Subject: [PATCH v1 02/16] mm/memory: remove "zap_details" parameter from zap_page_range_single()

From: "David Hildenbrand (Arm)" <[email-masked]>
Date: Fri, 27 Feb 2026 21:08:33 +0100

Nobody except memory.c should really set that parameter to non-NULL. So
let's just drop it and make unmap_mapping_range_vma() use
zap_page_range_single_batched() instead.

Signed-off-by: David Hildenbrand (Arm) <[email-masked]>
---
 arch/s390/mm/gmap_helpers.c    |  2 +-
 drivers/android/binder_alloc.c |  2 +-
 include/linux/mm.h             |  5 ++---
 kernel/bpf/arena.c             |  3 +--
 kernel/events/core.c           |  2 +-
 mm/madvise.c                   |  3 +--
 mm/memory.c                    | 16 ++++++++++------
 net/ipv4/tcp.c                 |  5 ++---
 rust/kernel/mm/virt.rs         |  2 +-
 9 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/arch/s390/mm/gmap_helpers.c b/arch/s390/mm/gmap_helpers.c
index dea83e3103e5..ae2d59a19313 100644
--- a/arch/s390/mm/gmap_helpers.c
+++ b/arch/s390/mm/gmap_helpers.c
@@ -89,7 +89,7 @@ void gmap_helper_discard(struct mm_struct *mm, unsigned long vmaddr, unsigned lo
 		if (!vma)
 			return;
 		if (!is_vm_hugetlb_page(vma))
-			zap_page_range_single(vma, vmaddr, min(end, vma->vm_end) - vmaddr, NULL);
+			zap_page_range_single(vma, vmaddr, min(end, vma->vm_end) - vmaddr);
 		vmaddr = vma->vm_end;
 	}
 }
diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c
index 241f16a9b63d..dd2046bd5cde 100644
--- a/drivers/android/binder_alloc.c
+++ b/drivers/android/binder_alloc.c
@@ -1185,7 +1185,7 @@ enum lru_status binder_alloc_free_page(struct list_head *item,
 	if (vma) {
 		trace_binder_unmap_user_start(alloc, index);
 
-		zap_page_range_single(vma, page_addr, PAGE_SIZE, NULL);
+		zap_page_range_single(vma, page_addr, PAGE_SIZE);
 
 		trace_binder_unmap_user_end(alloc, index);
 	}
diff --git a/include/linux/mm.h b/include/linux/mm.h
index ecff8268089b..a8138ff7d1fa 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2835,11 +2835,10 @@ struct page *vm_normal_page_pud(struct vm_area_struct *vma, unsigned long addr,
 void zap_vma_ptes(struct vm_area_struct *vma, unsigned long address,
 		  unsigned long size);
 void zap_page_range_single(struct vm_area_struct *vma, unsigned long address,
-			   unsigned long size, struct zap_details *details);
+			   unsigned long size);
 static inline void zap_vma_pages(struct vm_area_struct *vma)
 {
-	zap_page_range_single(vma, vma->vm_start,
-			      vma->vm_end - vma->vm_start, NULL);
+	zap_page_range_single(vma, vma->vm_start, vma->vm_end - vma->vm_start);
 }
 struct mmu_notifier_range;
 
diff --git a/kernel/bpf/arena.c b/kernel/bpf/arena.c
index 144f30e740e8..c34510d83b1f 100644
--- a/kernel/bpf/arena.c
+++ b/kernel/bpf/arena.c
@@ -656,8 +656,7 @@ static void zap_pages(struct bpf_arena *arena, long uaddr, long page_cnt)
 	guard(mutex)(&arena->lock);
 	/* iterate link list under lock */
 	list_for_each_entry(vml, &arena->vma_list, head)
-		zap_page_range_single(vml->vma, uaddr,
-				      PAGE_SIZE * page_cnt, NULL);
+		zap_page_range_single(vml->vma, uaddr, PAGE_SIZE * page_cnt);
 }
 
 static void arena_free_pages(struct bpf_arena *arena, long uaddr, long page_cnt, bool sleepable)
diff --git a/kernel/events/core.c b/kernel/events/core.c
index ac70d68217b6..c94c56c94104 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -7215,7 +7215,7 @@ static int map_range(struct perf_buffer *rb, struct vm_area_struct *vma)
 #ifdef CONFIG_MMU
 	/* Clear any partial mappings on error. */
 	if (err)
-		zap_page_range_single(vma, vma->vm_start, nr_pages * PAGE_SIZE, NULL);
+		zap_page_range_single(vma, vma->vm_start, nr_pages * PAGE_SIZE);
 #endif
 
 	return err;
diff --git a/mm/madvise.c b/mm/madvise.c
index efc04334a000..557a360f7919 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -1193,8 +1193,7 @@ static long madvise_guard_install(struct madvise_behavior *madv_behavior)
 		 * OK some of the range have non-guard pages mapped, zap
 		 * them. This leaves existing guard pages in place.
 		 */
-		zap_page_range_single(vma, range->start,
-				range->end - range->start, NULL);
+		zap_page_range_single(vma, range->start, range->end - range->start);
 	}
 
