[dm-devel] [Patch] dm-mpath.c: use schedule_work()

[Mike Christie]

Joe Thornber wrote:

> dm-mpath.c: Use schedule_work() rather than queue_work().  Having our
> own thread for mpath seems like overkill.

When I originally looked at workqueues I also thought it was overkill 
becuase failures should be a rare case. However, becuase dispatch_failed 
(__make_request) can sleep I thought there might tbe problems if someone 
is doing software iSCSI and dm multipath. It looks like some network 
drivers are using the default workqueues to schedule work for handling 
timeouts, so I am not sure what is going to happen if we block, but the 
network connections are timing out around us.

Could this be a problem?

Mike