There is no big changes between v4 and v5. I was able to fix things in scsi tgt, so I could remove the weird arguements the block helpers were taking for it. I also tried to break up the patchset for easier viewing. The final patch also takes care of the access_ok regression. These patches were made against linus's tree since Tomo needed me to break part of it out for his scsi tgt bug fix patches. 0001-rm-bio-hacks-in-scsi-tgt.txt - Drop scsi tgt's bio_map_user usage and convert it to blk_rq_map_user. Tomo is also sending this patch in his patchset since he needs it for his bug fixes. 0002-rm-block-device-arg-from-bio-map-user.txt - The block_device argument is never used in the bio map user functions, so this patch drops it. 0003-Support-large-sg-io-segments.txt - Modify the bio functions to allocate multiple pages at once instead of a single page. 0004-Add-reserve-buffer-for-sg-io.txt - Add reserve buffer support to the block layer for sg and st indirect IO use. 0005-Add-sg-io-mmap-helper.txt - Add some block layer helpers for sg mmap support. 0006-Convert-sg-to-block-layer-helpers.txt - Convert sg to block layer helpers. 0007-mv-user-buffer-copy-access_ok-test-to-block-helper.txt - Move user data buffer access_ok tests to block layer helpers. The goal of this patchset is to remove scsi_execute_async and reduce code duplication. People want to discuss further merging sg and bsg/scsi_ioctl functionality, but I did not handle and any of that in this patchset since people still disagree on what should supported with future interfaces. My only TODO is maybe make the bio reserve buffer mempoolable (make it work as mempool alloc and free functions). Since sg only supported one reserve buffer per fd I have not worked on it and it did not seem worth it if there are no users. - 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