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| author | Glauber Costa <glommer@parallels.com> | 2011-12-11 22:47:06 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-12-13 01:04:11 +0100 |
| commit | 3aaabe2342c36bf48567b88fa78b819eee14bb5e (patch) | |
| tree | 1364c84c53ba6382f9a9df9d6f42a3bc37427d05 /Documentation/device-mapper | |
| parent | per-netns ipv4 sysctl_tcp_mem (diff) | |
| download | linux-3aaabe2342c36bf48567b88fa78b819eee14bb5e.tar.xz linux-3aaabe2342c36bf48567b88fa78b819eee14bb5e.zip | |
tcp buffer limitation: per-cgroup limit
This patch uses the "tcp.limit_in_bytes" field of the kmem_cgroup to
effectively control the amount of kernel memory pinned by a cgroup.
This value is ignored in the root cgroup, and in all others,
caps the value specified by the admin in the net namespaces'
view of tcp_sysctl_mem.
If namespaces are being used, the admin is allowed to set a
value bigger than cgroup's maximum, the same way it is allowed
to set pretty much unlimited values in a real box.
Signed-off-by: Glauber Costa <glommer@parallels.com>
Reviewed-by: Hiroyouki Kamezawa <kamezawa.hiroyu@jp.fujitsu.com>
CC: David S. Miller <davem@davemloft.net>
CC: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/device-mapper')
0 files changed, 0 insertions, 0 deletions