X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=net%2Fipv4%2Ftcp.c;h=810cc164f795f8e1e8ca747ed5df51bb20fec8a2;hb=96144c58abe7ff767e754b5b80995f7b8846d49b;hp=ecbba0abd3e5b70212c54c0cbf9f20656180c13c;hpb=bc139119a1708ae3db1ebb379630f286e28d06e8;p=mirror_ubuntu-jammy-kernel.git

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index ecbba0abd3e5..810cc164f795 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1734,7 +1734,7 @@ int tcp_mmap(struct file *file, struct socket *sock,
 		return -EPERM;
 	vma->vm_flags &= ~(VM_MAYWRITE | VM_MAYEXEC);
 
-	/* Instruct vm_insert_page() to not down_read(mmap_sem) */
+	/* Instruct vm_insert_page() to not mmap_read_lock(mm) */
 	vma->vm_flags |= VM_MIXEDMAP;
 
 	vma->vm_ops = &tcp_vm_ops;
@@ -1798,11 +1798,11 @@ static int tcp_zerocopy_receive(struct sock *sk,
 
 	tp = tcp_sk(sk);
 
-	down_read(&current->mm->mmap_sem);
+	mmap_read_lock(current->mm);
 
 	vma = find_vma(current->mm, address);
 	if (!vma || vma->vm_start > address || vma->vm_ops != &tcp_vm_ops) {
-		up_read(&current->mm->mmap_sem);
+		mmap_read_unlock(current->mm);
 		return -EINVAL;
 	}
 	zc->length = min_t(unsigned long, zc->length, vma->vm_end - address);
@@ -1883,7 +1883,7 @@ static int tcp_zerocopy_receive(struct sock *sk,
 						   zc);
 	}
 out:
-	up_read(&current->mm->mmap_sem);
+	mmap_read_unlock(current->mm);
 	if (length) {
 		WRITE_ONCE(tp->copied_seq, seq);
 		tcp_rcv_space_adjust(sk);