);
561 for (i = 0; i < dcListCount; i++) {
564 ObtainWriteLock(&tdc->lock, 679);
566 if (vType(avc) == VDIR)
568 ReleaseWriteLock(&tdc->lock);
572 osi_Free(dcList, dcListMax * sizeof(struct dcache *));
579 * Extend a cache file
581 * \param avc pointer to vcache to extend data for
582 * \param alen Length to extend file to
585 * \note avc must be write locked. May release and reobtain avc and GLOCK
588 afs_ExtendSegments(struct vcache *avc, afs_size_t alen, struct vrequest *areq)
590 afs_size_t offset, toAdd;
591 struct osi_file *tfile;
596 zeros = afs_osi_Alloc(AFS_PAGESIZE);
599 memset(zeros, 0, AFS_PAGESIZE);
601 while (avc->f.m.Length < alen) {
602 tdc = afs_ObtainDCacheForWriting(avc, avc->f.m.Length, alen - avc->f.m.Length, areq, 0);
608 toAdd = alen - avc->f.m.Length;
610 offset = avc->f.m.Length - AFS_CHUNKTOBASE(tdc->f.chunk);
611 if (offset + toAdd > AFS_CHUNKTOSIZE(tdc->f.chunk)) {
612 toAdd = AFS_CHUNKTOSIZE(tdc->f.chunk) - offset;
614 tfile = afs_CFileOpen(&tdc->f.inode);
615 while(tdc->validPos < avc->f.m.Length + toAdd) {
618 towrite = (avc->f.m.Length + toAdd) - tdc->validPos;
619 if (towrite > AFS_PAGESIZE) towrite = AFS_PAGESIZE;
621 code = afs_CFileWrite(tfile,
622 tdc->validPos - AFS_CHUNKTOBASE(tdc->f.chunk),
624 tdc->validPos += towrite;
626 afs_CFileClose(tfile);
627 afs_AdjustSize(tdc, offset + toAdd );
628 avc->f.m.Length += toAdd;
629 ReleaseWriteLock(&tdc->lock);
633 afs_osi_Free(zeros, AFS_PAGESIZE);
638 * afs_TruncateAllSegments
641 * Truncate a cache file.
644 * avc : Ptr to vcache entry to truncate.
645 * alen : Number of bytes to make the file.
646 * areq : Ptr to request structure.
649 * Called with avc write-locked; in VFS40 systems, pvnLock is also
653 afs_TruncateAllSegments(struct vcache *avc, afs_size_t alen,
654 struct vrequest *areq, afs_ucred_t *acred)
662 struct dcache **tdcArray;
664 AFS_STATCNT(afs_TruncateAllSegments);
665 avc->f.m.Date = osi_Time();
666 afs_Trace3(afs_iclSetp, CM_TRACE_TRUNCALL, ICL_TYPE_POINTER, avc,
667 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(avc->f.m.Length),
668 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(alen));
669 if (alen >= avc->f.m.Length) {
671 * Special speedup since Sun's vm extends the file this way;
672 * we've never written to the file thus we can just set the new
673 * length and avoid the needless calls below.
674 * Also used for ftruncate calls which can extend the file.
675 * To completely minimize the possible extra StoreMini RPC, we really
676 * should keep the ExtendedPos as well and clear this flag if we
677 * truncate below that value before we store the file back.
679 avc->f.states |= CExtendedFile;
680 avc->f.m.Length = alen;
683 #if (defined(AFS_SUN5_ENV))
685 /* Zero unused portion of last page */
686 osi_VM_PreTruncate(avc, alen, acred);
690 #if (defined(AFS_SUN5_ENV))
691 ObtainWriteLock(&avc->vlock, 546);
692 avc->activeV++; /* Block new getpages */
693 ReleaseWriteLock(&avc->vlock);
696 ReleaseWriteLock(&avc->lock);
699 /* Flush pages beyond end-of-file. */
700 osi_VM_Truncate(avc, alen, acred);
703 ObtainWriteLock(&avc->lock, 79);
705 avc->f.m.Length = alen;
707 if (alen < avc->f.truncPos)
708 avc->f.truncPos = alen;
709 code = DVHash(&avc->f.fid);
711 /* block out others from screwing with this table */
712 ObtainWriteLock(&afs_xdcache, 287);
715 for (index = afs_dvhashTbl[code]; index != NULLIDX;) {
716 if (afs_indexUnique[index] == avc->f.fid.Fid.Unique) {
717 tdc = afs_GetDSlot(index, 0);
718 ReleaseReadLock(&tdc->tlock);
719 if (!FidCmp(&tdc->f.fid, &avc->f.fid))
723 index = afs_dvnextTbl[index];
726 /* Now allocate space where we can save those dcache entries, and
727 * do a second pass over them.. Since we're holding xdcache, it
728 * shouldn't be changing.
730 tdcArray = osi_Alloc(dcCount * sizeof(struct dcache *));
733 for (index = afs_dvhashTbl[code]; index != NULLIDX;) {
734 if (afs_indexUnique[index] == avc->f.fid.Fid.Unique) {
735 tdc = afs_GetDSlot(index, 0);
736 ReleaseReadLock(&tdc->tlock);
737 if (!FidCmp(&tdc->f.fid, &avc->f.fid)) {
738 /* same file, and modified, we'll store it back */
739 if (dcPos < dcCount) {
740 tdcArray[dcPos++] = tdc;
748 index = afs_dvnextTbl[index];
751 ReleaseWriteLock(&afs_xdcache);
753 /* Now we loop over the array of dcache entries and truncate them */
754 for (index = 0; index < dcPos; index++) {
755 struct osi_file *tfile;
757 tdc = tdcArray[index];
759 newSize = alen - AFS_CHUNKTOBASE(tdc->f.chunk);
762 ObtainSharedLock(&tdc->lock, 672);
763 if (newSize < tdc->f.chunkBytes && newSize < MAX_AFS_UINT32) {
764 UpgradeSToWLock(&tdc->lock, 673);
765 tfile = afs_CFileOpen(&tdc->f.inode);
766 afs_CFileTruncate(tfile, (afs_int32)newSize);
767 afs_CFileClose(tfile);
768 afs_AdjustSize(tdc, (afs_int32)newSize);
769 if (alen < tdc->validPos) {
770 if (alen < AFS_CHUNKTOBASE(tdc->f.chunk))
773 tdc->validPos = alen;
775 ConvertWToSLock(&tdc->lock);
777 ReleaseSharedLock(&tdc->lock);
781 osi_Free(tdcArray, dcCount * sizeof(struct dcache *));
783 #if (defined(AFS_SUN5_ENV))
784 ObtainWriteLock(&avc->vlock, 547);
785 if (--avc->activeV == 0 && (avc->vstates & VRevokeWait)) {
786 avc->vstates &= ~VRevokeWait;
787 afs_osi_Wakeup((char *)&avc->vstates);
789 ReleaseWriteLock(&avc->vlock);