Messages in this thread | | | Date | Tue, 6 Jan 2015 12:54:43 -0500 (EST) | From | Mikulas Patocka <> | Subject | Re: Dirty pages underflow on 3.14.23 |
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On Tue, 6 Jan 2015, Johannes Weiner wrote:
> > The bug probably happened during git pull or apt-get update, though one > > can't be sure that these commands caused it. > > > > I see that 3.14.24 containes some fix for underflow (commit > > 6619741f17f541113a02c30f22a9ca22e32c9546, upstream commit > > abe5f972912d086c080be4bde67750630b6fb38b), but it doesn't seem that that > > commit fixes this condition. If you have a commit that could fix this, say > > it. > > That's an unrelated counter, but there is a known dirty underflow > problem that was addressed in 87a7e00b206a ("mm: protect > set_page_dirty() from ongoing truncation"). It should make it into > the stable kernels in the near future. Can you reproduce this issue? > > Thanks, > Johannes
I can't reprodce it. It happened just once.
That patch is supposed to fix an occasional underflow by a single page - while my meminfo showed underflow by 22952KiB (5738 pages).
Mikulas
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