On Tue, Apr 29, 2008 at 9:54 AM, Jens Axboe <jens.axboe@xxxxxxxxxx> wrote: > > On Sat, Apr 26 2008, FUJITA Tomonori wrote: > > This is an updated patchset for large command support to the block > > layer: > > > > http://marc.info/?l=linux-scsi&m=120817127118449&w=2 > > > > We rarely handle large commands. So for optimization, a struct request > > still has a static array for a command. rq_init sets rq->cmd pointer > > to the static array. In short, rq_init() does > > > > rq->cmd = rq->__cmd; > > > > So we can access to rq->cmd and rq->cmd_len as before. > > > > This change requires everyone to initialize the request in a proper > > way (that is, just doing a memset() will not work). Now we have > > rq_init() that works for any path so this patchset can cleanly convert > > users of requests on the stack or kmalloced requests to use it (the > > previous patchset does it in a hacky way): > > > > http://marc.info/?l=linux-scsi&m=120911792725876&w=2 > > > > This patchset is against Jens' for-linus branch. > > > > #1-#4 patches can be applied via Jens' tree now. #5 patch is for > > IDE. It cleanly can be applied to both Bart's latest quilt tree and > > Jens' tree though Bart's quilt tree has some pending IDE patches. #4 > > patch depends on #4. #6 patch depends on #1-#5. > > > > I guess that the easiest way to apply this patchset would be: > > > > 1. Pushing Bart's quilt tree to mainline. > > 2. Rebasing Jens' tree to mainline. > > 3. Pushing this patchset via Jens' tree. > > > > Jens and Bart, let me know if I can do something to make the process > > easier. > > > > Bart, I will try to push the patchset to remove the requests on the > > stack for 2.6.27: > > > > http://marc.info/?l=linux-ide&m=120882410712466&w=2 > > I've applied all patches to the for-linus branch, it should go up > soonish. If anyone has problems with this, please holler SOON. Fine with me (patches look good and survived quick testing). My only concern is that the final series from Tomo lacked "block: replace sizeof(rq->cmd) with BLK_MAX_CDB" and it is also not in for-linus branch (it has to be merged before "block: add large command support" patch or ide-cd will break). Thanks, Bart -- 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
