Re: Machine unresponsive with cache_lock: blocked on... message

[Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>]

:I just got a new crash.
:
:The system was running DragonFly v2.5.1.902.g333f4-DEVELOPMENT from the 25th.
:
:There were these messages on the console:
:
:Warning: pmap_interlock 00010003
:Warning: pmap_interlock 00010003
:
:No cache_lock stuff this time.

    It looks like a deadlock between the VM system and HAMMER due to
    kmalloc() blocking during a low memory situation.  Your system
    was paging heavily at the time and was low on free memory.

    I have committed a change to master which should fix this particular
    issue.

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>