On 4/10/2024 3:21 AM, Oscar Salvador wrote:
On Mon, Apr 08, 2024 at 05:34:29PM -0700, Jane Chu wrote:
At this stage, 'p' is not expected to be a large page since a _refcount has
been taken, right? So is it reasonable to replace the "if (retry)" block
with a VM_BUG_ON warning? otherwise, if 'p' became part of a different
large folio, how to recover from here ?
We might have split the THP (if it was part of), but AFAICS
nothing stops the kernel to coallesce this page again into a new THP via e.g:
madvise(MADV_HUGEPAGE) ?
Good point, thanks!
-jane
