Date: Thu, 27 Oct 2011 17:29:19 +0000 (UTC) From: Alan Cox <alc@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r226848 - head/sys/vm Message-ID: <201110271729.p9RHTJUL017229@svn.freebsd.org>
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Author: alc Date: Thu Oct 27 17:29:19 2011 New Revision: 226848 URL: http://svn.freebsd.org/changeset/base/226848 Log: Tidy up the comment at the head of vm_page_alloc, and mention that the returned page has the flag VPO_BUSY set. Modified: head/sys/vm/vm_page.c Modified: head/sys/vm/vm_page.c ============================================================================== --- head/sys/vm/vm_page.c Thu Oct 27 17:21:41 2011 (r226847) +++ head/sys/vm/vm_page.c Thu Oct 27 17:29:19 2011 (r226848) @@ -1286,8 +1286,9 @@ vm_page_cache_transfer(vm_object_t orig_ /* * 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_ * 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. */
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