diff options
Diffstat (limited to 'drivers/xen/unpopulated-alloc.c')
| -rw-r--r-- | drivers/xen/unpopulated-alloc.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/xen/unpopulated-alloc.c b/drivers/xen/unpopulated-alloc.c index 8c512ea550bb..7762c1bb23cb 100644 --- a/drivers/xen/unpopulated-alloc.c +++ b/drivers/xen/unpopulated-alloc.c @@ -12,7 +12,7 @@ #include <xen/xen.h> static DEFINE_MUTEX(list_lock); -static LIST_HEAD(page_list); +static struct page *page_list; static unsigned int list_count; static int fill_list(unsigned int nr_pages) @@ -84,7 +84,8 @@ static int fill_list(unsigned int nr_pages) struct page *pg = virt_to_page(vaddr + PAGE_SIZE * i); BUG_ON(!virt_addr_valid(vaddr + PAGE_SIZE * i)); - list_add(&pg->lru, &page_list); + pg->zone_device_data = page_list; + page_list = pg; list_count++; } @@ -118,12 +119,10 @@ int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages) } for (i = 0; i < nr_pages; i++) { - struct page *pg = list_first_entry_or_null(&page_list, - struct page, - lru); + struct page *pg = page_list; BUG_ON(!pg); - list_del(&pg->lru); + page_list = pg->zone_device_data; list_count--; pages[i] = pg; @@ -134,7 +133,8 @@ int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages) unsigned int j; for (j = 0; j <= i; j++) { - list_add(&pages[j]->lru, &page_list); + pages[j]->zone_device_data = page_list; + page_list = pages[j]; list_count++; } goto out; @@ -160,7 +160,8 @@ void xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages) mutex_lock(&list_lock); for (i = 0; i < nr_pages; i++) { - list_add(&pages[i]->lru, &page_list); + pages[i]->zone_device_data = page_list; + page_list = pages[i]; list_count++; } mutex_unlock(&list_lock); @@ -189,7 +190,8 @@ static int __init init(void) struct page *pg = pfn_to_page(xen_extra_mem[i].start_pfn + j); - list_add(&pg->lru, &page_list); + pg->zone_device_data = page_list; + page_list = pg; list_count++; } } |