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

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

Browse Source 
returned page has the flag VPO_BUSY set.
This commit is contained in:
Alan Cox 2011-10-27 17:29:19 +00:00
parent ad033677ea
commit 125b695b6e
1 changed files with 8 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
sys/vm/vm_page.c
View File

@ -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.
*/