diff options
| -rw-r--r-- | include/linux/tty.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h index 568369a86306..593228a520e1 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h | |||
| @@ -70,12 +70,13 @@ struct tty_buffer { | |||
| 70 | 70 | ||
| 71 | /* | 71 | /* |
| 72 | * We default to dicing tty buffer allocations to this many characters | 72 | * We default to dicing tty buffer allocations to this many characters |
| 73 | * in order to avoid multiple page allocations. We assume tty_buffer itself | 73 | * in order to avoid multiple page allocations. We know the size of |
| 74 | * is under 256 bytes. See tty_buffer_find for the allocation logic this | 74 | * tty_buffer itself but it must also be taken into account that the |
| 75 | * must match | 75 | * the buffer is 256 byte aligned. See tty_buffer_find for the allocation |
| 76 | * logic this must match | ||
| 76 | */ | 77 | */ |
| 77 | 78 | ||
| 78 | #define TTY_BUFFER_PAGE ((PAGE_SIZE - 256) / 2) | 79 | #define TTY_BUFFER_PAGE (((PAGE_SIZE - sizeof(struct tty_buffer)) / 2) & ~0xFF) |
| 79 | 80 | ||
| 80 | 81 | ||
| 81 | struct tty_bufhead { | 82 | struct tty_bufhead { |