Mark Lord wrote: > The READ/WRITE LONG commands are theoretically obsolete, > but the majority of drives in existance still implement them. > > The WRITE_LONG and WRITE_LONG_ONCE commands are of particular > interest for fault injection testing -- eg. creating "media errors" > at specific locations on a disk. > > The fussy bit is that these commands require a non-standard > sector size, usually 520 bytes instead of 512. > > This patch adds support to libata for READ/WRITE LONG commands > issued via SG_IO/ATA_16. > > This patch was generated against a 2.6.21-rc3-git7 base: I think it would be better if this comes in two patches. One to add qc->sect_size and convert all users of ATA_SECT_SIZE to qc->sect_size and the other one to implement READ/WRITE LONG. Another question is whether this needs to be included into mainline. This is definitely useful but it is mostly for debugging/testing. Hmmm... But we're gonna need qc->sect_size anyway for devices with larger sector sizes and overhead for supporting READ/WRITE LONG is nearly nill, so I'm voting for inclusion. Thanks. -- tejun - 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
