Messages in this thread |  | | Date | Sat, 22 Mar 2008 18:34:27 -0400 | From | Erez Zadok <> | Subject | Re: ext3 lockdep warning in 2.6.25-rc6 |
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In message <1206207527.6437.83.camel@lappy>, Peter Zijlstra writes: > 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.
Is this a general problem with drop_caches, or its interaction with ext3/jbd? If I get a similar lockdep warning with other file systems, should I bother to report this to the respective f/s maintainers?
Thanks, Erez.
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