[RFC][PATCH] allow users to increase the oom-killer-score of their applications

[Bodo Eggert <7eggert@gmx.de>]

Allow users to increase the oom score of their applications.

Signed-off-by: Bodo Eggert <7eggert@gmx.de>

---

This patch is tested by "in the editor, it looks good".

There is a small race possibly preventing root from changing the 
score, but I don't think it's an issue, since kill -9 exisis and
the race is tiny.

--- ./fs/proc/base.c~	2006-07-07 12:20:54.000000000 +0200
+++ ./fs/proc/base.c	2006-07-07 12:20:54.000000000 +0200
@@ -962,8 +962,6 @@ static ssize_t oom_adjust_write(struct f
 	char buffer[8], *end;
 	int oom_adjust;
 
-	if (!capable(CAP_SYS_RESOURCE))
-		return -EPERM;
 	memset(buffer, 0, 8);
 	if (count > 6)
 		count = 6;
@@ -974,6 +972,9 @@ static ssize_t oom_adjust_write(struct f
 		return -EINVAL;
 	if (*end == '\n')
 		end++;
+	if (!capable(CAP_SYS_RESOURCE)
+	&&  task->oomkilladj > oom_adjust)
+		return -EPERM;
 	task->oomkilladj = oom_adjust;
 	if (end - buffer == 0)
 		return -EIO;

-- 
Funny quotes:
20. The only substitute for good manners is fast reflexes.
-
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