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limit clunk queue length for cclose()

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dont let the clunk queue grow too large if we are allowed to
block (cclose) as the fileserver might run out of fids.
This commit is contained in:
cinap_lenrek 2012-11-07 22:04:29 +01:00
parent 52f71a17da
commit 6f1efd37a2
1 changed files with 4 additions and 3 deletions
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7
sys/src/9/port/chan.c
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@ -476,8 +476,8 @@ chanfree(Chan *c)
struct {
Chan *head;
Chan *tail;
int nqueued;
int nclosed;
ulong nqueued;
ulong nclosed;
Lock l;
QLock q;
Rendez r;
@ -555,7 +555,8 @@ cclose(Chan *c)
if(devtab[c->type]->dc == L'M')
if((c->flag&(CRCLOSE|CCACHE)) == CCACHE)
if((c->qid.type&(QTEXCL|QTMOUNT|QTAUTH)) == 0){
if((c->qid.type&(QTEXCL|QTMOUNT|QTAUTH)) == 0)
if((clunkq.nqueued - clunkq.nclosed) < 64){
closechanq(c);
return;
}