On 11/30/2010 06:23 PM, Kai Makisara wrote: > On Tue, 30 Nov 2010, Boaz Harrosh wrote: > >> On 11/30/2010 03:31 PM, Lukas Kolbe wrote: >>> On Mon, 2010-11-29 at 19:09 +0200, Kai Makisara wrote: >>> > .... >> It looks like something is broken/old-code in sr. Most important LLDs >> and block-layer scsi-ml fully support sg-chaining that effectively are >> able to deliver limitless (Only limited by HW) sg sizes. It looks like >> sr has some code that tries to allocate contiguous buffers larger than >> PAGE_SIZE. Why does it do that? It should not be necessary any more. >> > The relevant driver is st Sorry I meant st, yes. > and it use sg chaining when necessary. I tried > to explain that the effective limit in this case comes from mptsas. I > don't know if it is HW limit or driver limit. > Than I don't understand where is the failing allocation. Where in the code path anyone is trying to allocate something bigger then a page? Please explain? > Kai > Thanks Boaz -- 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
