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Two changes to kmem_malloc():

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- Use VM_ALLOC_WIRED.
 - Perform vm_page_wakeup() after pmap_enter(), like we do everywhere else.
This commit is contained in:
Alan Cox 2002-12-28 19:03:54 +00:00
parent c8029eccc0
commit a623fedef7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=108351
1 changed files with 4 additions and 6 deletions
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10
sys/vm/vm_kern.c
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@ -354,9 +354,9 @@ kmem_malloc(map, size, flags)
*/
if ((flags & (M_NOWAIT|M_USE_RESERVE)) == M_NOWAIT)
pflags = VM_ALLOC_INTERRUPT;
pflags = VM_ALLOC_INTERRUPT | VM_ALLOC_WIRED;
else
pflags = VM_ALLOC_SYSTEM;
pflags = VM_ALLOC_SYSTEM | VM_ALLOC_WIRED;
if (flags & M_ZERO)
pflags |= VM_ALLOC_ZERO;
@ -391,6 +391,7 @@ kmem_malloc(map, size, flags)
m = vm_page_lookup(kmem_object,
OFF_TO_IDX(offset + i));
vm_page_lock_queues();
vm_page_unwire(m, 0);
vm_page_free(m);
vm_page_unlock_queues();
}
@ -431,16 +432,13 @@ kmem_malloc(map, size, flags)
vm_object_lock(kmem_object);
m = vm_page_lookup(kmem_object, OFF_TO_IDX(offset + i));
vm_object_unlock(kmem_object);
vm_page_lock_queues();
vm_page_wire(m);
vm_page_wakeup(m);
vm_page_unlock_queues();
/*
* Because this is kernel_pmap, this call will not block.
*/
pmap_enter(kernel_pmap, addr + i, m, VM_PROT_ALL, 1);
vm_page_lock_queues();
vm_page_flag_set(m, PG_WRITEABLE | PG_REFERENCED);
vm_page_wakeup(m);
vm_page_unlock_queues();
}
vm_map_unlock(map);