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authorEric W. Biederman <ebiederm@xmission.com>2015-05-09 05:07:08 +0300
committerDavid S. Miller <davem@davemloft.net>2015-05-11 17:50:16 +0300
commit140e807da12988e2a925fe029336e7bb67a8d4de (patch)
treed201af832973088bc2d6c91d9b1ef68e7332f3da /fs/afs
parent80ba92fa1a92dea128283f69f55b02242e213650 (diff)
downloadlinux-140e807da12988e2a925fe029336e7bb67a8d4de.tar.xz
tun: Utilize the normal socket network namespace refcounting.
There is no need for tun to do the weird network namespace refcounting. The existing network namespace refcounting in tfile has almost exactly the same lifetime. So rewrite the code to use the struct sock network namespace refcounting and remove the unnecessary hand rolled network namespace refcounting and the unncesary tfile->net. This change allows the tun code to directly call sock_put bypassing sock_release and making SOCK_EXTERNALLY_ALLOCATED unnecessary. Remove the now unncessary tun_release so that if anything tries to use the sock_release code path the kernel will oops, and let us know about the bug. The macvtap code already uses it's internal socket this way. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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