diff mbox series

[08/22] arch/m68k/kernel/sys_m68k: Use vma_lookup() in sys_cacheflush()

Message ID 20210510165839.2692974-9-Liam.Howlett@Oracle.com (mailing list archive)
State New
Headers show
Series mm: Add vma_lookup() | expand

Commit Message

Liam Howlett May 10, 2021, 4:58 p.m. UTC
Use vma_lookup() to find the VMA at a specific address.  As vma_lookup()
will return NULL if the address is not within any VMA, the start address
no longer needs to be validated.

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---
 arch/m68k/kernel/sys_m68k.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Geert Uytterhoeven May 11, 2021, 7:15 a.m. UTC | #1
On Mon, May 10, 2021 at 7:04 PM Liam Howlett <liam.howlett@oracle.com> wrote:
> Use vma_lookup() to find the VMA at a specific address.  As vma_lookup()
> will return NULL if the address is not within any VMA, the start address
> no longer needs to be validated.
>
> Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>

Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>

Gr{oetje,eeting}s,

                        Geert
diff mbox series

Patch

diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c
index f55bdcb8e4f1..bd0274c7592e 100644
--- a/arch/m68k/kernel/sys_m68k.c
+++ b/arch/m68k/kernel/sys_m68k.c
@@ -402,8 +402,8 @@  sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)
 		 * to this process.
 		 */
 		mmap_read_lock(current->mm);
-		vma = find_vma(current->mm, addr);
-		if (!vma || addr < vma->vm_start || addr + len > vma->vm_end)
+		vma = vma_lookup(current->mm, addr);
+		if (!vma || addr + len > vma->vm_end)
 			goto out_unlock;
 	}