LU-11025 dne: introduce new directory hash type: "crush"

[fs/lustre-release.git] / lustre / include / uapi / linux / lustre / lustre_user.h

diff --git a/lustre/include/uapi/linux/lustre/lustre_user.h b/lustre/include/uapi/linux/lustre/lustre_user.h
index 3a8ce82..602f746 100644 (file)
--- a/lustre/include/uapi/linux/lustre/lustre_user.h
+++ b/lustre/include/uapi/linux/lustre/lustre_user.h
@@ -990,6 +990,7 @@ enum lmv_hash_type {
        LMV_HASH_TYPE_UNKNOWN   = 0,    /* 0 is reserved for testing purpose */
        LMV_HASH_TYPE_ALL_CHARS = 1,
        LMV_HASH_TYPE_FNV_1A_64 = 2,
+       LMV_HASH_TYPE_CRUSH     = 3,
        LMV_HASH_TYPE_MAX,
 };
 
@@ -997,9 +998,7 @@ enum lmv_hash_type {
 
 #define LMV_HASH_NAME_ALL_CHARS        "all_char"
 #define LMV_HASH_NAME_FNV_1A_64        "fnv_1a_64"
-
-/* not real hash type, but exposed to user as "space" hash type */
-#define LMV_HASH_NAME_SPACE    "space"
+#define LMV_HASH_NAME_CRUSH    "crush"
 
 /* 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,
@@ -1010,16 +1009,17 @@ enum lmv_hash_type {
 static inline bool lmv_is_known_hash_type(__u32 type)
 {
        return (type & LMV_HASH_TYPE_MASK) == LMV_HASH_TYPE_FNV_1A_64 ||
-              (type & LMV_HASH_TYPE_MASK) == LMV_HASH_TYPE_ALL_CHARS;
+              (type & LMV_HASH_TYPE_MASK) == LMV_HASH_TYPE_ALL_CHARS ||
+              (type & LMV_HASH_TYPE_MASK) == LMV_HASH_TYPE_CRUSH;
 }
 
 /* The striped directory has ever lost its master LMV EA, then LFSCK
  * re-generated it. This flag is used to indicate such case. It is an
  * on-disk flag. */
-#define LMV_HASH_FLAG_LOST_LMV 0x10000000
+#define LMV_HASH_FLAG_LOST_LMV         0x10000000
 
-#define LMV_HASH_FLAG_BAD_TYPE 0x20000000
-#define LMV_HASH_FLAG_MIGRATION        0x80000000
+#define LMV_HASH_FLAG_BAD_TYPE         0x20000000
+#define LMV_HASH_FLAG_MIGRATION                0x80000000
 
 extern char *mdt_hash_name[LMV_HASH_TYPE_MAX];