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Add vm object locking.

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This commit is contained in:
alc 2003-06-13 08:11:14 +00:00
parent d187b499cb
commit 5549e4aa25
2 changed files with 16 additions and 2 deletions
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9
sys/dev/agp/agp_i810.c
View File

@ -584,8 +584,11 @@ agp_i810_alloc_memory(device_t dev, int type, vm_size_t size)
* get its physical address.
*/
vm_page_t m;
VM_OBJECT_LOCK(mem->am_obj);
m = vm_page_grab(mem->am_obj, 0,
VM_ALLOC_WIRED | VM_ALLOC_ZERO | VM_ALLOC_RETRY);
VM_OBJECT_UNLOCK(mem->am_obj);
if ((m->flags & PG_ZERO) == 0)
pmap_zero_page(m);
vm_page_lock_queues();
@ -616,7 +619,11 @@ agp_i810_free_memory(device_t dev, struct agp_memory *mem)
/*
* Unwire the page which we wired in alloc_memory.
*/
vm_page_t m = vm_page_lookup(mem->am_obj, 0);
vm_page_t m;
VM_OBJECT_LOCK(mem->am_obj);
m = vm_page_lookup(mem->am_obj, 0);
VM_OBJECT_UNLOCK(mem->am_obj);
vm_page_lock_queues();
vm_page_unwire(m, 0);
vm_page_unlock_queues();

9
sys/pci/agp_i810.c
View File

@ -584,8 +584,11 @@ agp_i810_alloc_memory(device_t dev, int type, vm_size_t size)
* get its physical address.
*/
vm_page_t m;
VM_OBJECT_LOCK(mem->am_obj);
m = vm_page_grab(mem->am_obj, 0,
VM_ALLOC_WIRED | VM_ALLOC_ZERO | VM_ALLOC_RETRY);
VM_OBJECT_UNLOCK(mem->am_obj);
if ((m->flags & PG_ZERO) == 0)
pmap_zero_page(m);
vm_page_lock_queues();
@ -616,7 +619,11 @@ agp_i810_free_memory(device_t dev, struct agp_memory *mem)
/*
* Unwire the page which we wired in alloc_memory.
*/
vm_page_t m = vm_page_lookup(mem->am_obj, 0);
vm_page_t m;
VM_OBJECT_LOCK(mem->am_obj);
m = vm_page_lookup(mem->am_obj, 0);
VM_OBJECT_UNLOCK(mem->am_obj);
vm_page_lock_queues();
vm_page_unwire(m, 0);
vm_page_unlock_queues();