On Wed, 6 Feb 2008, James Bottomley wrote: > > What we're talking about is a routine that provides drivers a simple > > way to access the data in a scatter-gather buffer (which may lie in > > highmem or otherwise not be easily reachable). The idea is that some > > commands are emulated by the driver rather than carried out by the > > device, and the driver needs some way to stick the results in the > > transfer buffer. > > Isn't that what scsi_kmap_sg() is designed for ... or do you need > something slightly different? I don't know -- I've never heard of scsi_kmap_sg(). And it doesn't appear to exist anywhere in my kernel source. Did you mean scsi_kmap_atomic_sg()? That appears to do only part of what usb_stor_access_xfer_buf() does. In fact, all it does is map a single page. Alan Stern - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
