On Wed, Oct 19, 2022 at 01:48:37PM +0800, Zhaoyang Huang wrote: > On Wed, Oct 19, 2022 at 12:47 PM Dave Chinner <david@xxxxxxxxxxxxx> wrote: > > I removed the mapping_set_large_folios() calls in the XFS inode > > instantiation and the test code has now run over 55,000 iterations > > without failing. The most iterations I'd seen with large folios > > enabled was about 7,000 - typically it would fail within 2-3,000 > > iterations. > hint from my side. The original problem I raised is under v5.15 where > there is no folio yet. But 5.15 does use 2MB pages in shmem. You haven't really provided any information, so I don't know whether the inode that you're having problems with is a shmem inode.
