diff mbox series

[v3,3/3] mm: Use update_mmu_tlb_range() to simplify code

Message ID 20240518074914.52170-4-libang.li@antgroup.com (mailing list archive)
State New
Headers show
Series Add update_mmu_tlb_range() to simplify code | expand

Commit Message

Bang Li May 18, 2024, 7:49 a.m. UTC 
Let us simplify the code by update_mmu_tlb_range().

Signed-off-by: Bang Li <libang.li@antgroup.com>
---
 mm/memory.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

Comments

Lance Yang May 20, 2024, 2:45 p.m. UTC | #1 
On Sat, May 18, 2024 at 3:51 PM Bang Li <libang.li@antgroup.com> wrote:
>
> Let us simplify the code by update_mmu_tlb_range().
>

LGTM.
Reviewed-by: Lance Yang <ioworker0@gmail.com>

> Signed-off-by: Bang Li <libang.li@antgroup.com>
> ---
>  mm/memory.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/mm/memory.c b/mm/memory.c
> index eea6e4984eae..2d53e29cf76e 100644
> --- a/mm/memory.c
> +++ b/mm/memory.c
> @@ -4421,7 +4421,6 @@ static vm_fault_t do_anonymous_page(struct vm_fault *vmf)
>         vm_fault_t ret = 0;
>         int nr_pages = 1;
>         pte_t entry;
> -       int i;
>
>         /* File mapping without ->vm_ops ? */
>         if (vma->vm_flags & VM_SHARED)
> @@ -4491,8 +4490,7 @@ static vm_fault_t do_anonymous_page(struct vm_fault *vmf)
>                 update_mmu_tlb(vma, addr, vmf->pte);
>                 goto release;
>         } else if (nr_pages > 1 && !pte_range_none(vmf->pte, nr_pages)) {
> -               for (i = 0; i < nr_pages; i++)
> -                       update_mmu_tlb(vma, addr + PAGE_SIZE * i, vmf->pte + i);
> +               update_mmu_tlb_range(vma, addr, vmf->pte, nr_pages);
>                 goto release;
>         }
>
> --
> 2.19.1.6.gb485710b
>
David Hildenbrand May 21, 2024, 9:37 a.m. UTC | #2 
On 18.05.24 09:49, Bang Li wrote:
> Let us simplify the code by update_mmu_tlb_range().
> 
> Signed-off-by: Bang Li <libang.li@antgroup.com>
> ---
>   mm/memory.c | 4 +---
>   1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/mm/memory.c b/mm/memory.c
> index eea6e4984eae..2d53e29cf76e 100644
> --- a/mm/memory.c
> +++ b/mm/memory.c
> @@ -4421,7 +4421,6 @@ static vm_fault_t do_anonymous_page(struct vm_fault *vmf)
>   	vm_fault_t ret = 0;
>   	int nr_pages = 1;
>   	pte_t entry;
> -	int i;
>   
>   	/* File mapping without ->vm_ops ? */
>   	if (vma->vm_flags & VM_SHARED)
> @@ -4491,8 +4490,7 @@ static vm_fault_t do_anonymous_page(struct vm_fault *vmf)
>   		update_mmu_tlb(vma, addr, vmf->pte);
>   		goto release;
>   	} else if (nr_pages > 1 && !pte_range_none(vmf->pte, nr_pages)) {
> -		for (i = 0; i < nr_pages; i++)
> -			update_mmu_tlb(vma, addr + PAGE_SIZE * i, vmf->pte + i);
> +		update_mmu_tlb_range(vma, addr, vmf->pte, nr_pages);
>   		goto release;
>   	}
>   

Acked-by: David Hildenbrand <david@redhat.com>
diff mbox series

Patch

diff --git a/mm/memory.c b/mm/memory.c
index eea6e4984eae..2d53e29cf76e 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -4421,7 +4421,6 @@  static vm_fault_t do_anonymous_page(struct vm_fault *vmf)
 	vm_fault_t ret = 0;
 	int nr_pages = 1;
 	pte_t entry;
-	int i;
 
 	/* File mapping without ->vm_ops ? */
 	if (vma->vm_flags & VM_SHARED)
@@ -4491,8 +4490,7 @@  static vm_fault_t do_anonymous_page(struct vm_fault *vmf)
 		update_mmu_tlb(vma, addr, vmf->pte);
 		goto release;
 	} else if (nr_pages > 1 && !pte_range_none(vmf->pte, nr_pages)) {
-		for (i = 0; i < nr_pages; i++)
-			update_mmu_tlb(vma, addr + PAGE_SIZE * i, vmf->pte + i);
+		update_mmu_tlb_range(vma, addr, vmf->pte, nr_pages);
 		goto release;
 	}