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staging: android: lowmemorykiller: Don't wait more than one second for a process to die

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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>
This commit is contained in:
Arve Hjønnevåg 2012-01-13 22:21:25 +04:00 committed by Greg Kroah-Hartman
parent 9545f86e3a
commit e5d7965f88
1 changed files with 4 additions and 1 deletions
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5
drivers/staging/android/lowmemorykiller.c
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@ -54,6 +54,7 @@ static size_t lowmem_minfree[6] = {
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 @@ static int lowmem_shrink(struct shrinker *s, struct shrink_control *sc)
* 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 @@ static int lowmem_shrink(struct shrinker *s, struct shrink_control *sc)
*/
#ifdef CONFIG_PROFILING
lowmem_deathpending = selected;
lowmem_deathpending_timeout = jiffies + HZ;
task_handoff_register(&task_nb);
#endif
force_sig(SIGKILL, selected);