[SCSI] convert st to use scsi_execute_async

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convert st to always send scatterlists and kill scsi_request
usage.

This is the same as last time as it was posted, but with Kai's patches
merged and we now pass the bytes value to scsi_execute_async.

TODO:

- move DIO code to common place or make block layers usable for ULDs.
- move buffer allocation code to common place for all ULDs to use. And
make buffer allocation code handle all queue limits so we can find
out about problems before calling scsi_execute_async.
- move indirect (copy_to/from_user) paths commone place or make block
layers usable for ULDs.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

...

This commit is contained in:

Mike Christie 2005-11-08 04:06:44 -06:00 • committed by James Bottomley

parent d6b10348f9

commit 8b05b773b6

2 changed files with 123 additions and 145 deletions

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254

drivers/scsi/st.c

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14

drivers/scsi/st.h

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