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windows-scache-20080308

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LICENSE MIT

do not discard data buffers we wish to keep
This commit is contained in:
Jeffrey Altman 2008-03-08 23:17:45 +00:00
parent c32f5466f0
commit 27008912ec
1 changed files with 7 additions and 4 deletions
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11
src/WINNT/afsd/cm_scache.c
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@ -632,16 +632,17 @@ cm_scache_t *cm_FindSCache(cm_fid_t *fidp)
return NULL;
}
lock_ObtainWrite(&cm_scacheLock);
lock_ObtainRead(&cm_scacheLock);
for (scp=cm_data.scacheHashTablep[hash]; scp; scp=scp->nextp) {
if (cm_FidCmp(fidp, &scp->fid) == 0) {
cm_HoldSCacheNoLock(scp);
lock_ConvertRToW(&cm_scacheLock);
cm_AdjustScacheLRU(scp);
lock_ReleaseWrite(&cm_scacheLock);
return scp;
}
}
lock_ReleaseWrite(&cm_scacheLock);
lock_ReleaseRead(&cm_scacheLock);
return NULL;
}
@ -1662,8 +1663,8 @@ void cm_MergeStatus(cm_scache_t *dscp,
}
if (scp->dataVersion != 0 &&
(!(flags & CM_MERGEFLAG_DIROP) && dataVersion != scp->dataVersion ||
(flags & CM_MERGEFLAG_DIROP) && dataVersion - scp->dataVersion > 1)) {
(!(flags & (CM_MERGEFLAG_DIROP|CM_MERGEFLAG_STOREDATA)) && dataVersion != scp->dataVersion ||
(flags & (CM_MERGEFLAG_DIROP|CM_MERGEFLAG_STOREDATA)) && dataVersion - scp->dataVersion > 1)) {
/*
* We now know that all of the data buffers that we have associated
* with this scp are invalid. Subsequent operations will go faster
@ -1671,6 +1672,8 @@ void cm_MergeStatus(cm_scache_t *dscp,
*
* We do not remove directory buffers if the dataVersion delta is 1 because
* those version numbers will be updated as part of the directory operation.
*
* We do not remove storedata buffers because they will still be valid.
*/
int i, j;
cm_buf_t **lbpp;