HI,
I have been trying to post a query for a lifetime on the kernelnewbies
mailing list, But have failed so far.
Do you have a section on Kernelnewbies.org which is a lot less crypic abt
the procedure .
I have a query which I would like posted. I have sent it before to
kernelnewbies@nl.linux.org but it still isnt posted there, so I'll send it
across with this mail.
To: kernelnewbies@nl.linux.org
cc:
Subject: doubt regarding :Waking up the request function for Block device
drivers??
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I was going through the code in linux/drivers/block/ll_rw_blk.c
and had a doubt which i though someone could answer
In a block device , The kernel maintains a global list of requests in
blk_dev[MAX_BLKDEV]. The request handlers are initalized for a
particular device by
q->request_fn = rfn;
My question is how does the Kernel signal ("wake up") the appropriate
driver that
"now you have a request that you need to service"
Thanks in advance
Mathew
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