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call pmap_update() after pmap_enter()s 

ALWAYS call uvm_unloanpage() in cleanup - it's necessary even
in pipe_loan_free() case, since uvm_km_free() doesn't seem
to implicitly unloan the loaned pages
This commit is contained in:
jdolecek 2001-09-20 19:09:13 +00:00
parent 0d859c164b
commit 1d161cb2d4
1 changed files with 4 additions and 3 deletions
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7
sys/kern/sys_pipe.c
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@ -1,4 +1,4 @@
/* $NetBSD: sys_pipe.c,v 1.11 2001/07/26 14:14:28 jdolecek Exp $ */
/* $NetBSD: sys_pipe.c,v 1.12 2001/09/20 19:09:13 jdolecek Exp $ */
/*
* Copyright (c) 1996 John S. Dyson
@ -1060,6 +1060,7 @@ retry:
for(j=0; j < npages; j++, kva += PAGE_SIZE)
pmap_enter(pmap_kernel(), kva, res[j]->phys_addr,
VM_PROT_READ, 0);
pmap_update(pmap_kernel());
wpipe->pipe_state |= PIPE_DIRECTW;
error = 0;
@ -1081,10 +1082,10 @@ retry:
cleanup:
pipelock(wpipe, 0);
if (res)
uvm_unloanpage(res, npages);
if (error || amountpipekva > maxpipekva)
pipe_loan_free(wpipe);
else if (res)
uvm_unloanpage(res, npages);
pipeunlock(wpipe);
if (error == EPIPE) {