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kernel: remove duppage debug, add comments, cleanup

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This commit is contained in:
cinap_lenrek 2012-02-16 18:04:08 +01:00
parent 083612b34e
commit 77c21a062c
3 changed files with 17 additions and 25 deletions
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7
sys/src/9/port/fault.c
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@ -140,8 +140,8 @@ fixfault(Segment *s, ulong addr, int read, int doputmmu)
lkp = *pg;
lock(lkp);
if(lkp->ref <= 0)
panic("fault: lkp->ref %d <= 0", lkp->ref);
if(lkp->ref < 1)
panic("fault: lkp->ref %d < 1", lkp->ref);
if(lkp->image == &swapimage)
ref = lkp->ref + swapcount(lkp->daddr);
else
@ -149,7 +149,6 @@ fixfault(Segment *s, ulong addr, int read, int doputmmu)
if(ref == 1 && lkp->image){
/* save a copy of the original for the image cache */
duppage(lkp);
ref = lkp->ref;
}
unlock(lkp);
@ -246,7 +245,7 @@ retry:
}
n = devtab[c->type]->read(c, kaddr, ask, daddr);
if(n != ask)
faulterror(Eioload, c, 0);
error(Eioload);
if(ask < BY2PG)
memset(kaddr+ask, 0, BY2PG-ask);