 	/*
diff --git a/mm/memory.c b/mm/memory.c
index 9385842c3503..19f5f9a60995 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2203,17 +2203,16 @@ void zap_page_range_single_batched(struct mmu_gather *tlb,
  * @vma: vm_area_struct holding the applicable pages
  * @address: starting address of pages to zap
  * @size: number of bytes to zap
- * @details: details of shared cache invalidation
  *
  * The range must fit into one VMA.
  */
 void zap_page_range_single(struct vm_area_struct *vma, unsigned long address,
-		unsigned long size, struct zap_details *details)
+		unsigned long size)
 {
 	struct mmu_gather tlb;
 
 	tlb_gather_mmu(&tlb, vma->vm_mm);
-	zap_page_range_single_batched(&tlb, vma, address, size, details);
+	zap_page_range_single_batched(&tlb, vma, address, size, NULL);
 	tlb_finish_mmu(&tlb);
 }
 
@@ -2235,7 +2234,7 @@ void zap_vma_ptes(struct vm_area_struct *vma, unsigned long address,
 	    		!(vma->vm_flags & VM_PFNMAP))
 		return;
 
-	zap_page_range_single(vma, address, size, NULL);
+	zap_page_range_single(vma, address, size);
 }
 EXPORT_SYMBOL_GPL(zap_vma_ptes);
 
@@ -3003,7 +3002,7 @@ static int remap_pfn_range_notrack(struct vm_area_struct *vma, unsigned long add
 	 * maintain page reference counts, and callers may free
 	 * pages due to the error. So zap it early.
 	 */
-	zap_page_range_single(vma, addr, size, NULL);
+	zap_page_range_single(vma, addr, size);
 	return error;
 }
 
@@ -4226,7 +4225,12 @@ static void unmap_mapping_range_vma(struct vm_area_struct *vma,
 		unsigned long start_addr, unsigned long end_addr,
 		struct zap_details *details)
 {
-	zap_page_range_single(vma, start_addr, end_addr - start_addr, details);
+	struct mmu_gather tlb;
+
+	tlb_gather_mmu(&tlb, vma->vm_mm);
+	zap_page_range_single_batched(&tlb, vma, start_addr,
+				      end_addr - start_addr, details);
+	tlb_finish_mmu(&tlb);
 }
 
 static inline void unmap_mapping_range_tree(struct rb_root_cached *root,
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index f84d9a45cc9d..befcde27dee7 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2104,7 +2104,7 @@ static int tcp_zerocopy_vm_insert_batch_error(struct vm_area_struct *vma,
 		maybe_zap_len = total_bytes_to_map -  /* All bytes to map */
 				*length + /* Mapped or pending */
 				(pages_remaining * PAGE_SIZE); /* Failed map. */
-		zap_page_range_single(vma, *address, maybe_zap_len, NULL);
+		zap_page_range_single(vma, *address, maybe_zap_len);
 		err = 0;
 	}
 
@@ -2269,8 +2269,7 @@ static int tcp_zerocopy_receive(struct sock *sk,
 	total_bytes_to_map = avail_len & ~(PAGE_SIZE - 1);
 	if (total_bytes_to_map) {
 		if (!(zc->flags & TCP_RECEIVE_ZEROCOPY_FLAG_TLB_CLEAN_HINT))
-			zap_page_range_single(vma, address, total_bytes_to_map,
-					      NULL);
+			zap_page_range_single(vma, address, total_bytes_to_map);
 		zc->length = total_bytes_to_map;
 		zc->recv_skip_hint = 0;
 	} else {
diff --git a/rust/kernel/mm/virt.rs b/rust/kernel/mm/virt.rs
index da21d65ccd20..b8e59e4420f3 100644
--- a/rust/kernel/mm/virt.rs
+++ b/rust/kernel/mm/virt.rs
@@ -124,7 +124,7 @@ pub fn zap_page_range_single(&self, address: usize, size: usize) {
         // sufficient for this method call. This method has no requirements on the vma flags. The
         // address range is checked to be within the vma.
         unsafe {
-            bindings::zap_page_range_single(self.as_ptr(), address, size, core::ptr::null_mut())
+            bindings::zap_page_range_single(self.as_ptr(), address, size)
         };
     }
 
-- 
2.43.0