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-rw-r--r--myisam/myisamdef.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/myisam/myisamdef.h b/myisam/myisamdef.h
index a65694dbd94..ad153d58b70 100644
--- a/myisam/myisamdef.h
+++ b/myisam/myisamdef.h
@@ -64,6 +64,7 @@ typedef struct st_mi_state_info
ulonglong auto_increment;
ulong process; /* process that updated table last */
ulong unique; /* Unique number for this process */
+ ulong update_count; /* Updated for each write lock */
ulong status;
my_off_t *key_root; /* Start of key trees */
my_off_t *key_del; /* delete links for trees */