On Wed, Mar 15, 2017 at 02:05:11PM +1100, Neil Brown wrote: > This is a revised version of my series to remove all abuse of > bi_phys_segments from md/raid. > > Most of the effort is for raid5 - raid1 and raid10 are > comparatively straight forward. > > I've also include some optimization of md_write_start() which is now > used more heavily. This now uses percpu-refcount, which needed a > small modification. looks quite good, there are some minor issues I replied separately. > As noted in some of these changelogs, a couple of bugs are fixed > in raid1/raid10. We should probably create fixes suitable for > -stable. At first glance, it seems not easy to create a stable fix. The bio_inc_remaining only exists in several kernel versions. There isn't easy way to fix the issue without the per-bio accounting mechanism. > In this series there is a 'block' patch and a 'percpu-refcount' patch, > which should probably go in through other trees. I might send those > off as appropriate soonish. Please do. The block patch could go other tree, as it's mostly separately. The percpu-refcount patch could be a problem if it goes other tree. Thanks, Shaohua -- 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
