filemap_alloc_folio
folio = filemap_alloc_folio(mapping_gfp_constraint(mapping, ~__GFP_FS),
folio = filemap_alloc_folio(mapping_gfp_constraint(inode->i_mapping, ~__GFP_FS),
newfolio = filemap_alloc_folio(gfp, 0, NULL);
cfolio = filemap_alloc_folio(__GFP_NOWARN | __GFP_IO, 0, NULL);
return &filemap_alloc_folio(gfp, 0, NULL)->page;
folio = filemap_alloc_folio(alloc_gfp, order, policy);
folio = filemap_alloc_folio(mapping_gfp_mask(mapping), min_order, NULL);
folio = filemap_alloc_folio(gfp, mapping_min_folio_order(mapping), NULL);
folio = filemap_alloc_folio(gfp_mask, order, NULL);