On Wed, Apr 27, 2011 at 05:55:38PM -0400, Mike Snitzer wrote:
> A target, like the upcoming thin provisioning target, may want to allow
> discards even if the underlying devices do not support them natively.
>
> Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
This would work, but I thing it's really confusing to have your
new discards_supported flag in the dm_target structure in addition
to the existing discards_supported in the dm_table and the
num_discard_requests field there.
May we should allow the target to set a tristate
enum discard_enabled {
NEVER,
ALWAYS,
PASSTHROUGH
}
to indicate it's discard support?
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