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Lock the vm object when freeing pages.

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This commit is contained in:
alc 2003-06-15 21:50:38 +00:00
parent 441816c04b
commit 1fe65301dc
1 changed files with 8 additions and 0 deletions
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8
sys/ufs/ffs/ffs_vnops.c
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@ -823,6 +823,7 @@ ffs_getpages(ap)
if (mreq->valid) {
if (mreq->valid != VM_PAGE_BITS_ALL)
vm_page_zero_invalid(mreq, TRUE);
VM_OBJECT_LOCK(mreq->object);
vm_page_lock_queues();
for (i = 0; i < pcount; i++) {
if (i != ap->a_reqpage) {
@ -830,6 +831,7 @@ ffs_getpages(ap)
}
}
vm_page_unlock_queues();
VM_OBJECT_UNLOCK(mreq->object);
return VM_PAGER_OK;
}
@ -855,12 +857,14 @@ ffs_getpages(ap)
dp = VTOI(vp)->i_devvp;
if (ufs_bmaparray(vp, reqlblkno, &reqblkno, 0, &bforwards, &bbackwards)
|| (reqblkno == -1)) {
VM_OBJECT_LOCK(obj);
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();
VM_OBJECT_UNLOCK(obj);
if (reqblkno == -1) {
if ((mreq->flags & PG_ZERO) == 0)
pmap_zero_page(mreq);
@ -884,10 +888,12 @@ ffs_getpages(ap)
pbackwards = poff + bbackwards * pagesperblock;
if (ap->a_reqpage > pbackwards) {
firstpage = ap->a_reqpage - pbackwards;
VM_OBJECT_LOCK(obj);
vm_page_lock_queues();
for(i=0;i<firstpage;i++)
vm_page_free(ap->a_m[i]);
vm_page_unlock_queues();
VM_OBJECT_UNLOCK(obj);
}
/*
@ -897,10 +903,12 @@ ffs_getpages(ap)
pforwards = (pagesperblock - (poff + 1)) +
bforwards * pagesperblock;
if (pforwards < (pcount - (ap->a_reqpage + 1))) {
VM_OBJECT_LOCK(obj);
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();
VM_OBJECT_UNLOCK(obj);
pcount = ap->a_reqpage + pforwards + 1;
}