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SubjectRe: ext3 lockdep warning in 2.6.25-rc6
On Sat, 2008-03-22 at 10:37 -0400, Erez Zadok wrote:
> I was building a kernel using "make -j 4" inside a unionfs, mounted on top
> of ext3. The kernel is vanilla 2.6.25-rc6 plus unionfs patches. At some
> point I forced a cache flush using "echo 3 > /proc/sys/vm/drop_caches" and I
> got the lockdep warning below. Note that unionfs doesn't appear to be
> involved in this lockdep warning at all, so I suspect this is probably an
> issue between jbd and ext3 directly.

Known issue, drop_caches isn't production quality.

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