On Fri, Aug 09, 2013 at 02:09:34PM -0500, scame...@beardog.cce.hp.com wrote: > > So, I'm working on a block driver using the make_request_fn > interface, and have to handle a bio that comes in with > (bi_rw & REQ_FLUSH) set AND data to transfer. > > According to Documentation/block/writeback_cache_control.txt: > > The REQ_FLUSH flag can be OR ed into the r/w flags of a > bio submitted from the filesystem and will make sure the > volatile cache of the storage device has been flushed > before the actual I/O operation is started. > > So I've written code that handles that case, along with the > various error cases I might encounter, I think, which leads > to my question: > > How do I get such a bio with a data transfer AND the REQ_FLUSH bit > set to come into the driver? Just wondering how to test this case. > > Thanks, > > (I cc'ed Tejun Heo just because his name is in block/blk-flush.c) > > -- steve
Oops, you'd think I'd know Jens's email address by now. -- steve -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
