1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
2 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
4 <html xmlns="http://www.w3.org/1999/xhtml">
7 <title>What's new in the Linux kernel - DebConf 2014</title>
9 <meta name="generator" content="S5" />
10 <meta name="version" content="S5 1.1" />
11 <meta name="author" content="Ben Hutchings" />
12 <!-- configuration parameters -->
13 <meta name="defaultView" content="slideshow" />
14 <meta name="controlVis" content="hidden" />
15 <!-- style sheet links -->
16 <link rel="stylesheet" href="s5-blank/ui/default/slides.css" type="text/css" media="projection" id="slideProj" />
17 <link rel="stylesheet" href="s5-blank/ui/default/outline.css" type="text/css" media="screen" id="outlineStyle" />
18 <link rel="stylesheet" href="s5-blank/ui/default/print.css" type="text/css" media="print" id="slidePrint" />
19 <link rel="stylesheet" href="s5-blank/ui/default/opera.css" type="text/css" media="projection" id="operaFix" />
20 <style type="text/css">
21 .logo { position: absolute; right: 0; top: 0; height: 100% }
22 table { border-collapse: collapse }
23 th { border-bottom: 2pt solid black }
24 th, td { padding: 0 6pt }
25 .package { font-family: monospace }
26 var { font-family: sans }
28 <style type="text/css" media="print">
29 .slide { page-break-after: always }
32 <script src="s5-blank/ui/default/slides.js" type="text/javascript"></script>
37 <div id="controls"><!-- DO NOT EDIT --></div>
38 <div id="currentSlide"><!-- DO NOT EDIT --></div>
43 <h2>What's new in the Linux kernel</h2>
48 <div class="presentation">
51 <h1>What's new in the Linux kernel</h1>
52 <object data="tux-debian.svg" width="35%" align="right"></object>
53 <h2>and what's missing in Debian</h2>
54 <h3>Ben Hutchings</h3>
58 <h1>Ben Hutchings</h1>
61 Professional software engineer by day, Debian developer by night
62 (or sometimes the other way round)
65 Regular Linux contributor in both roles since 2008
68 Working on various drivers and kernel code in my day job
71 Debian kernel team member, now doing most of the unstable
72 maintenance aside from ports
75 Maintaining Linux 3.2.<var>y</var> stable update series on
82 <h1>Linux releases early and often</h1>
83 <ul class="incremental">
85 Linux is released about 5 times a year (plus stable updates
89 ...though some features aren't ready to use when they firat
95 Since my talk last year, Linus has made 6 releases (3.11-3.16)
98 Good news: we have lots of new kernel features in testing/unstable
101 Bad news: some of them won't really work without new userland
107 <h1>Recap of last year's features (1)</h1>
108 <ul class="incremental">
110 Team device driver: userland package (libteam) was uploaded in
114 Transcendent memory: frontswap, zswap and Xen tmem will be
115 enabled in next kernel upload
118 New KMS drivers: should all work with current Xorg drivers
121 Module signing: still not enabled, but probably will be if we
128 <h1>Recap of last year's features (2)</h1>
129 <ul class="incremental">
131 More support for discard: still not enabled at install time
132 (<a href="https://bugs.debian.org/690977">#690977</a>)
135 More support for containers: XFS was fixed, and user namespaces
139 bcache: userland package (bcache-tools) still not quite ready
140 (<a href="https://bugs.debian.org/708132">#708132</a>)
143 ARMv7 multiplatform: d-i works on <em>some</em> platforms but
144 I'm still not sure which. Some progress on GPU drivers, but not
151 <h1>Unnamed temporary files [3.11]</h1>
154 Open directory with option <tt>O_TMPFILE</tt> to create an
155 unnamed temporary file on that filesystem
158 As with <tt>tmpfile()</tt>, the file disppears on
159 last <tt>close()</tt>
162 File can be linked into the filesystem using
163 <tt>linkat(..., AT_EMPTY_PATH)</tt>, allowing for 'atomic'
164 creation of file with complete contents and metadata
167 Not supported on all filesystem types, so you will usually need
174 <h1>Lustre filesystem [3.12]</h1>
177 A distributed filesystem, popular for cluster computing
181 Developed out-of-tree since 1999, but now added to Linux staging
185 Was included in squeeze but dropped from wheezy as it didn't
189 Userland is now missing from Debian
202 Linux 'Tux' logo © Larry Ewing, Simon Budig.
204 Redistribution is free but has to include this notice.
207 <li>Modified by Ben to add Debian open-ND logo</li>
211 Debian open-ND logo © Software in the Public Interest, Inc.
213 Permission is hereby granted, free of charge, to any person obtaining
214 a copy of this software and associated documentation files (the
215 "Software"), to deal in the Software without restriction, including
216 without limitation the rights to use, copy, modify, merge, publish,
217 distribute, sublicense, and/or sell copies of the Software, and to
218 permit persons to whom the Software is furnished to do so, subject to
219 the following conditions:
221 The above copyright notice and this permission notice shall be
222 included in all copies or substantial portions of the Software.
224 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
225 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
226 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
227 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
228 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
229 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
230 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.