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Lock page queue accesses by vm_page_free().

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This commit is contained in:
alc 2002-07-28 08:01:48 +00:00
parent 559cc21a49
commit 4f2061c595
1 changed files with 8 additions and 0 deletions
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8
sys/ufs/ufs/ufs_readwrite.c
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@ -648,11 +648,13 @@ ffs_getpages(ap)
if (mreq->valid) {
if (mreq->valid != VM_PAGE_BITS_ALL)
vm_page_zero_invalid(mreq, TRUE);
vm_page_lock_queues();
for (i = 0; i < pcount; i++) {
if (i != ap->a_reqpage) {
vm_page_free(ap->a_m[i]);
}
}
vm_page_unlock_queues();
return VM_PAGER_OK;
}
@ -678,10 +680,12 @@ ffs_getpages(ap)
dp = VTOI(vp)->i_devvp;
if (ufs_bmaparray(vp, reqlblkno, &reqblkno, 0, &bforwards, &bbackwards)
|| (reqblkno == -1)) {
vm_page_lock_queues();
for(i = 0; i < pcount; i++) {
if (i != ap->a_reqpage)
vm_page_free(ap->a_m[i]);
}
vm_page_unlock_queues();
if (reqblkno == -1) {
if ((mreq->flags & PG_ZERO) == 0)
vm_page_zero_fill(mreq);
@ -705,8 +709,10 @@ ffs_getpages(ap)
pbackwards = poff + bbackwards * pagesperblock;
if (ap->a_reqpage > pbackwards) {
firstpage = ap->a_reqpage - pbackwards;
vm_page_lock_queues();
for(i=0;i<firstpage;i++)
vm_page_free(ap->a_m[i]);
vm_page_unlock_queues();
}
/*
@ -716,8 +722,10 @@ ffs_getpages(ap)
pforwards = (pagesperblock - (poff + 1)) +
bforwards * pagesperblock;
if (pforwards < (pcount - (ap->a_reqpage + 1))) {
vm_page_lock_queues();
for( i = ap->a_reqpage + pforwards + 1; i < pcount; i++)
vm_page_free(ap->a_m[i]);
vm_page_unlock_queues();
pcount = ap->a_reqpage + pforwards + 1;
}