On (23/12/01 11:28), Minchan Kim wrote: > On Thu, Nov 30, 2023 at 07:12:21PM +0900, Hyeonggon Yoo wrote: > > RFC v2: https://lore.kernel.org/linux-mm/20230713042037.980211-1-42.hyeyoo@xxxxxxxxx/ > > > > v2 -> v3: > > - rebased to the latest mm-unstable > > - adjusted comments from Sergey Senozhatsky (Moving zsdesc definition, > > kerneldoc fix) and Yosry Ahmed (adding memcg_data field to zsdesc) > > > > > > V3 update is a bit late, but I still believe this is worth doing. > > It would be nice to get comments/reviews/acks from maintainers/people. > > > > Cover Letter: > > > > The purpose of this series is to define own memory descriptor for zsmalloc, > > instead of re-using various fields of struct page. This is a part of the > > effort to reduce the size of struct page to unsigned long and enable > > dynamic allocation of memory descriptors. > > > > While [1] outlines this ultimate objective, the current use of struct page > > is highly dependent on its definition, making it challenging to separately > > allocate memory descriptors. > > > > Therefore, this series introduces new descriptor for zsmalloc, called > > zsdesc. It overlays struct page for now, but will eventually be allocated > > independently in the future. And apart from dynamic allocation of descriptors, > > this is a nice cleanup. > > And the new descriptor doesn't bloat anything for zsmalloc meta size. Right? > Please specify it into the description. Right, that popped up [1] previously but I'm not sure if we had a definitive answer. https://lore.kernel.org/lkml/20230720071826.GE955071@xxxxxxxxxx/
