mm, compaction: rename COMPACT_PARTIAL to COMPACT_SUCCESS

[cascardo/linux.git] / include / linux / t10-pi.h

diff --git a/include/linux/t10-pi.h b/include/linux/t10-pi.h
index dd8de82..9fba9dd 100644 (file)
--- a/include/linux/t10-pi.h
+++ b/include/linux/t10-pi.h
@@ -4,6 +4,26 @@
 #include <linux/types.h>
 #include <linux/blkdev.h>
 
+/*
+ * A T10 PI-capable target device can be formatted with different
+ * protection schemes. Currently 0 through 3 are defined:
+ *
+ * Type 0 is regular (unprotected) I/O
+ *
+ * Type 1 defines the contents of the guard and reference tags
+ *
+ * Type 2 defines the contents of the guard and reference tags and
+ * uses 32-byte commands to seed the latter
+ *
+ * Type 3 defines the contents of the guard tag only
+ */
+enum t10_dif_type {
+       T10_PI_TYPE0_PROTECTION = 0x0,
+       T10_PI_TYPE1_PROTECTION = 0x1,
+       T10_PI_TYPE2_PROTECTION = 0x2,
+       T10_PI_TYPE3_PROTECTION = 0x3,
+};
+
 /*
  * T10 Protection Information tuple.
  */