From: Avi Kivity <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>
diff --git a/external-module-compat-comm.h b/external-module-compat-comm.h
index c3dcde6..6bd1561 100644
--- a/external-module-compat-comm.h
+++ b/external-module-compat-comm.h
@@ -905,3 +905,40 @@ struct trace_print_flags {
#define alloc_pages_exact_node alloc_pages_node
#endif
+
+/* eventfd accessors, new in 2.6.31 */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,31)
+
+#include <linux/eventfd.h>
+#include <linux/fs.h>
+
+struct eventfd_ctx;
+
+static inline struct eventfd_ctx *eventfd_ctx_get(struct eventfd_ctx *ctx)
+{
+ struct file *filp = (struct file *)ctx;
+
+ get_file(filp);
+ return ctx;
+}
+
+static inline void eventfd_ctx_put(struct eventfd_ctx *ctx)
+{
+ struct file *filp = (struct file *)ctx;
+
+ fput(filp);
+}
+
+static inline struct eventfd_ctx *eventfd_ctx_fdget(int fd)
+{
+ struct file *filp = eventfd_fget(fd);
+
+ return (struct eventfd_ctx *)filp;
+}
+
+static inline struct eventfd_ctx *eventfd_ctx_fileget(struct file *file)
+{
+ return (struct eventfd_ctx *)file;
+}
+
+#endif
--
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