On Mon, Aug 12, 2024 at 08:59:53PM +0800, Yafang Shao wrote:
>
> I don’t see any incompatibility in __alloc_pages_slowpath(). The
> ~__GFP_DIRECT_RECLAIM flag only ensures that direct reclaim is not
> performed, but it doesn’t prevent the allocation of pages from
> ALLOC_MIN_RESERVE, correct?
>
> > and thus will lead to kernel crashes.
>
> Could you please explain in detail where this might lead to kernel crashes?
Sorry, I misread your patch as doing what your subject says.
A nestable noreclaim is probably fine, but please name it that way,
as memalloc_nowait_{save,restore} implies a context version
of GFP_NOWAIT.
