f2fs: arguments cleanup of finding file flow functions

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/hash.c b/fs/f2fs/hash.c
index 6eb8d26..948d17bf 100644
--- a/fs/f2fs/hash.c
+++ b/fs/f2fs/hash.c
@@ -69,12 +69,14 @@
 		*buf++ = pad;
 }
 
-f2fs_hash_t f2fs_dentry_hash(const char *name, size_t len)
+f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info)
 {
 	__u32 hash;
 	f2fs_hash_t f2fs_hash;
 	const char *p;
 	__u32 in[8], buf[4];
+	const char *name = name_info->name;
+	size_t len = name_info->len;
 
 	if ((len <= 2) && (name[0] == '.') &&
 		(name[1] == '.' || name[1] == '\0'))