From: Liam R. Howlett <Liam.Howlett@Oracle.com>
Date: Thu, 8 Apr 2021 17:16:07 +0000 (-0400)
Subject: net/ipv5/tcp: Use vma_lookup() in tcp_zerocopy_receive()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=3950f2ee185c0f9c0dc85a6239683bfffd59489b;p=users%2Fjedix%2Flinux-maple.git

net/ipv5/tcp: Use vma_lookup() in tcp_zerocopy_receive()

Clean up code by using vma_lookup() to look up a specific VMA.

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index e14fd0c50c10..d4781a514012 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2094,8 +2094,8 @@ static int tcp_zerocopy_receive(struct sock *sk,
 
 	mmap_read_lock(current->mm);
 
-	vma = find_vma(current->mm, address);
-	if (!vma || vma->vm_start > address || vma->vm_ops != &tcp_vm_ops) {
+	vma = vma_lookup(current->mm, address);
+	if (!vma || vma->vm_ops != &tcp_vm_ops) {
 		mmap_read_unlock(current->mm);
 		return -EINVAL;
 	}