Messages in this thread | | | Date | Fri, 27 Jan 2006 22:54:28 +0000 | From | Russell King <> | Subject | Re: How to map high memory for block io |
| |
On Fri, Jan 27, 2006 at 10:58:59PM +0100, Pierre Ossman wrote: > Test done here, few minutes ago. Added this to the wbsd driver in its > kmap routine: > > if ((host->cur_sg->offset + host->cur_sg->length) > PAGE_SIZE) > printk(KERN_DEBUG "wbsd: Big sg: %d, %d\n", > host->cur_sg->offset, host->cur_sg->length); > > got: > > [17385.425389] wbsd: Big sg: 0, 8192 > [17385.436849] wbsd: Big sg: 0, 7168 > [17385.436859] wbsd: Big sg: 0, 7168 > [17385.454029] wbsd: Big sg: 2560, 5632 > [17385.454216] wbsd: Big sg: 2560, 5632
Jens - what's going on? These look like invalid sg entries to me.
If they are supposed to be like that, there will be additional problems for block drivers ensuring cache coherency on PIO.
-- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |