https://bugzilla.kernel.org/show_bug.cgi?id=14830





--- Comment #25 from Jan Kara <jack@suse.cz>  2010-04-06 16:46:52 ---
As I'm reading through wb_writeback, it could happen that the flushing thread
gets stuck in background flushing and thus we never gets to processing the work
for sync(1) and thus sync(1) never finishes. The attached patch should fix
that.
Eric, could you please test whether this patch together with the patch from
comment 18 fixes your testcase?

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