lib: percpu_counter_init error handling

alloc_percpu can fail, propagate that error.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/include/linux/percpu_counter.h b/include/linux/percpu_counter.h
index 21e054595bcb..f7ecd38d7e9c 100644
--- a/include/linux/percpu_counter.h
+++ b/include/linux/percpu_counter.h
@@ -30,7 +30,7 @@ struct percpu_counter {
 #define FBC_BATCH       (NR_CPUS*4)
 #endif
 
-void percpu_counter_init(struct percpu_counter *fbc, s64 amount);
+int percpu_counter_init(struct percpu_counter *fbc, s64 amount);
 void percpu_counter_destroy(struct percpu_counter *fbc);
 void percpu_counter_set(struct percpu_counter *fbc, s64 amount);
 void __percpu_counter_add(struct percpu_counter *fbc, s64 amount, s32 batch);
@@ -78,9 +78,10 @@ struct percpu_counter {
         s64 count;
 };
 
-static inline void percpu_counter_init(struct percpu_counter *fbc, s64 amount)
+static inline int percpu_counter_init(struct percpu_counter *fbc, s64 amount)
 {
         fbc->count = amount;
+        return 0;
 }
 
 static inline void percpu_counter_destroy(struct percpu_counter *fbc)