Douglas Gilbert <dgilbert@xxxxxxxxxxxx> wrote:
> BTW Joerg: SG_SET_RESERVED_SIZE simply makes it extremely
> unlikely that the sg driver will not be able to fetch
> enough memory from the kernel to move data associated with
> a SCSI command. The block layer SG_IO just fudges that.
> While a major concern in lk 2.0, memory starvation is typically
> not a major concern in lk 2.6 assuming modern hardware.
> The sg driver's reserved buffer has other uses as
> FUJITA Tomonori pointed out yesterday on the linux-scsi list.
If it is documented, no problem. The information I had said that
SG_SET_RESERVED_SIZE would be limited in case that the HW does not allow
bigger sizes.
Let us try out whether the proposed interface works as expected.
Jörg
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