fs/affs: define AFFSNAMEMAX to replace constant use

30 was used all over the place to compare name length against
AFFS maximum name length.

Signed-off-by: Fabian Frederick <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

fs/affs/affs.h

···
 #define AFFS_AC_SIZE		(AFFS_CACHE_SIZE/sizeof(struct affs_ext_key)/2)
 #define AFFS_AC_MASK		(AFFS_AC_SIZE-1)
 
+#define AFFSNAMEMAX 30U
+
 struct affs_ext_key {
 	u32	ext;				/* idx of the extended block */
 	u32	key;				/* block number */

fs/affs/amigaffs.c

···
 {
 	int	 i;
 
-	if (len > 30) {
+	if (len > AFFSNAMEMAX) {
 		if (notruncate)
 			return -ENAMETOOLONG;
 		else
-			len = 30;
+			len = AFFSNAMEMAX;
 	}
 	for (i = 0; i < len; i++) {
 		if (name[i] < ' ' || name[i] == ':'
···
 int
 affs_copy_name(unsigned char *bstr, struct dentry *dentry)
 {
-	u32 len = min(dentry->d_name.len, 30u);
+	u32 len = min(dentry->d_name.len, AFFSNAMEMAX);
 
 	*bstr++ = len;
 	memcpy(bstr, dentry->d_name.name, len);

fs/affs/dir.c

···
 				break;
 			}
 
-			namelen = min(AFFS_TAIL(sb, fh_bh)->name[0], (u8)30);
+			namelen = min(AFFS_TAIL(sb, fh_bh)->name[0],
+				      (u8)AFFSNAMEMAX);
 			name = AFFS_TAIL(sb, fh_bh)->name + 1;
 			pr_debug("readdir(): dir_emit(\"%.*s\", ino=%u), hash=%d, f_pos=%llx\n",
 				 namelen, name, ino, hash_pos, ctx->pos);

fs/affs/namei.c

···
 		return retval;
 
 	hash = init_name_hash();
-	len = min(qstr->len, 30u);
+	len = min(qstr->len, AFFSNAMEMAX);
 	for (; len > 0; name++, len--)
 		hash = partial_name_hash(toupper(*name), hash);
 	qstr->hash = end_name_hash(hash);
···
 	 * If the names are longer than the allowed 30 chars,
 	 * the excess is ignored, so their length may differ.
 	 */
-	if (len >= 30) {
-		if (name->len < 30)
+	if (len >= AFFSNAMEMAX) {
+		if (name->len < AFFSNAMEMAX)
 			return 1;
-		len = 30;
+		len = AFFSNAMEMAX;
 	} else if (len != name->len)
 		return 1;
 
···
 	const u8 *name = dentry->d_name.name;
 	int len = dentry->d_name.len;
 
-	if (len >= 30) {
-		if (*name2 < 30)
+	if (len >= AFFSNAMEMAX) {
+		if (*name2 < AFFSNAMEMAX)
 			return 0;
-		len = 30;
+		len = AFFSNAMEMAX;
 	} else if (len != *name2)
 		return 0;
 
···
 	toupper_t toupper = affs_get_toupper(sb);
 	u32 hash;
 
-	hash = len = min(len, 30u);
+	hash = len = min(len, AFFSNAMEMAX);
 	for (; len > 0; len--)
 		hash = (hash * 13 + toupper(*name++)) & 0x7ff;
 

fs/affs/super.c

···
 	buf->f_bavail  = free;
 	buf->f_fsid.val[0] = (u32)id;
 	buf->f_fsid.val[1] = (u32)(id >> 32);
-	buf->f_namelen = 30;
+	buf->f_namelen = AFFSNAMEMAX;
 	return 0;
 }