On Sun, 8 Oct 2023 15:54:40 +0800 Zhaoyang Huang <huangzhaoyang@xxxxxxxxx> wrote: > > Roman previously asked > > > > : Also I'm a bit concerned about potential performance implications. > > : Would be great to provide some benchmarks or some data. Probably it's > > : ok because of we have pcp caches on top, but I'm not 100% sure. > > > > Are you able to perform such testing and tell us the result? > I have applied this patch in a v5.4 based ANDROID system and got no > regression problem. Actually, this commit is aimed to have > alloc_pages(GFP_USER) use CMA instead of stealing U&R(could lead to > GFP_KERNEL fail) only when zone's free pages and free cma are around > WATERMARK_LOW/MIN which would NOT affect most scenarios. OK, thanks. Could the appropriate people please take a look at this? It has been in mm-unstable since May. Thanks.
