Hi there...
I am writing a network block device driver. In the
request function, when I get a READ command, I have to
send a message to a remote machine and get the data
from there. This takes considerable time duration.
So, I need to make that device driver sleep. The
reception of data is done in another thread.
I have tried different ways, all in vain. I tried
wait_event_interruptible(...) followed by condition
set and wake_up(...) when I want to wake up.
I also tried to have a variable along with a while
loop to indicate whether the request function should
loop or come out of the loop.
I have also tried interruptible_sleep_on(...) and
clones. I cannot use
interruptible_sleep_on_timeout(...) because the
network latency is not known before hand.
These all things give kernel oops and make the
kernel unstable.
Can anyone please tell me how to make a block
device driver sleep and then wake it up from another
thread in the kernel.
Please help...its urgent....
TIA.
Pooja.
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