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authorJason Wang <jasowang@redhat.com>2013-07-04 11:22:57 +0930
committerRusty Russell <rusty@rustcorp.com.au>2013-07-04 11:25:06 +0930
commit9b9cd8024a2882e896c65222aa421d461354e3f2 (patch)
tree16d4ce44ff3f326828e32c2b7c2073f12f37d9b1 /tools
parent0d69a65e97fc8090ee83c8639137b4b5c8ece237 (diff)
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virtio-net: fix the race between channels setting and refill
Commit 55257d72bd1c51f25106350f4983ec19f62ed1fa (virtio-net: fill only rx queues which are being used) tries to refill on demand when changing the number of channels by call try_refill_recv() directly, this may race: - the refill work who may do the refill in the same time - the try_refill_recv() called in bh since napi was not disabled Which may led guest complain during setting channels: virtio_net virtio0: input.1:id 0 is not a head! Solve this issue by scheduling a refill work which can guarantee the serialization of refill. Cc: Sasha Levin <sasha.levin@oracle.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions