diff options
Diffstat (limited to 'vm/vm_page.h')
| -rw-r--r-- | vm/vm_page.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/vm/vm_page.h b/vm/vm_page.h index 4e870d82..6f4f3c22 100644 --- a/vm/vm_page.h +++ b/vm/vm_page.h @@ -162,8 +162,6 @@ extern queue_head_t vm_page_queue_inactive; /* inactive memory queue */ extern -int vm_page_free_count; /* How many pages are free? */ -extern int vm_page_fictitious_count;/* How many fictitious pages are free? */ extern int vm_page_active_count; /* How many pages are active? */ @@ -483,12 +481,16 @@ struct vm_page * vm_page_lookup_pa(phys_addr_t pa); * * The selector is used to determine the segments from which allocation can * be attempted. + * + * This function should only be used by the vm_resident module. */ struct vm_page * vm_page_alloc_pa(unsigned int order, unsigned int selector, unsigned short type); /* * Release a block of 2^order physical pages. + * + * This function should only be used by the vm_resident module. */ void vm_page_free_pa(struct vm_page *page, unsigned int order); @@ -507,4 +509,12 @@ void vm_page_info_all(void); */ phys_addr_t vm_page_mem_size(void); +/* + * Return the amount of free (unused) pages. + * + * XXX This currently relies on the kernel being non preemptible and + * uniprocessor. + */ +unsigned long vm_page_mem_free(void); + #endif /* _VM_VM_PAGE_H_ */ |