On Thu, 8 Nov 2018, Greg KH wrote: > On Thu, Nov 08, 2018 at 08:58:32PM +0100, Thomas Gleixner wrote: > > Fixes: 1234567890AB ("subsys/comp: Short summary") > > Backport-to: 4.14 > > Ick, no. Just stick to the "Fixes:" tag. My scripts can now track when > a patch is backported to a stable tree so that I know to apply it to > older ones despite the original patch showing up in a newer release.
Fine with me. I just did a few stats. commits between 4.19-rc1 and 4.19-final: Total commits: 2098 Total Cc: stable 334 Cc: stable 119 35% Cc: stable #kver 10 3% Cc: stable Revert 0 0% Cc: stable Fixes 123 37% Cc: stable Fixes #kver 81 24% Total Fixes only 584 Fixes only > 4.18 227 39% Fixes only <= 4.18 357 61% and between 4.19 and todays top of tree: Total commits: 12947 Total Cc: stable 251 Cc: stable 85 34% Cc: stable #kver 28 11% Cc: stable reverts 2 1% Cc: stable Fixes 79 31% Cc: stable Fixes #kver 55 22% Total Fixes only 835 Fixes only > 4.19 830 99% Fixes only <= 4.19 5 1% Not much change in the 'cc stable' ratio for those without any information and for those with Fixes tag and #kver. The cc stable + kver and the cc stable + Fixes differ, but their sum is roughly the same. But the real interesting change is that between 4.19-rc1 and 4.19-final the number of Fixes only (no CC stable) commits which fix a commit in 4.18 or earlier is rather high, while the same category on post 4.19 is minimal. I'll run a larger and more detailed scan to figure out whether there is a trend or this is just random. Thanks, tglx