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dax: remove access to page->index

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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: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jane Chu <jane.chu@oracle.com>
Reviewed-by: Dan 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: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle)
2024-12-16 15:53:55 +00:00
committed by Andrew Morton
parent a91aaf8dd5
commit 995abaaadd
1 changed files with 4 additions and 5 deletions
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drivers/dax/device.c
+4 -5
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@@ -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;
}
}