On 10/05/2017 01:41 PM, Jens Axboe wrote: > On 10/05/2017 01:23 PM, Thomas Gleixner wrote: >> On Thu, 5 Oct 2017, Jens Axboe wrote: >>> On 10/05/2017 11:49 AM, Kees Cook wrote: >>>> Yes, totally true. tglx and I ended up meeting face-to-face at the >>>> Kernel Recipes conference and we solved some outstanding design issues >>>> with the conversion. The timing meant the new API went into -rc3, >>>> which seemed better than missing an entire release cycle, or carrying >>>> deltas against maintainer trees that would drift. (This is actually my >>>> second massive refactoring of these changes...) >>> >>> Honestly, I think the change should have waited for 4.15 in that case. >>> Why the rush? It wasn't ready for the merge window. >> >> Come on. You know very well that a prerequisite for global changes which is >> not yet used in Linus tree can get merged post merge windew in order to >> avoid massive inter maintainer tree dependencies. We've done that before. > > My point is that doing it this late makes things harder than they should > have been. If this was in for -rc1, it would have made things a lot > easier. Or even -rc2. I try and wait to fork off the block tree for as > long as I can, -rc2 is generally where that happens. Timing of the change aside, this patch doesn't even apply to the 4.15 block tree: checking file block/blk-core.c checking file include/linux/writeback.h Hunk #1 succeeded at 309 (offset -20 lines). checking file mm/page-writeback.c Hunk #1 FAILED at 1977. Hunk #2 FAILED at 1988. 2 out of 2 hunks FAILED -- Jens Axboe