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-rw-r--r--include/linux/page_cgroup.h7
-rw-r--r--mm/memcontrol.c2
2 files changed, 6 insertions, 3 deletions
diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h
index 5bb13b3db84d..b02195dfc1b0 100644
--- a/include/linux/page_cgroup.h
+++ b/include/linux/page_cgroup.h
@@ -59,8 +59,6 @@ static inline void ClearPageCgroup##uname(struct page_cgroup *pc) \
59static inline int TestClearPageCgroup##uname(struct page_cgroup *pc) \ 59static inline int TestClearPageCgroup##uname(struct page_cgroup *pc) \
60 { return test_and_clear_bit(PCG_##lname, &pc->flags); } 60 { return test_and_clear_bit(PCG_##lname, &pc->flags); }
61 61
62TESTPCGFLAG(Locked, LOCK)
63
64/* Cache flag is set only once (at allocation) */ 62/* Cache flag is set only once (at allocation) */
65TESTPCGFLAG(Cache, CACHE) 63TESTPCGFLAG(Cache, CACHE)
66CLEARPCGFLAG(Cache, CACHE) 64CLEARPCGFLAG(Cache, CACHE)
@@ -104,6 +102,11 @@ static inline void unlock_page_cgroup(struct page_cgroup *pc)
104 bit_spin_unlock(PCG_LOCK, &pc->flags); 102 bit_spin_unlock(PCG_LOCK, &pc->flags);
105} 103}
106 104
105static inline int page_is_cgroup_locked(struct page_cgroup *pc)
106{
107 return bit_spin_is_locked(PCG_LOCK, &pc->flags);
108}
109
107#else /* CONFIG_CGROUP_MEM_RES_CTLR */ 110#else /* CONFIG_CGROUP_MEM_RES_CTLR */
108struct page_cgroup; 111struct page_cgroup;
109 112
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 2efa8ea07ff7..62d1880f6992 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2152,7 +2152,7 @@ static void __mem_cgroup_move_account(struct page_cgroup *pc,
2152{ 2152{
2153 VM_BUG_ON(from == to); 2153 VM_BUG_ON(from == to);
2154 VM_BUG_ON(PageLRU(pc->page)); 2154 VM_BUG_ON(PageLRU(pc->page));
2155 VM_BUG_ON(!PageCgroupLocked(pc)); 2155 VM_BUG_ON(!page_is_cgroup_locked(pc));
2156 VM_BUG_ON(!PageCgroupUsed(pc)); 2156 VM_BUG_ON(!PageCgroupUsed(pc));
2157 VM_BUG_ON(pc->mem_cgroup != from); 2157 VM_BUG_ON(pc->mem_cgroup != from);
2158 2158