Dear list, I'm very sorry I didn't find the time earlier to pursue this matter. Indeed it was a coding error on my side. I sat up sg_io_hdr_t correctly except for one thing: dxfer_len was set to the amount of blocks instead of block*logical_blocksize - so it was all my bad. Thank you for the suggestions, it helped finding the error quickly. Greetings, Stefan Am 24.08.2010 09:27, schrieb Tejun Heo: > Hello, > > On 08/24/2010 12:41 AM, Stefan /*St0fF*/ Hübner wrote: >> As far as I know my code I thought I did send enough data. Maybe I'm >> misunderstanding something: I valloc'ated block_count*logical_block_size >> bytes, filled them with data and presented this buffer to the >> sg_io_hdr_t structure by setting dxfer_len to the length of the buffer, >> setting dxferp to a pointer to the buffer and setting the >> dxfer_direction to SG_DXFER_TO_DEV. >> >> The only thing coming to my mind would be overflow of dxfer_len, but as >> this is a unsigned int - wouldn't it be 32 bits wide? (and by that >> accepting f.e. 64k*512 bytes = 33 554 432 bytes (32M, needing 25 bits)) >> >> Any other suggestions, or do I have to present the code? > > Yeah, posting a simple test case would be the best way to proceed > here. > > Thanks. > -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
