Re: [PATCH 0/12] Per-bdi writeback flusher threads v7

From: Jens Axboe
Date: Tue May 26 2009 - 12:41:29 EST

On Tue, May 26 2009, Damien Wyart wrote:
> Hello,
> I have been playing with v7 since your sending and after a white (short
> on laptop, longer on desktop, a few hours), writeback doesn't seem to
> work anymore. Manual call to sync hangs (process in D state) and Dirty
> value in meminfo gets growing. As previous versions had been heavily
> tested, I guess there is some regression in v7.

Not good, the prime suspect is the sync notification stuff. I'll take a
look and get that fixed. You didn't happen to catch any sysrq-t back
traces or anything like that? Would be interesting to see where where
bdi-default and the bdi-* threads are stuck.

Can you send me your .config and a dmesg from a booted system? Any
kernel, doesn't have to be the writeback kernel.

Jens Axboe

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at