On Wed, Jan 03, 2024 at 11:28:21PM -0800, Christoph Hellwig wrote: > On Wed, Jan 03, 2024 at 11:20:50PM -0800, Darrick J. Wong wrote: > > > Sure, I just suspect the commit message is wrong and it's not about > > > mapping the page into the kernel address space but something else. > > > > Yeah, I only did A/B testing of before and after this patch, so it's > > quite plausible that it's the lookup that's slowing us down. > > Can we re-rerun the test once the pending xfile changes are in? > I'd be kinda surprised if the fairly simply xarray lookup for the > page is so expensive. If it is the patch is a good bandaid for that, > I'd just like to ensure it actually is still needed. Ok, I'll do that. Were you planning to send that first series to Chandan for 6.8? --D
