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An unexpected perf feature
LWN.net Weekly Edition for May 16, 2013
A look at the PyPy 2.0 release
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LWN.net Weekly Edition for May 9, 2013
Ext4 data corruption trouble [Updated]
Posted Oct 25, 2012 22:16 UTC (Thu) by butlerm (subscriber, #13312)
It might be helpful to have a way to put all filesystems in a read only state, for the benefit of shutdown code that only requires (file level) read access, such as code to shutdown RAID devices.
A more general problem is that you might have loopback mounts and nested block devices, so what you really need is a combined operation that does the topological sort and quiesces filesystems and block devices in reverse stacking order.
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