Tidy up the comment at the head of vm_page_alloc, and mention that the

returned page has the flag VPO_BUSY set.

1 files changed, 8 insertions, 6 deletions

diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c
index cde1387..8bce072 100644
--- a/sys/vm/vm_page.c
+++ b/sys/vm/vm_page.c
@@ -1286,8 +1286,9 @@ vm_page_cache_transfer(vm_object_t orig_object, vm_pindex_t offidxstart,
 /*
  *	vm_page_alloc:
  *
- *	Allocate and return a memory cell associated
- *	with this VM object/offset pair.
+ *	Allocate and return a page that is associated with the specified
+ *	object and offset pair.  By default, this page has the flag VPO_BUSY
+ *	set.
  *
  *	The caller must always specify an allocation class.
  *
@@ -1297,13 +1298,14 @@ vm_page_cache_transfer(vm_object_t orig_object, vm_pindex_t offidxstart,
  *	VM_ALLOC_INTERRUPT	interrupt time request
  *
  *	optional allocation flags:
- *	VM_ALLOC_ZERO		prefer a zeroed page
- *	VM_ALLOC_WIRED		wire the allocated page
- *	VM_ALLOC_NOOBJ		page is not associated with a vm object
- *	VM_ALLOC_NOBUSY		do not set the page busy
  *	VM_ALLOC_IFCACHED	return page only if it is cached
  *	VM_ALLOC_IFNOTCACHED	return NULL, do not reactivate if the page
  *				is cached
+ *	VM_ALLOC_NOBUSY		do not set the flag VPO_BUSY on the page
+ *	VM_ALLOC_NOOBJ		page is not associated with an object and
+ *				should not have the flag VPO_BUSY set
+ *	VM_ALLOC_WIRED		wire the allocated page
+ *	VM_ALLOC_ZERO		prefer a zeroed page
  *
  *	This routine may not sleep.
  */