d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Assert that the containing object is locked in vm_page_io_start() and

Browse Source 
vm_page_io_finish().  The motivation being to transition synchronization of
the vm_page's busy field from the global page queues lock to the per-object
lock.
This commit is contained in:
alc 2004-10-17 22:33:40 +00:00
parent 34bc20db35
commit b36ed839e4
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sys/vm/vm_page.c
View File

@ -335,6 +335,7 @@ void
vm_page_io_start(vm_page_t m)
{
VM_OBJECT_LOCK_ASSERT(m->object, MA_OWNED);
mtx_assert(&vm_page_queue_mtx, MA_OWNED);
m->busy++;
}
@ -343,6 +344,7 @@ void
vm_page_io_finish(vm_page_t m)
{
VM_OBJECT_LOCK_ASSERT(m->object, MA_OWNED);
mtx_assert(&vm_page_queue_mtx, MA_OWNED);
m->busy--;
if (m->busy == 0)