Hi all,
could someone explain to me:
- what is the difference between blk-mq and scsi-mq
- why don't I observe large speedups when running the same tiotests on Linux
v3.12 (which has no blk-mq) and Linux v3.14 (which does have blk-mq) on a
Xilinx Zynq development board (the two Linux versions are
Andras Kovacs freemail.hu> writes:
reading/writing to the target SDD (which is driven through the UFS driver)?
Of course I meant SSD.
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Matias Bjorling bjorling.me> writes:
Thank you for your answers; now things are somewhat clearer.
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Hi all,
I'm trying to see what parameters are passed to the UFS driver from the
SCSI midlayer when an UNMAP command is issued. In the UFS driver I can see
the 10 byte command itself in the unsigned char *cmnd field of the struct
scsi_cmnd, and it tells me that the parameter list length is 24
Elliott, Robert (Server Storage hp.com> writes:
> That is the data transferred for the command, not in the
> command descriptor block itself.
Thank you. Then I guess I'll find the Paramerer List in the struct
scsi_data_buffer sdb variable (within struct scsi_cmnd). Will check on Monday.
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To
Andras Kovacs fixstars.com> writes:
>
> Elliott, Robert (Server Storage hp.com> writes:
>
> > That is the data transferred for the command, not in the
> > command descriptor block itself.
>
> Thank you. Then I guess I'll find the Paramerer List in the
Christoph Hellwig infradead.org> writes:
>
> On Mon, Nov 10, 2014 at 11:44:39AM -0500, Martin K. Petersen wrote:
> > You'll have to traverse scatterlist and extract the descriptor from
> > there. You can use scsi_for_each_sg() to walk the list.
Thank you; I'm working on it.
> >
> > If you o
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