staging: android: lowmemorykiller: Don't wait more than one second for a process to die
If a process forked and the child process was killed by the
lowmemorykiller, the lowmemory killer would be disabled until
the parent process reaped the child or it died itself.
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/android/lowmemorykiller.c b/drivers/staging/android/lowmemorykiller.c
index 2d8d2b7..efc7dc1 100644
--- a/drivers/staging/android/lowmemorykiller.c
+++ b/drivers/staging/android/lowmemorykiller.c
@@ -54,6 +54,7 @@
static int lowmem_minfree_size = 4;
static struct task_struct *lowmem_deathpending;
+static unsigned long lowmem_deathpending_timeout;
#define lowmem_print(level, x...) \
do { \
@@ -103,7 +104,8 @@
* Note: Currently you need CONFIG_PROFILING
* for this to work correctly.
*/
- if (lowmem_deathpending)
+ if (lowmem_deathpending &&
+ time_before_eq(jiffies, lowmem_deathpending_timeout))
return 0;
if (lowmem_adj_size < array_size)
@@ -178,6 +180,7 @@
*/
#ifdef CONFIG_PROFILING
lowmem_deathpending = selected;
+ lowmem_deathpending_timeout = jiffies + HZ;
task_handoff_register(&task_nb);
#endif
force_sig(SIGKILL, selected);