[PATCH v11 03/16] mm/secretmem: make use of folio_{zap,restore}_direct_map

Kalyazin, Nikita
2026-03-17T14:11:14Z

From: Nikita Kalyazin <kalyazin@amazon.com>

Signed-off-by: Nikita Kalyazin <kalyazin@amazon.com>
---
mm/secretmem.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/mm/secretmem.c b/mm/secretmem.c
index fd29b33c6764..27b176af8fc4 100644
--- a/mm/secretmem.c
+++ b/mm/secretmem.c
@@ -53,7 +53,6 @@ static vm_fault_t secretmem_fault(struct vm_fault *vmf)
struct inode *inode = file_inode(vmf->vma->vm_file);
pgoff_t offset = vmf->pgoff;
gfp_t gfp = vmf->gfp_mask;
- unsigned long addr;
struct folio *folio;
vm_fault_t ret;
int err;
@@ -72,7 +71,7 @@ static vm_fault_t secretmem_fault(struct vm_fault *vmf)
goto out;
}

- err = set_direct_map_invalid_noflush(folio_address(folio));
+ err = folio_zap_direct_map(folio);
if (err) {
folio_put(folio);
ret = vmf_error(err);
@@ -87,7 +86,7 @@ static vm_fault_t secretmem_fault(struct vm_fault *vmf)
* already happened when we marked the page invalid
* which guarantees that this call won't fail
*/
- set_direct_map_default_noflush(folio_address(folio));
+ folio_restore_direct_map(folio);
folio_put(folio);
if (err == -EEXIST)
goto retry;
@@ -95,9 +94,6 @@ static vm_fault_t secretmem_fault(struct vm_fault *vmf)
ret = vmf_error(err);
goto out;
}
-
- addr = (unsigned long)folio_address(folio);
- flush_tlb_kernel_range(addr, addr + PAGE_SIZE);
}

vmf->page = folio_file_page(folio, vmf->pgoff);
--
2.50.1