At each login the user forces the kernel to create a new terminal and
allocate up to ~1Kb memory for the tty-related structures.
It makes sense to account for them to restrict the host's memory
consumption from inside the memcg-limited container.
Signed-off-by: Vasily Averin <vvs@xxxxxxxxxxxxx>
---
drivers/tty/tty_io.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 391bada..e613b8e 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -1502,7 +1502,7 @@ void tty_save_termios(struct tty_struct *tty)
/* Stash the termios data */
tp = tty->driver->termios[idx];
if (tp == NULL) {
- tp = kmalloc(sizeof(*tp), GFP_KERNEL);
+ tp = kmalloc(sizeof(*tp), GFP_KERNEL_ACCOUNT);
if (tp == NULL)
return;
tty->driver->termios[idx] = tp;
@@ -3127,7 +3127,7 @@ struct tty_struct *alloc_tty_struct(struct tty_driver *driver, int idx)
{
struct tty_struct *tty;
- tty = kzalloc(sizeof(*tty), GFP_KERNEL);
+ tty = kzalloc(sizeof(*tty), GFP_KERNEL_ACCOUNT);
if (!tty)
return NULL;
--
1.8.3.1
