X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Finclude%2Fobd_cksum.h;h=029d1a7275cff22b45308417167f55f574bb4840;hp=8234d0b650aa96d085f6d9bdc47a071c4b5216bc;hb=5e9059e08aec6fb36de6788465978de0e962b956;hpb=e4f3f47f04c762770bc36c1e3fa7e92e94a36704

diff --git a/lustre/include/obd_cksum.h b/lustre/include/obd_cksum.h
index 8234d0b..029d1a7 100644
--- a/lustre/include/obd_cksum.h
+++ b/lustre/include/obd_cksum.h
@@ -121,6 +121,13 @@ enum cksum_types obd_cksum_type_select(const char *obd_name,
 	if (preferred & cksum_types)
 		return preferred;
 
+	/*
+	 * Server reporting a single T10 checksum type
+	 * means the target actually supports T10-PI.
+	 */
+	if (hweight32(cksum_types & OBD_CKSUM_T10_ALL) == 1)
+		return cksum_types & OBD_CKSUM_T10_ALL;
+
 	flag = obd_cksum_type_pack(obd_name, cksum_types);
 
 	return obd_cksum_type_unpack(flag);