This "changed" variable is kind of deprecated. We used to have a spinlock
[which was later deemed unecessary] around the first if clause in the
*_watermark_state() functions; the variable was needed in order to move the
operation in the second if clause out of the lock section.
Signed-off-by: Viktor Rosendahl <viktor.rosendahl@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
static void low_watermark_state(int new_state)
{
- int changed = 0;
-
if (low_watermark_reached != new_state) {
low_watermark_reached = new_state;
- changed = 1;
- }
-
- if (changed)
sysfs_notify(&kernel_subsys.kset.kobj, NULL, "low_watermark");
+ }
}
static void high_watermark_state(int new_state)
{
- int changed = 0;
-
if (high_watermark_reached != new_state) {
high_watermark_reached = new_state;
- changed = 1;
- }
-
- if (changed)
sysfs_notify(&kernel_subsys.kset.kobj, NULL, "high_watermark");
+ }
}
static int low_vm_enough_memory(long pages)