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Add page lock assertions where we access the page's hold_count.

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This commit is contained in:
Alan Cox 2010-05-02 23:33:10 +00:00
parent 5eb6cd0263
commit b8d36afcfe
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=207544
1 changed files with 3 additions and 0 deletions
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3
sys/vm/vm_page.c
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@ -1657,6 +1657,7 @@ vm_page_try_to_cache(vm_page_t m)
{
mtx_assert(&vm_page_queue_mtx, MA_OWNED);
vm_page_lock_assert(m, MA_OWNED);
VM_OBJECT_LOCK_ASSERT(m->object, MA_OWNED);
if (m->dirty || m->hold_count || m->busy || m->wire_count ||
(m->oflags & VPO_BUSY) || (m->flags & PG_UNMANAGED)) {
@ -1680,6 +1681,7 @@ vm_page_try_to_free(vm_page_t m)
{
mtx_assert(&vm_page_queue_mtx, MA_OWNED);
vm_page_lock_assert(m, MA_OWNED);
if (m->object != NULL)
VM_OBJECT_LOCK_ASSERT(m->object, MA_OWNED);
if (m->dirty || m->hold_count || m->busy || m->wire_count ||
@ -1707,6 +1709,7 @@ vm_page_cache(vm_page_t m)
vm_page_t root;
mtx_assert(&vm_page_queue_mtx, MA_OWNED);
vm_page_lock_assert(m, MA_OWNED);
object = m->object;
VM_OBJECT_LOCK_ASSERT(object, MA_OWNED);
if ((m->flags & PG_UNMANAGED) || (m->oflags & VPO_BUSY) || m->busy ||