[LU-13731] RHEL 8.2: VM_FAULT_RETRY is defined in mm_types.h instead of mm.h

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.14.0
• Affects Version/s: Lustre 2.14.0, Lustre 2.12.5
• Environment: RHEL 8.2
• Severity: 3
• Assignee: Jian Yu
• Reporter: Jian Yu

Description

In RHEL 8.2 kernel 4.18.0-193.6.3.el8_2, VM_FAULT_RETRY is defined in mm_types.h instead of mm.h. While in Lustre codes, mm_types.h is not included, which causes VM_FAULT_RETRY redefined to 0 in llite_internal.h and vvp_io_kernel_fault() output the following error message:

LustreError: 4176:0:(vvp_io.c:1222:vvp_io_kernel_fault()) unknown error in page fault 1024