/**
* mds_bmap_timeotbl_mdsi -
* Returns bmapseqno.
*/
uint64_t
mds_bmap_timeotbl_mdsi(struct bmap_mds_lease *bml, int flags)
{
uint64_t seq = 0;
if (flags & BTE_DEL) {
bml->bml_flags &= ~BML_TIMEOQ;
mds_bmap_timeotbl_remove(bml);
return (BMAPSEQ_ANY);
}
if (flags & BTE_REATTACH) {
/* BTE_REATTACH is only called from startup context. */
spinlock(&mdsBmapTimeoTbl.btt_lock);
if (mdsBmapTimeoTbl.btt_maxseq < bml->bml_seq)
/*
* A lease has been found in odtable whose
* issuance was after that of the last HWM
* journal entry. (HWM's are journaled every
* BMAP_SEQLOG_FACTOR times.)
*/
seq = mdsBmapTimeoTbl.btt_maxseq = bml->bml_seq;
else if (mdsBmapTimeoTbl.btt_minseq > bml->bml_seq)
/* This lease has already expired. */
seq = BMAPSEQ_ANY;
else
seq = bml->bml_seq;
freelock(&mdsBmapTimeoTbl.btt_lock);
} else {
seq = mds_bmap_timeotbl_getnextseq();
}
BML_LOCK(bml);
if (bml->bml_flags & BML_TIMEOQ) {
mds_bmap_timeotbl_remove(bml);
pll_addtail(&mdsBmapTimeoTbl.btt_leases, bml);
} else {
bml->bml_flags |= BML_TIMEOQ;
pll_addtail(&mdsBmapTimeoTbl.btt_leases, bml);
}
BML_ULOCK(bml);
return (seq);
}
void
_lc_move(struct psc_listcache *plc, void *p, int flags)
{
int locked;
locked = LIST_CACHE_RLOCK(plc);
lc_remove(plc, p);
if (flags & PLCBF_TAIL)
pll_addtail(&plc->plc_pll, p);
else
pll_addhead(&plc->plc_pll, p);
LIST_CACHE_URLOCK(plc, locked);
}
/*
* Add an item entry to a list cache.
* @plc: the list cache to add to.
* @p: item to add.
* @flags: PLCBF_* operational behavior flags.
*/
int
_lc_add(struct psc_listcache *plc, void *p, int flags, void *cmpf)
{
int locked;
locked = LIST_CACHE_RLOCK(plc);
if (plc->plc_flags & PLCF_DYING) {
pfl_assert(flags & PLCBF_DYINGOK);
LIST_CACHE_URLOCK(plc, locked);
return (0);
}
if (cmpf && (flags & PLCBF_REVERSE))
pll_add_sorted_backwards(&plc->plc_pll, p, cmpf);
else if (cmpf)
pll_add_sorted(&plc->plc_pll, p, cmpf);
else if (flags & PLCBF_TAIL)
pll_addtail(&plc->plc_pll, p);
else
pll_addhead(&plc->plc_pll, p);
if (plc->plc_nseen)
pfl_opstat_incr(plc->plc_nseen);
/*
* There is now an item available; wake up waiters who think the
* list is empty.
*/
if (flags & PLCBF_WAKEALL)
pfl_waitq_wakeall(&plc->plc_wq_empty);
else
pfl_waitq_wakeone(&plc->plc_wq_empty);
LIST_CACHE_URLOCK(plc, locked);
return (1);
}
