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in uvn_flush(), interpret a "stop" value of 0 as meaning all pages at

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offsets equal to or higher than "start".  use this in uvm_vnp_setsize()
instead of the vnode's size since there can be pages past EOF.
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chs 2001-02-06 10:53:23 +00:00
parent 04534d365c
commit 43eb344e3f
1 changed files with 6 additions and 2 deletions
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8
sys/uvm/uvm_vnode.c
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@ -1,4 +1,4 @@
/* $NetBSD: uvm_vnode.c,v 1.42 2001/01/28 23:30:47 thorpej Exp $ */
/* $NetBSD: uvm_vnode.c,v 1.43 2001/02/06 10:53:23 chs Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@ -342,6 +342,7 @@ uvn_releasepg(pg, nextpgp)
/*
* uvn_flush: flush pages out of a uvm object.
*
* => "stop == 0" means flush all pages at or after "start".
* => object should be locked by caller. we may _unlock_ the object
* if (and only if) we need to clean a page (PGO_CLEANIT), or
* if PGO_SYNCIO is set and there are pages busy.
@ -425,6 +426,9 @@ uvn_flush(uobj, start, stop, flags)
* get init vals and determine how we are going to traverse object
*/
if (stop == 0) {
stop = trunc_page(LLONG_MAX);
}
curoff = 0;
need_iosync = FALSE;
retval = TRUE;
@ -1034,7 +1038,7 @@ uvm_vnp_setsize(vp, newsize)
*/
if (uvn->u_size > newsize && uvn->u_size != VSIZENOTSET) {
(void) uvn_flush(&uvn->u_obj, newsize, uvn->u_size, PGO_FREE);
(void) uvn_flush(&uvn->u_obj, newsize, 0, PGO_FREE);
}
uvn->u_size = newsize;
simple_unlock(&uvn->u_obj.vmobjlock);