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| author | Jason Wang | 2013-01-23 04:59:12 +0100 |
|---|---|---|
| committer | David S. Miller | 2013-01-23 19:47:06 +0100 |
| commit | edfb6a148ce62e5e19354a1dcd9a34e00815c2a1 (patch) | |
| tree | 839be5ca970b47e5b5fa38c9df3e672732ef6987 /virt/kvm/kvm_main.c | |
| parent | net: cdc_mbim: send ZLP only for the specific buggy device (diff) | |
| download | kernel-qcow2-linux-edfb6a148ce62e5e19354a1dcd9a34e00815c2a1.tar.gz kernel-qcow2-linux-edfb6a148ce62e5e19354a1dcd9a34e00815c2a1.tar.xz kernel-qcow2-linux-edfb6a148ce62e5e19354a1dcd9a34e00815c2a1.zip | |
tuntap: reduce memory using of queues
A MAX_TAP_QUEUES(1024) queues of tuntap device is always allocated
unconditionally even userspace only requires a single queue device. This is
unnecessary and will lead a very high order of page allocation when has a high
possibility to fail. Solving this by creating a one queue net device when
userspace only use one queue and also reduce MAX_TAP_QUEUES to
DEFAULT_MAX_NUM_RSS_QUEUES which can guarantee the success of
the allocation.
Reported-by: Dirk Hohndel <dirk@hohndel.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'virt/kvm/kvm_main.c')
0 files changed, 0 insertions, 0 deletions