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author | Alan Cox <alc@FreeBSD.org> | 2011-10-27 17:29:19 +0000 |
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committer | Alan Cox <alc@FreeBSD.org> | 2011-10-27 17:29:19 +0000 |
commit | 125b695b6e27c5b66383712a3e277974acd2b6ef (patch) | |
tree | 53d9ddbc13238dc8d910ea684146ea2d60fe3e08 /sys/vm | |
parent | ad033677ea97003328fb2e92dff91f398aac415a (diff) | |
download | src-125b695b6e27c5b66383712a3e277974acd2b6ef.tar.gz src-125b695b6e27c5b66383712a3e277974acd2b6ef.zip |
Tidy up the comment at the head of vm_page_alloc, and mention that the
returned page has the flag VPO_BUSY set.
Notes
Notes:
svn path=/head/; revision=226848
Diffstat (limited to 'sys/vm')
-rw-r--r-- | sys/vm/vm_page.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c index cde138760c0f..8bce0723745c 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. */ |