Messages in this thread | | | Date | Sun, 02 Jun 2002 00:38:58 -0700 | From | Andrew Morton <> | Subject | Re: [patch 1/16] unplugging fix |
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Andrew Morton wrote: > > There's a plugging bug in 2.5.19. Once you start pushing several disks > hard, the new unplug code gets confused and queues are left in plugged > state, but not on the plug list. They never get unplugged and the > machine dies mysteriously. >
This patch didn't fix it. It made it tons better, but I again have a wedged box. Same symptoms - against IDE this time.
blk_plug_list is empty. queue_flags=0x03. Interestingly, q->plug_list is non-empty, non-zero, both list members pointing at a list which isn't either itself or blk_plug_list.
I note that the code isn't taking queues off the plug list when the queue is destroyed. Guess that doesn't matter - we never destroy a plugged queue...
This one is killing me.
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