On Wed, Aug 19, 2009 at 6:49 AM, Anatolij Gustschin<agust@xxxxxxx> wrote: > Hello Dan, > > Currently I am trying to estimate efforts for rework of the > ppc440SPe ADMA driver for inclusion in mainline Linux and a couple of > questions have arisen. As the current ASYNC_TX API in mainline Linux > doesn't contain support for RAID6 offload operations, the current > ppc440SPe ADMA driver have to be reworked to support RAID5 operations > only which would be a step backward and also would require some > changes in the ASYNC_TX code to cope with large dma_addr_t addresses. > Therefore my understanding is that the rework of the ADMA driver for > inclusion in mainline should be better based on code from your raid6 > branch. Or what would be a better base? > > If I understand it correctly initially the intention was to place > this work in linux-next and probably submit a pull request towards > the end of the 2.6.31 merge window. Is there any plan to proceed with > this? Did you get a chance to look at per-cpu implementation for the > scribble-buffer? Yes, this work is still progressing and I am planning a new drop of the patches to the mailing list Real Soon Now TM. I have just now updated the raid6 branch [1] with the latest snapshot of the code. You can start basing your update on this branch. Note, it might rebase as I receive review feedback, but I do not expect the dma driver interface to change from this point. This includes the percpu conversion of the scribble buffer [2], and a new patch I am not sure about yet "multicore raid processing" [3]. -- Dan [1]: git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx.git raid6 [2]: http://git.kernel.org/?p=linux/kernel/git/djbw/async_tx.git;a=commitdiff;h=d02774cc58b8d80d66d49efe541afa727f6a5f15 [3]: http://git.kernel.org/?p=linux/kernel/git/djbw/async_tx.git;a=commitdiff;h=a8882290f39a97ea3d16aa9bee309097d9c54abd -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
