[PATCH 3/5] NLM: Add helper to handle IPv4 addresses

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Clean up: introduce a helper function to generate IPv4 addresses using
the same style as the IPv6 helper function we just added.

Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---

 fs/lockd/host.c |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index 012e49a..780918a 100644
--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -105,6 +105,13 @@ static void nlm_clear_port(struct sockaddr *sap)
 	}
 }
 
+static void nlm_display_ipv4_address(const struct sockaddr *sap, char *buf,
+				     const size_t len)
+{
+	const struct sockaddr_in *sin = (struct sockaddr_in *)sap;
+	snprintf(buf, len, "%pI4", &sin->sin_addr.s_addr);
+}
+
 static void nlm_display_ipv6_address(const struct sockaddr *sap, char *buf,
 				     const size_t len)
 {
@@ -122,11 +129,9 @@ static void nlm_display_ipv6_address(const struct sockaddr *sap, char *buf,
 static void nlm_display_address(const struct sockaddr *sap,
 				char *buf, const size_t len)
 {
-	const struct sockaddr_in *sin = (struct sockaddr_in *)sap;
-
 	switch (sap->sa_family) {
 	case AF_INET:
-		snprintf(buf, len, "%pI4", &sin->sin_addr.s_addr);
+		nlm_display_ipv4_address(sap, buf, len);
 		break;
 	case AF_INET6:
 		nlm_display_ipv6_address(sap, buf, len);

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