On Wed, Mar 18, 2026 at 05:22:40PM +0800, Chunyu Hu wrote: > For question one. In guard-region test, collapse tests are for checking > collapse is denied when operating on guard region, not for checking > madvise(MADV_COLLAPSE) will fail when thp is setup to 'never with sysfs,
No, if thp is set to never, madvise(MADV_COLLAPSE) still succeeds. This is a source of confusion for many :) > result is same, but it's a different test. Maybe we don't have strong > interest to test when thp is set to 'never' in this collapse test. > Do you perfer we let it run when thp is setup with 'never'? Yes because it should still function then :) Cheers, Lorenzo
