[LU-3283] check result of ll_prep_md_op_data() using IS_ERR()

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.4.1, Lustre 2.5.0
• Affects Version/s: Lustre 2.4.0
• Labels: llite
• Severity: 3
• Assignee: John Hammond
• Reporter: John Hammond

Description

In ll_file_ioctl() and ll_swap_layouts() check the result of the famous ll_prep_md_op_data() using IS_ERR().