After the behaviour of specifier '%pD' is changed to print full path
of struct file, the related test cases are also updated.

Given the string is prepended from the end of the buffer, the check
of "wrote beyond the nul-terminator" should be skipped.

Signed-off-by: Jia He <redacted>
---
 lib/test_printf.c | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/lib/test_printf.c b/lib/test_printf.c
index ec0d5976bb69..3632bd6cf906 100644
--- a/lib/test_printf.c
+++ b/lib/test_printf.c

@@ -78,7 +80,7 @@ do_test(int bufsize, const char *expect, int elen,
 		return 1;
 	}
 
-	if (memchr_inv(test_buffer + written + 1, FILL_CHAR, BUF_SIZE + PAD_SIZE - (written + 1))) {
+	if (!is_prepend_buf && memchr_inv(test_buffer + written + 1, FILL_CHAR, BUF_SIZE + PAD_SIZE - (written + 1))) {
 		pr_warn("vsnprintf(buf, %d, \"%s\", ...) wrote beyond the nul-terminator\n",
 			bufsize, fmt);
 		return 1;

@@ -496,6 +498,27 @@ dentry(void)
 	test("  bravo/alfa|  bravo/alfa", "%12pd2|%*pd2", &test_dentry[2], 12, &test_dentry[2]);
 }
 
+static struct vfsmount test_vfsmnt = {};
+
+static struct file test_file __initdata = {
+	.f_path = { .dentry = &test_dentry[2],
+		    .mnt = &test_vfsmnt,
+	},
+};
+
+static void __init
+f_d_path(void)
+{
+	test("(null)", "%pD", NULL);
+	test("(efault)", "%pD", PTR_INVALID);
+
+	is_prepend_buf = true;
+	test("/bravo/alfa   |/bravo/alfa   ", "%-14pD|%*pD", &test_file, -14, &test_file);
+	test("   /bravo/alfa|   /bravo/alfa", "%14pD|%*pD", &test_file, 14, &test_file);
+	test("   /bravo/alfa|/bravo/alfa   ", "%14pD|%-14pD", &test_file, &test_file);