On Fri, Dec 13, 2024 at 03:49:53PM +0800, Kefeng Wang wrote: > > > On 2024/12/13 12:25, Matthew Wilcox wrote: > > On Wed, Dec 11, 2024 at 10:43:46AM +0100, Amir Goldstein wrote: > > > I think this patch is fine as is. > > > > This patch is complete crap. The test-case is broken. NAK to all of > > this. > > > Hi Matthew, regardless of the test case, the original issue is the > ovl don't respect underlying fs' get_unmapped_area(), the lower fs may > have own rules for vma alignment(own get_unmapped_area callback), > thp_get_unmapped_area() is one case, what's your option/suggestion about No, filesystems don't "have their own rules" for get_unmapped_area. get_unmapped_area is for device drivers.