X-Git-Url: http://git.monstr.eu/?a=blobdiff_plain;f=fs%2Feventfd.c;h=e265b6dd4f345f55cea7775bdb08b938023711b7;hb=2760f5a14fe7aa466e38bbb92d0284fffc0e4da0;hp=df466ef81dddfa05c6e6b3f90eaf0a8a352b53a7;hpb=1e21b5c73912a516bb13aec0ff69205b0b33568f;p=linux-2.6-microblaze.git

diff --git a/fs/eventfd.c b/fs/eventfd.c
index df466ef81ddd..e265b6dd4f34 100644
--- a/fs/eventfd.c
+++ b/fs/eventfd.c
@@ -182,11 +182,14 @@ static __poll_t eventfd_poll(struct file *file, poll_table *wait)
 	return events;
 }
 
-static void eventfd_ctx_do_read(struct eventfd_ctx *ctx, __u64 *cnt)
+void eventfd_ctx_do_read(struct eventfd_ctx *ctx, __u64 *cnt)
 {
+	lockdep_assert_held(&ctx->wqh.lock);
+
 	*cnt = (ctx->flags & EFD_SEMAPHORE) ? 1 : ctx->count;
 	ctx->count -= *cnt;
 }
+EXPORT_SYMBOL_GPL(eventfd_ctx_do_read);
 
 /**
  * eventfd_ctx_remove_wait_queue - Read the current counter and removes wait queue.