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authorRoger Pau Monne <roger.pau@citrix.com>2013-10-29 18:31:14 +0100
committerJens Axboe <axboe@kernel.dk>2013-11-08 09:10:30 -0700
commitbfe11d6de1c416cea4f3f0f35f864162063ce3fa (patch)
tree25bc44562e7794cc41327c7c447cd49a9935a876 /drivers/block/pktcdvd.c
parentf1a3c6191369632ada5b709997b91a7f15045ff4 (diff)
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xen-blkfront: restore the non-persistent data path
When persistent grants were added they were always used, even if the backend doesn't have this feature (there's no harm in always using the same set of pages). This restores the old data path when the backend doesn't have persistent grants, removing the burden of doing a memcpy when it is not actually needed. Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Reported-by: Felipe Franciosi <felipe.franciosi@citrix.com> Cc: Felipe Franciosi <felipe.franciosi@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> [v2: Fix up whitespace issues]
Diffstat (limited to 'drivers/block/pktcdvd.c')
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