The patch titled
Subject: kernel-forkc-avoid-division-by-zero-fix
has been added to the -mm tree. Its filename is
kernel-forkc-avoid-division-by-zero-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kernel-forkc-avoid-division-by-zero-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kernel-forkc-avoid-division-by-zero-fix.patch
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: kernel-forkc-avoid-division-by-zero-fix
use clamp(), per Oleg
Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
Cc: Heinrich Schuchardt <xypron.glpk@xxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/fork.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff -puN kernel/fork.c~kernel-forkc-avoid-division-by-zero-fix kernel/fork.c
--- a/kernel/fork.c~kernel-forkc-avoid-division-by-zero-fix
+++ a/kernel/fork.c
@@ -280,13 +280,7 @@ static void set_max_threads(void)
threads = div64_u64((u64) totalram_pages * (u64) PAGE_SIZE,
(u64) THREAD_SIZE * 8UL);
- if (threads > MAX_THREADS)
- threads = MAX_THREADS;
-
- if (threads < MIN_THREADS)
- threads = MIN_THREADS;
-
- max_threads = (int) threads;
+ max_threads = clamp(threads, MIN_THREADS, MAX_THREADS);
}
void __init fork_init(void)
_
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