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Examples

Examples

Posted May 23, 2010 15:26 UTC (Sun) by corbet (editor, #1)
In reply to: Canonical Goes It Alone with Unity by rahulsundaram
Parent article: Canonical Goes It Alone with Unity

TUX is a clear example of a kernel feature shipped by Red Hat which was never upstreamed - or even attempted to upstream. I also had fun in the first revision of the driver book because there were RH-specific API features in their kernel.

Whether competition has anything to do with any perceived changes is not clear to me, though. I suspect it has more to do with both the company and the communities it works in growing up.


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Examples

Posted May 24, 2010 18:30 UTC (Mon) by foom (subscriber, #14868) [Link]

A personal anecdote:

RH's non-upstreamed tux patches caused me pain recently(ish). Turns out TUX added a flag to the open syscall named O_ATOMICOPEN. It used the next available O_ flag value after those used in upstream kernels. That flag was not upstreamed. Upstream then added a flag to open called O_CLOEXEC. They (of course) also used hte next available flag value.

So, new binaries which attempted to use O_CLOEXEC (even when they attempted to test for its existence before using it) would fail badly when it returned some completely unexpected random error value...

https://bugzilla.redhat.com/show_bug.cgi?id=313681


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