[09/29] lustre: uapi: add mdt_hash_name

Commit Message

James Simmons April 25, 2021, 8:08 p.m. UTC

From: Yang Sheng <[e-mail]>

Add mdt_hash_name to map LMV_HASH_NAME_* to a string. Will be
used to enhance debugging information.

WC-bug-id: https://jira.whamcloud.com/browse/LU-11776
Lustre-commit: 00141b1a746d4733 ("LU-11776 utils: add support lfs find with mdt hash flag")
Signed-off-by: Yang Sheng <[e-mail]>
Reviewed-on: https://review.whamcloud.com/39340
Reviewed-by: James Simmons <[e-mail]>
Reviewed-by: Lai Siyao <[e-mail]>
Reviewed-by: Oleg Drokin <[e-mail]>
Signed-off-by: James Simmons <[e-mail]>
---
 include/uapi/linux/lustre/lustre_user.h | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

Patch

diff --git a/include/uapi/linux/lustre/lustre_user.h b/include/uapi/linux/lustre/lustre_user.h
index 7d4a9e9..acc0eaf 100644
--- a/include/uapi/linux/lustre/lustre_user.h
+++ b/include/uapi/linux/lustre/lustre_user.h
@@ -693,11 +693,14 @@  enum lmv_hash_type {
 	LMV_HASH_TYPE_MAX,
 };
 
-#define LMV_HASH_TYPE_DEFAULT LMV_HASH_TYPE_FNV_1A_64
+static __attribute__((unused)) const char *mdt_hash_name[] = {
+	"none",
+	"all_char",
+	"fnv_1a_64",
+	"crush",
+};
 
-#define LMV_HASH_NAME_ALL_CHARS	"all_char"
-#define LMV_HASH_NAME_FNV_1A_64	"fnv_1a_64"
-#define LMV_HASH_NAME_CRUSH	"crush"
+#define LMV_HASH_TYPE_DEFAULT LMV_HASH_TYPE_FNV_1A_64
 
 /* Right now only the lower part(0-16bits) of lmv_hash_type is being used,
  * and the higher part will be the flag to indicate the status of object,