mm: memory: use folio_throttle_swaprate() in do_cow_fault()

Directly use folio_throttle_swaprate() instead of
cgroup_throttle_swaprate().

Link: https://lkml.kernel.org/r/20230302115835.105364-7-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/memory.c b/mm/memory.c
index b647488..fdc9038 100644 (file)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -4518,7 +4518,7 @@ static vm_fault_t do_cow_fault(struct vm_fault *vmf)
                put_page(vmf->cow_page);
                return VM_FAULT_OOM;
        }
-       cgroup_throttle_swaprate(vmf->cow_page, GFP_KERNEL);
+       folio_throttle_swaprate(page_folio(vmf->cow_page), GFP_KERNEL);
 
        ret = __do_fault(vmf);
        if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE | VM_FAULT_RETRY)))