[PATCH V2 08/15] staging: unisys: visorhba: use sg helper to operate sgl

Ming Lei ming.lei at redhat.com
Thu Jun 13 10:04:11 UTC 2019

On Thu, Jun 13, 2019 at 11:52:14AM +0200, Greg Kroah-Hartman wrote:
> On Thu, Jun 13, 2019 at 03:13:28PM +0800, Ming Lei wrote:
> > The current way isn't safe for chained sgl, so use sg helper to
> > operate sgl.
> I can not make any sense out of this changelog.
> What "isn't safe"?  What is a "sgl"?

sgl is 'scatterlist' in kernel, and several linear sgl can be chained
together, so accessing the sgl in linear way may see a chained sg, which
is like a link pointer, then may cause trouble for driver.

> Can this be applied "out of order"?

Yes, there isn't any dependency among the 15 patches.


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