[LU-11919] cl_max_dirty_pages not zeroed on startup

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.13.0, Lustre 2.12.1
• Severity: 3
• Assignee: Patrick Farrell (Inactive)
• Reporter: Patrick Farrell (Inactive)

Description

cl_dirty_max_pages (the internal representation of max_dirty_mb) is not zeroed at initialization.  The function client_adjust_max_dirty is called, but it only sets it if the value is <= 0, which will be true most of the time for random memory...  But not all of the time.

So sometimes cl_max_dirty_pages ends up at some random positive value.  Easy fix.