From: lkml@pengaru.com
To: linux-kernel@vger.kernel.org
Subject: bdi_min_ratio never shrinks, ultimately preventing valid setting of min_ratio
Date: Tue, 31 May 2011 19:28:54 -0500 [thread overview]
Message-ID: <20110601002854.GV5753@shells.gnugeneration.com> (raw)
mm/page-writeback.c
There is a static global bdi_min_ratio used for policing the setting of
per-bdi min_ratio's, to ensure the sum doesn't cross 100.
There is no place in this listing where the value is decremented by the
respective bdi's min_ratio when a bdi is torn down. This looks like a bug
to me, and I have a situation where I'm unable to set a min_ratio to 1
where the sum of /sys/class/bdi/*/min_ratio does not add up to 100, which
is what triggered this investigation.
Regards,
Vito Caputo
next reply other threads:[~2011-06-01 0:35 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-01 0:28 lkml [this message]
2011-06-02 11:43 ` bdi_min_ratio never shrinks, ultimately preventing valid setting of min_ratio Peter Zijlstra
2011-06-02 18:32 ` lkml
2011-06-02 21:25 ` Peter Zijlstra
2011-06-08 0:13 ` Andrew Morton
2011-06-08 9:25 ` Peter Zijlstra
2011-06-08 10:45 ` Peter Zijlstra
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