Re: [PATCH v3 15/15] mm/slab: replace __GFP_NO_OBJ_EXT with SLAB_ALLOC_NO_RECURSE for sheaves

[Suren Baghdasaryan]

On Wed, Jun 17, 2026 at 7:37 AM Harry Yoo <harry@xxxxxxxxxx> wrote:
>
>
>
> On 6/15/26 8:54 PM, Vlastimil Babka (SUSE) wrote:
> > Finish the switch away from __GFP_NO_OBJ_EXT by replacing it with
> > SLAB_ALLOC_NO_RECURSE when allocating empty sheaves. Pass alloc_flags to
> > [__]alloc_empty_sheaf(). Callers that can't be part of a recursive
> > kmalloc() chain simply pass SLAB_ALLOC_DEFAULT. Use kmalloc_flags()
> > instead of kzalloc() for allocating the sheaf.
> >
> > With that we can finalize the removal the __GFP_NO_OBJ_EXT handling from
> > obj_ext allocations as well, leaving only SLAB_ALLOC_NO_RECURSE in
> > place.
> >
> > This leaves __GFP_NO_OBJ_EXT with no users in slab, so stop allowing the
> > flag in kmalloc_nolock().
> >
> > Link: https://patch.msgid.link/20260610-slab_alloc_flags-v2-16-7190909db118@xxxxxxxxxx
> > Reviewed-by: Hao Li <hao.li@xxxxxxxxx>
> > Signed-off-by: Vlastimil Babka (SUSE) <vbabka@xxxxxxxxxx>
> > ---
>
> Looks good to me,
> Reviewed-by: Harry Yoo (Oracle) <harry@xxxxxxxxxx>

Reviewed-by: Suren Baghdasaryan <surenb@xxxxxxxxxx>

>
> --
> Cheers,
> Harry / Hyeonggon