[LU-523] No prepare_write for lockless IO

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Severity: 3
• Assignee: Jinshan Xiong (Inactive)
• Reporter: Jinshan Xiong (Inactive)

Description

For page unaligned write, CLIO does prepare_write even for lockless IO and then write them back, this will cause data corruption since some of data is not covered by lock.