[dm-devel] [PATCH 03/18] block: fix elevator init check

[Martin K. Petersen]

>>>>> "Christoph" == Christoph Hellwig <hch at lst.de> writes:

Christoph> We can't initalize the elevator fields for flushes as flush
Christoph> share space in struct request with the elevator data.  But
Christoph> currently we can't commnicate that a request is a flush

communicate

Christoph> through blk_get_request as we can only pass READ or WRITE,
Christoph> and the low-level code looks at the possible NULL bio to
Christoph> check for a flush.

Christoph> Fix this by allowing to pass any block op and flags, and by
Christoph> checking for the flush flags in __get_request.

Reviewed-by: Martin K. Petersen <martin.petersen at oracle.com>

-- 
Martin K. Petersen	Oracle Linux Engineering