[PATCH 34/94] arch/m68k/kernel/sys_m68k: Use vma_lookup() in sys_cacheflush()

From: Liam Howlett
Date: Wed Apr 28 2021 - 11:39:23 EST


Using vma_lookup() enables for simplified checking of the returned vma
to ensure the end address also falls within the same vma. The start
address must be in the returned vma from vma_lookup().

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

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;
}

--
2.30.2