Tejun Heo wrote:
05_blk_scsi_turn_on_flushing_by_default.patch
: turn on QUEUE_ORDERED_FLUSH by default if ordered tag isn't supported
As flushing can now be used by devices which only support
simple tags, there's no need to use
Scsi_Host_Template->ordered_flush to enable it selectively.
This patch removes ->ordered_flush and enables flushing
implicitly when ordered tag isn't supported. If the device
doesn't support flushing, it can just return -EOPNOTSUPP for
flush requests. blk layer will switch to QUEUE_OREDERED_NONE
automatically.
This is rather nice...
Jeff
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