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| author | Jason Wang | 2013-07-04 03:52:57 +0200 |
|---|---|---|
| committer | Rusty Russell | 2013-07-04 03:55:06 +0200 |
| commit | 9b9cd8024a2882e896c65222aa421d461354e3f2 (patch) | |
| tree | 16d4ce44ff3f326828e32c2b7c2073f12f37d9b1 /tools/lguest/Makefile | |
| parent | tools/lguest: real barriers. (diff) | |
| download | kernel-qcow2-linux-9b9cd8024a2882e896c65222aa421d461354e3f2.tar.gz kernel-qcow2-linux-9b9cd8024a2882e896c65222aa421d461354e3f2.tar.xz kernel-qcow2-linux-9b9cd8024a2882e896c65222aa421d461354e3f2.zip | |
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/lguest/Makefile')
0 files changed, 0 insertions, 0 deletions