On 2019/12/1 6:34 上午, Eric Wheeler wrote: > Hi Coly, > > We use 4.19.y and there have been many performance and stability changes > since then. I'm considering backporting the 5.4 version into 4.19 and > wondered: > > Are there any changes in bcache between 4.19 and 5.4 that depend on new > features elsewhere in the kernel, or should I basically be able to copy > the tree from 5.4 to 4.19 and fix minor compilation issues? > > Can you think of any issues that would arise from such a backport? Hi Eric, It should be OK to backport bcache patches from 5.4 to 4.19. I did similar thing for SUSE Enterprise kernel which were based on Linux 4.12 code base, and the changes was tiny. If you encounter problem during the backport, you may post the .rej file and maybe I can help. -- Coly Li
