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-rw-r--r--include/linux/errseq.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/errseq.h b/include/linux/errseq.h
new file mode 100644
index 000000000000..9e0d444ac88d
--- /dev/null
+++ b/include/linux/errseq.h
@@ -0,0 +1,19 @@
+#ifndef _LINUX_ERRSEQ_H
+#define _LINUX_ERRSEQ_H
+
+/* See lib/errseq.c for more info */
+
+typedef u32 errseq_t;
+
+errseq_t __errseq_set(errseq_t *eseq, int err);
+static inline void errseq_set(errseq_t *eseq, int err)
+{
+ /* Optimize for the common case of no error */
+ if (unlikely(err))
+ __errseq_set(eseq, err);
+}
+
+errseq_t errseq_sample(errseq_t *eseq);
+int errseq_check(errseq_t *eseq, errseq_t since);
+int errseq_check_and_advance(errseq_t *eseq, errseq_t *since);
+#endif