From: Roland McGrath <roland@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] Remove CHILD_MAX
Date: Wed, 11 Jul 2007 18:01:10 -0700 (PDT) [thread overview]
Message-ID: <20070712010110.120F14D0555@magilla.localdomain> (raw)
The CHILD_MAX macro in limits.h should not be there. It claims to be the
limit on processes a user can own, but its value is wrong for that.
There is no constant value, but a variable resource limit (RLIMIT_NPROC).
Nothing in the kernel uses CHILD_MAX.
The proper thing to do according to POSIX is not to define CHILD_MAX at all.
The sysconf (_SC_CHILD_MAX) implementation works by calling getrlimit.
Signed-off-by: Roland McGrath <roland@redhat.com>
---
include/linux/limits.h | 1 -
1 files changed, 0 insertions(+), 1 deletions(-)
diff --git a/include/linux/limits.h b/include/linux/limits.h
index c4b4e57..2d0f941 100644
--- a/include/linux/limits.h
+++ b/include/linux/limits.h
@@ -5,7 +5,6 @@
#define NGROUPS_MAX 65536 /* supplemental group IDs are available */
#define ARG_MAX 131072 /* # bytes of args + environ for exec() */
-#define CHILD_MAX 999 /* no limit :-) */
#define LINK_MAX 127 /* # links a file may have */
#define MAX_CANON 255 /* size of the canonical input queue */
#define MAX_INPUT 255 /* size of the type-ahead buffer */
next reply other threads:[~2007-07-12 1:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-12 1:01 Roland McGrath [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-03-13 8:42 [PATCH] Remove CHILD_MAX Roland McGrath
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