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From:   Liam Howlett <liam.howlett@oracle.com>
To:     "maple-tree@lists.infradead.org" <maple-tree@lists.infradead.org>,
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        Michel Lespinasse <walken.cr@gmail.com>,
        Liam Howlett <liam.howlett@oracle.com>
Subject: [PATCH 34/94] arch/m68k/kernel/sys_m68k: Use vma_lookup() in
 sys_cacheflush()
Thread-Topic: [PATCH 34/94] arch/m68k/kernel/sys_m68k: Use vma_lookup() in
 sys_cacheflush()
Thread-Index: AQHXPEQ0laV57ZRGcUG3mV86G64jWA==
Date:   Wed, 28 Apr 2021 15:36:06 +0000
Message-ID: <20210428153542.2814175-35-Liam.Howlett@Oracle.com>
References: <20210428153542.2814175-1-Liam.Howlett@Oracle.com>
In-Reply-To: <20210428153542.2814175-1-Liam.Howlett@Oracle.com>
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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@Oracle.com>
---
 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 cach=
e, unsigned long len)
 		 * to this process.
 		 */
 		mmap_read_lock(current->mm);
-		vma =3D find_vma(current->mm, addr);
-		if (!vma || addr < vma->vm_start || addr + len > vma->vm_end)
+		vma =3D vma_lookup(current->mm, addr);
+		if (!vma || addr + len > vma->vm_end)
 			goto out_unlock;
 	}
=20
--=20
2.30.2