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SubjectRe: [RFC PATCH] SCSI host lock push-down
Jeff Garzik wrote:
> An alternate arrangement, not presented by this patch, might
> be preferred: in order to make it clear that queuecommand
> locking has changed, one could s/queuecommand/queuecommand_nl/ in
> Scsi_Host_Template, in order to guarantee that drivers are either
> (a) upgraded or (b) broken at compile time. Compile-time detection of
> new locking may be desirable, and I'll volunteer to change my patch to
> do that, if community members prefer that route instead of below.

I followed only a fraction of the related discussion. Thus I wonder why a
renaming of scsi_host_template.queuecommand was not part of these attempts
from the very outset.

Given the choice between compile-time breakage of unconverted drivers and
silent invalidation of potential locking assumptions at runtime, the
preferable way forward is quite clear IMO.

(Since no coexistence period of .queuecommand and .queuecommand_nl or
.unlocked_queuecommand is planned, how about you rename it to .queue_command?
Follows Linux naming conventions more closely.)
--
Stefan Richter
-=====-==-=- =-== --==-
http://arcgraph.de/sr/

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