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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.

Change-Id: I709b1a4e1b1a1970e51d26a39fcbee57977bbc7f
Signed-off-by: Arve Hjønnevåg <arve@android.com>
This commit is contained in:
Arve Hjønnevåg
2010-11-23 18:20:28 -08:00
committed by Colin Cross
parent 00b0a66a03
commit 280e506943
1 changed files with 4 additions and 1 deletions
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5
drivers/staging/android/lowmemorykiller.c
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@@ -53,6 +53,7 @@ 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 { \
@@ -99,7 +100,8 @@ static int lowmem_shrink(struct shrinker *s, int nr_to_scan, gfp_t gfp_mask)
* this pass.
*
*/
if (lowmem_deathpending)
if (lowmem_deathpending &&
time_before_eq(jiffies, lowmem_deathpending_timeout))
return 0;
if (lowmem_adj_size < array_size)
@@ -168,6 +170,7 @@ static int lowmem_shrink(struct shrinker *s, int nr_to_scan, gfp_t gfp_mask)
selected->pid, selected->comm,
selected_oom_adj, selected_tasksize);
lowmem_deathpending = selected;
lowmem_deathpending_timeout = jiffies + HZ;
force_sig(SIGKILL, selected);
rem -= selected_tasksize;
}