only setup multiqueue scheduler for RHEL greater than 7.6

Signed-off-by: YangKeao <[email protected]>

Author: YangKeao

README.md

@@ -50,7 +50,7 @@ Jobs: 16 (f=16): [r(16)][10.8%][r=55.5MiB/s,w=0KiB/s][r=14.2k,w=0 IOPS][eta 01m:
 
 #### Note
 
-1. multi-queue scheduler is only supported on the kernel newer than 4.0, or the rhel kernel released after RHEL 7.2
+1. multi-queue scheduler registration is only supported on the kernel newer than 4.0, or the rhel kernel released after RHEL 7.6
 
 ## Warning
 

driver/ioem.c

@@ -20,7 +20,7 @@
 
 static void ioem_error_injection(struct request* rq);
 
-#define IOEM_MQ_ENABLED ((LINUX_VERSION_CODE >= KERNEL_VERSION(4, 0, 0)) || (defined RHEL_MAJOR && RHEL_MAJOR >= 7 && defined RHEL_MINOR && RHEL_MINOR >= 2))
+#define IOEM_MQ_ENABLED ((LINUX_VERSION_CODE >= KERNEL_VERSION(4, 0, 0)) || (defined RHEL_MAJOR && RHEL_MAJOR >= 7 && defined RHEL_MINOR && RHEL_MINOR >= 6))
 
 /**
  * struct ioem_data - the main data of ioem