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Code Issues Releases Activity

Change vm_page_cowfault() so that it doesn't allocate a pre-busied page.

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This commit is contained in:
Alan Cox 2006-08-10 04:48:29 +00:00
parent 939b8dd67a
commit 75db2abb2e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=161143
1 changed files with 1 additions and 2 deletions
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3
sys/vm/vm_page.c
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@ -1733,7 +1733,7 @@ vm_page_cowfault(vm_page_t m)
retry_alloc:
pmap_remove_all(m);
vm_page_remove(m);
mnew = vm_page_alloc(object, pindex, VM_ALLOC_NORMAL);
mnew = vm_page_alloc(object, pindex, VM_ALLOC_NORMAL | VM_ALLOC_NOBUSY);
if (mnew == NULL) {
vm_page_insert(m, object, pindex);
vm_page_unlock_queues();
@ -1757,7 +1757,6 @@ vm_page_cowfault(vm_page_t m)
pmap_copy_page(m, mnew);
mnew->valid = VM_PAGE_BITS_ALL;
vm_page_dirty(mnew);
vm_page_flag_clear(mnew, PG_BUSY);
mnew->wire_count = m->wire_count - m->cow;
m->wire_count = m->cow;
}