[patch] sched, cgroups: fix MIN_SHARES on 64 bit boxen

From: Mike Galbraith
Date: Sat Jun 04 2011 - 05:30:12 EST



c8b28116 claimed to have no user-visible effect, but allows setting cpu.shares
to < MIN_SHARES, which the user then indeed sees.

Signed-off-by: Mike Galbraith <efault@xxxxxx>
---
kernel/sched.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6/kernel/sched.c
===================================================================
--- linux-2.6.orig/kernel/sched.c
+++ linux-2.6/kernel/sched.c
@@ -292,7 +292,7 @@ static DEFINE_SPINLOCK(task_group_lock);
* (The default weight is 1024 - so there's no practical
* limitation from this.)
*/
-#define MIN_SHARES 2
+#define MIN_SHARES (scale_load(2))
#define MAX_SHARES (1UL << (18 + SCHED_LOAD_RESOLUTION))

static int root_task_group_load = ROOT_TASK_GROUP_LOAD;


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