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authorPaul Menage <menage@google.com>2009-05-26 20:47:02 -0700
committerDavid S. Miller <davem@davemloft.net>2009-05-26 20:47:02 -0700
commite65fcfd63a9a62baa5708484ff8edbe56eb3e7ec (patch)
tree0d21a21c2b87ef1c8db600d6abed3ba3e22cdaef /.gitignore
parent7682455ec36fce70bdbad9f739de05060dedfa27 (diff)
cls_cgroup: read classid atomically in classifier
Avoid reading the unsynchronized value cs->classid multiple times, since it could change concurrently from non-zero to zero; this would result in the classifier returning a positive result with a bogus (zero) classid. Signed-off-by: Paul Menage <menage@google.com> Reviewed-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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