April 25, 2019

Linux 4.1 Goes Long Term for Support

  • June 25, 2015
  • By Sean Michael Kerner

Linux 4.1 was officially released by Linus Torvalds on June 21, marking the first major update to the Linux 4.0 kernel which first debuted in April.

In his release announcement Torvalds wrote:


"So after a *very* quiet week after the 4.1-rc8 release, the final 4.1 release is now out.

I'm not sure if it was quiet because there really were no problems (knock wood), or if people decided to be considerate of my vacation, but whatever the reason, I appreciate it. It's not like the 4.1 release cycle was particularly painful, and let's hope that the extra week of letting it sit makes for a great release. Which wouldn't be a bad thing, considering that 4.1 will also be a LTS release.''


As always there are driver and performance updates in the new kernel. Of particular note are Intel performance improvements for Bay/Cherry Trail hardware.

EXT4 also gets a major boost with support for a file encryption flag.

Looking beyond existing capabilities, there is a new filesystem in Linux 4.1 called TraceFS. Linux kernel developer Steven Rostedt wrote:

There has been complaints that tracing is tied too much to debugfs, as there are systems that would like to perform tracing, but do not mount debugfs for security reasons. That is because any subsystem may use debugfs for debugging, and these interfaces are not always tested for security.

Creating a new tracefs that the tracing directory will now be attached to allows system admins the ability to access the tracing directory without the need to mount debugfs.


Sean Michael Kerner is a senior editor at Linux Planet and InternetNews.com. Follow him on Twitter @TechJournalist

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