Messages in this thread | | | Date | Thu, 02 Mar 2006 06:22:48 -0500 | From | Jeff Garzik <> | Subject | Re: [PATCH] bsg, block layer sg |
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Jens Axboe wrote: > Hi, > > After all that SG_IO and cdrecord talk, I decided to brush off the bsg > driver I wrote some time ago. Basically this is a full (aims to be at > least, probably still some minor bits missing) SG v3 interface. It > supports both SG_IO (which we just pass through for now), as well as > read/write and readv/writev of sg_io_hdr structures. > > What's new in this area is that the bsg character device is closely tied > to the block device. This relationsship is depicted in sysfs. bsg > devices will show up in /sys/class/bsg/<devname>, and there is a link > from /sys/block/<devname>/queue/bsg to that directory. With some > udev/hotplug magic, it should create device nodes for you automatically. > > TODO: > > - Fold block/scsi_ioctl.c and block/bsg.c into one > - Further improve the sysfs relations between a device and bsg > - Test and so on > > Probably some bugs still pending, it works for me though.
For my part, this gets a strong ACK. I've been waiting for something like this since an OLS discussion years ago.
Thanks Jens!
Jeff
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