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| author | Tejun Heo <tj@kernel.org> | 2015-12-08 01:38:51 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-12-09 06:02:33 +0300 |
| commit | 297dbde19cf6a0ccb6fd4396c6220a5912ed61e8 (patch) | |
| tree | d1b65de60b8d8adfd2f84542cd59d9ed61f12c6b /block/blk-mq-cpu.c | |
| parent | bc9b145a092aca91a7f6ef40cdb3628b6ada7ec9 (diff) | |
| download | linux-297dbde19cf6a0ccb6fd4396c6220a5912ed61e8.tar.xz | |
netprio_cgroup: limit the maximum css->id to USHRT_MAX
netprio builds per-netdev contiguous priomap array which is indexed by
css->id. The array is allocated using kzalloc() effectively limiting
the maximum ID supported to some thousand range. This patch caps the
maximum supported css->id to USHRT_MAX which should be way above what
is actually useable.
This allows reducing sock->sk_cgrp_prioidx to u16 from u32. The freed
up part will be used to overload the cgroup related fields.
sock->sk_cgrp_prioidx's position is swapped with sk_mark so that the
two cgroup related fields are adjacent.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Cc: Daniel Borkmann <daniel@iogearbox.net>
CC: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'block/blk-mq-cpu.c')
0 files changed, 0 insertions, 0 deletions