On Mon, 23 Jun 2025 00:32:05 +0530 Shivank Garg [off-list ref] wrote:

quoted

-EXPORT_SYMBOL(__filemap_get_folio);
+EXPORT_SYMBOL(__filemap_get_folio_mpol);
 
 static inline struct folio *find_get_entry(struct xa_state *xas, pgoff_t max,
 		xa_mark_t mark)
_

Hi Andrew,

Thank you for addressing this.

If you don’t mind me asking,
I was curious why we used EXPORT_SYMBOL instead of EXPORT_SYMBOL_GPL here.
I had previously received feedback recommending the use of EXPORT_SYMBOL_GPL
to better align with the kernel’s licensing philosophy, which made sense to me.

Making this _GPL would effectively switch __filemap_get_folio() from
non-GPL to GPL.  Leaving it at non-GPL is less disruptive and Matthew's
patch did not have the intention of changing licensing.

Also,

hp2:/usr/src/25> grep "EXPORT_SYMBOL(" mm/filemap.c|wc -l
48
hp2:/usr/src/25> grep "EXPORT_SYMBOL_GPL(" mm/filemap.c|wc -l 
9