Commit 995abaaa authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Andrew Morton
Browse files

dax: remove access to page->index 

This looks like a complete mess (why are we setting page->index at page
fault time?), but I no longer care about DAX, and there's no reason to let
DAX hold us back from removing page->index.

Link: https://lkml.kernel.org/r/20241216155408.8102-1-willy@infradead.org


Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: default avatarJane Chu <jane.chu@oracle.com>
Reviewed-by: default avatarDan Williams <dan.j.williams@intel.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent a91aaf8d

drivers/dax/device.c

+4 −5
Original line number Diff line number Diff line
@@ -89,14 +89,13 @@ static void dax_set_mapping(struct vm_fault *vmf, pfn_t pfn, 
			ALIGN_DOWN(vmf->address, fault_size));



	for (i = 0; i < nr_pages; i++) {

		struct page *page = pfn_to_page(pfn_t_to_pfn(pfn) + i);

		struct folio *folio = pfn_folio(pfn_t_to_pfn(pfn) + i);



		page = compound_head(page);

		if (page->mapping)

		if (folio->mapping)

			continue;



		page->mapping = filp->f_mapping;

		page->index = pgoff + i;

		folio->mapping = filp->f_mapping;

		folio->index = pgoff + i;

	}

}