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iommu/pages: use folio_nr_pages() instead of shift operation 

folio_nr_pages() is a faster helper function to get the number of pages when
NR_PAGES_IN_LARGE_FOLIO is enabled.

Signed-off-by: Pedro Demarchi Gomes <pedrodemargomes@gmail.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Pedro Demarchi Gomes 2025-10-04 00:23:51 -03:00 committed by Joerg Roedel
parent dcb6fa37fd
commit db340b02b2
1 changed files with 1 additions and 1 deletions
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2
drivers/iommu/iommu-pages.c
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@ -80,7 +80,7 @@ EXPORT_SYMBOL_GPL(iommu_alloc_pages_node_sz);
static void __iommu_free_desc(struct ioptdesc *iopt) static void __iommu_free_desc(struct ioptdesc *iopt)
{ {
struct folio *folio = ioptdesc_folio(iopt); struct folio *folio = ioptdesc_folio(iopt);
const unsigned long pgcnt = 1UL << folio_order(folio); const unsigned long pgcnt = folio_nr_pages(folio);
mod_node_page_state(folio_pgdat(folio), NR_IOMMU_PAGES, -pgcnt); mod_node_page_state(folio_pgdat(folio), NR_IOMMU_PAGES, -pgcnt);
lruvec_stat_mod_folio(folio, NR_SECONDARY_PAGETABLE, -pgcnt); lruvec_stat_mod_folio(folio, NR_SECONDARY_PAGETABLE, -pgcnt);