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SubjectRe: [PATCH 1/4] block: make __blk_rq_prep_clone() copy most command flags
On Fri, Aug 27 2010 at  1:10pm -0400,
Tejun Heo <> wrote:

> Currently __blk_rq_prep_clone() copies only REQ_WRITE and REQ_DISCARD.
> There's no reason to omit other command flags and REQ_FUA needs to be
> copied to implement FUA support in request-based dm.
> REQ_COMMON_MASK which specifies flags to be copied from bio to request
> already identifies all the command flags. Define REQ_CLONE_MASK to be
> the same as REQ_COMMON_MASK for clarity and make __blk_rq_prep_clone()
> copy all flags in the mask.
> Signed-off-by: Tejun Heo <>

Looks great.

Acked-by: Mike Snitzer <>

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