| commit | bc5a5e3f45d047844830233fb95b19a95c864a0f | [log] [tgz] |
|---|---|---|
| author | Peter Hurley <peter@hurleysoftware.com> | Sat Jun 15 09:14:21 2013 -0400 |
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | Tue Jul 23 16:43:00 2013 -0700 |
| tree | 7d28526f720ac5460dde965c57d2fea1ed6410b3 | |
| parent | ce74117a1823431c86f5cb620fa852d21310feac [diff] |
n_tty: Don't wrap input buffer indices at buffer size Wrap read_buf indices (read_head, read_tail, canon_head) at max representable value, instead of at the N_TTY_BUF_SIZE. This step is necessary to allow lockless reads of these shared variables (by updating the variables atomically). Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>