These cam_sim_alloc() calls seem to be fairly critical to the operation of DPT and friends, why is it even possible for them to return NULL in the first place and what would be the effect of a (properly handled) NULL return if it did occur at this point?
-Matt
Matthew Dillon <[EMAIL PROTECTED]>
cam_sim_alloc() is vital to the operation of any CAM driver. However,
cam_sim_alloc() mallocs it's data structures with the M_NOWAIT flag, so
it is possible for it to fail and have to return NULL. The reason it uses the M_NOWAIT flag is because there is no restrictions on when
driver attach events happen, though they all happen in normal process
or kthread context these days (except at boot, but if you have to sleep
for memory during boot, you have a lot of other problems).
Scott
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