* The actual compression is based on zlib, see the other files.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/fs.h>
 #include <linux/pagemap.h>
                /* check for wrong endianness */
                if (super.magic == CRAMFS_MAGIC_WEND) {
                        if (!silent)
-                               pr_err("cramfs: wrong endianness\n");
+                               pr_err("wrong endianness\n");
                        return -EINVAL;
                }
 
                mutex_unlock(&read_mutex);
                if (super.magic != CRAMFS_MAGIC) {
                        if (super.magic == CRAMFS_MAGIC_WEND && !silent)
-                               pr_err("cramfs: wrong endianness\n");
+                               pr_err("wrong endianness\n");
                        else if (!silent)
-                               pr_err("cramfs: wrong magic\n");
+                               pr_err("wrong magic\n");
                        return -EINVAL;
                }
        }
 
        /* get feature flags first */
        if (super.flags & ~CRAMFS_SUPPORTED_FLAGS) {
-               pr_err("cramfs: unsupported filesystem features\n");
+               pr_err("unsupported filesystem features\n");
                return -EINVAL;
        }
 
        /* Check that the root inode is in a sane state */
        if (!S_ISDIR(super.root.mode)) {
-               pr_err("cramfs: root is not a directory\n");
+               pr_err("root is not a directory\n");
                return -EINVAL;
        }
        /* correct strange, hard-coded permissions of mkcramfs */
        sbi->magic=super.magic;
        sbi->flags=super.flags;
        if (root_offset == 0)
-               pr_info("cramfs: empty filesystem");
+               pr_info("empty filesystem");
        else if (!(super.flags & CRAMFS_FLAG_SHIFTED_ROOT_OFFSET) &&
                 ((root_offset != sizeof(struct cramfs_super)) &&
                  (root_offset != 512 + sizeof(struct cramfs_super))))
        {
-               pr_err("cramfs: bad root offset %lu\n", root_offset);
+               pr_err("bad root offset %lu\n", root_offset);
                return -EINVAL;
        }
 
                if (compr_len == 0)
                        ; /* hole */
                else if (unlikely(compr_len > (PAGE_CACHE_SIZE << 1))) {
-                       pr_err("cramfs: bad compressed blocksize %u\n",
+                       pr_err("bad compressed blocksize %u\n",
                                compr_len);
                        goto err;
                } else {