LU-3538 dne: Commit-on-Sharing for DNE

[fs/lustre-release.git] / lustre / include / lustre_dlm_flags.h

diff --git a/lustre/include/lustre_dlm_flags.h b/lustre/include/lustre_dlm_flags.h
index 5f7206d..9b7037e 100644 (file)
--- a/lustre/include/lustre_dlm_flags.h
+++ b/lustre/include/lustre_dlm_flags.h
@@ -129,6 +129,15 @@
 #define ldlm_set_cancel_on_block(_l)    LDLM_SET_FLAG((  _l), 1ULL << 23)
 #define ldlm_clear_cancel_on_block(_l)  LDLM_CLEAR_FLAG((_l), 1ULL << 23)
 
+/** Flag whether a lock is enqueued from a distributed transaction, and the
+ *  requesting lock mode is PW/EX, if so, it will check compatibility with COS
+ *  locks, and different from original COS semantic, transactions from the same
+ *  client is also treated as lock conflict. */
+#define LDLM_FL_COS_INCOMPAT           0x0000000001000000ULL /* bit  24 */
+#define ldlm_is_cos_incompat(_l)       LDLM_TEST_FLAG((_l), 1ULL << 24)
+#define ldlm_set_cos_incompat(_l)      LDLM_SET_FLAG((_l), 1ULL << 24)
+#define ldlm_clear_cos_incompat(_l)    LDLM_CLEAR_FLAG((_l), 1ULL << 24)
+
 /**
  * measure lock contention and return -EUSERS if locking contention is high */
 #define LDLM_FL_DENY_ON_CONTENTION        0x0000000040000000ULL // bit  30
@@ -345,6 +354,14 @@
 /** Flag whether a lock is found on server for re-sent RPC. */
 #define LDLM_FL_RESENT                   0x0100000000000000ULL // bit  56
 
+/** Flag whether Commit-on-Sharing is enabled, if LDLM_FL_COS_INCOMPAT is set
+ *  this flag may not be set because once the former is set this flag won't be
+ *  checked, and for cross-MDT lock COS_INCOMPAT is always set but ast handle is
+ *  in ldlm context which doesn't know whether COS is enabled or not. */
+#define LDLM_FL_COS_ENABLED              0x0200000000000000ULL /* bit  57 */
+#define ldlm_is_cos_enabled(_l)          LDLM_TEST_FLAG((_l), 1ULL << 57)
+#define ldlm_set_cos_enabled(_l)         LDLM_SET_FLAG((_l), 1ULL << 57)
+
 /** l_flags bits marked as "ast" bits */
 #define LDLM_FL_AST_MASK                (LDLM_FL_FLOCK_DEADLOCK                |\
                                         LDLM_FL_AST_DISCARD_DATA)