virtio_pci: document why we defer kfree
authorMichael S. Tsirkin <mst@redhat.com>
Sun, 4 Jan 2015 15:28:27 +0000 (17:28 +0200)
committerMichael S. Tsirkin <mst@redhat.com>
Tue, 6 Jan 2015 14:35:36 +0000 (16:35 +0200)
commita1eb03f546d651a8f39c7d0692b1f7f5b4e7e3cd
tree5c13bec69e729fef992d61b9acaa0710aac6f6b7
parent63bd62a08ca45a0c804c3c89777edc7f76a2d6da
virtio_pci: document why we defer kfree

The reason we defer kfree until release function is because it's a
general rule for kobjects: kfree of the reference counter itself is only
legal in the release function.

Previous patch didn't make this clear, document this in code.

Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
drivers/virtio/virtio_pci_legacy.c