linux-ext4 - [Bug 14830] When other IO is running sync times go to 10 to 20 minutes

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Message-Id: <201004061647.o36Gl1Vq019063@demeter.kernel.org>
Date:	Tue, 6 Apr 2010 16:47:01 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 14830] When other IO is running sync times go to 10 to 20
 minutes

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





--- Comment #25 from Jan Kara <jack@...e.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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