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authorRusty Russell <rusty@rustcorp.com.au>2008-04-07 14:30:28 +1000
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-07 13:14:22 -0700
commit2557a933b795c1988c721ebb871cd735128bb9cb (patch)
tree96581bd5acac44bbe0399aa445197509d9ae60ff /mm
parent4cac04dd63fa3b202ee313ed1afbbd135ab887ee (diff)
virtio: remove overzealous BUG_ON.
The 'disable_cb' callback is designed as an optimization to tell the host we don't need callbacks now. As it is not reliable, the debug check is overzealous: it can happen on two CPUs at the same time. Document this. Even if it were reliable, the virtio_net driver doesn't disable callbacks on transmit so the START_USE/END_USE debugging reentrance protection can be easily tripped even on UP. Thanks to Balaji Rao for the bug report and testing. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> CC: Balaji Rao <balajirrao@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions