For the exclusive reference page, the non-atomic operations is enough,
so replace them to non-atomic operations.
Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
---
include/linux/page-flags.h | 2 ++
mm/memory.c | 4 ++--
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index fbbb841a9346..ec039dde5e4b 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -401,6 +401,8 @@ static __always_inline int PageSwapCache(struct page *page)
}
SETPAGEFLAG(SwapCache, swapcache, PF_NO_TAIL)
CLEARPAGEFLAG(SwapCache, swapcache, PF_NO_TAIL)
+__SETPAGEFLAG(SwapCache, swapcache, PF_NO_TAIL)
+__CLEARPAGEFLAG(SwapCache, swapcache, PF_NO_TAIL)
#else
PAGEFLAG_FALSE(SwapCache)
#endif
diff --git a/mm/memory.c b/mm/memory.c
index 2d267ef6621a..02dd62da26e0 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3128,10 +3128,10 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)
set_page_private(page, entry.val);
/* Tell memcg to use swap ownership records */
- SetPageSwapCache(page);
+ __SetPageSwapCache(page);
err = mem_cgroup_charge(page, vma->vm_mm,
GFP_KERNEL);
- ClearPageSwapCache(page);
+ __ClearPageSwapCache(page);
if (err) {
ret = VM_FAULT_OOM;
goto out_page;
--
2.20.1
