The patch titled
ipc: only output msgmni value at boot time
has been added to the -mm tree. Its filename is
ipc-only-output-msgmni-value-at-boot-time.patch
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------------------------------------------------------
Subject: ipc: only output msgmni value at boot time
From: Nadia Derbey <Nadia.Derbey@xxxxxxxx>
When posting:
[PATCH 1/8] Scaling msgmni to the amount of lowmem
(see http://lkml.org/lkml/2008/2/11/171), I have added a KERN_INFO message
that is output each time msgmni is recomputed.
In http://lkml.org/lkml/2008/4/29/575 Tony Luck complained that this
message references an ipc namespace address that is useless.
I first thought of using an audit_log instead of a printk, as suggested by
Serge Hallyn. But unfortunately, we do not have any other information
than the namespace address to provide here too. So I chose to move the
message and output it only at boot time, removing the reference to the
namespace.
Signed-off-by: Nadia Derbey <Nadia.Derbey@xxxxxxxx>
Cc: Pierre Peiffer <peifferp@xxxxxxxxx>
Cc: Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>
Acked-by: Tony Luck <tony.luck@xxxxxxxxx>
Cc: "Serge E. Hallyn" <serue@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
ipc/msg.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff -puN ipc/msg.c~ipc-only-output-msgmni-value-at-boot-time ipc/msg.c
--- a/ipc/msg.c~ipc-only-output-msgmni-value-at-boot-time
+++ a/ipc/msg.c
@@ -98,20 +98,15 @@ void recompute_msgmni(struct ipc_namespa
if (allowed < MSGMNI) {
ns->msg_ctlmni = MSGMNI;
- goto out_callback;
+ return;
}
if (allowed > IPCMNI / nb_ns) {
ns->msg_ctlmni = IPCMNI / nb_ns;
- goto out_callback;
+ return;
}
ns->msg_ctlmni = allowed;
-
-out_callback:
-
- printk(KERN_INFO "msgmni has been set to %d for ipc namespace %p\n",
- ns->msg_ctlmni, ns);
}
void msg_init_ns(struct ipc_namespace *ns)
@@ -136,6 +131,10 @@ void msg_exit_ns(struct ipc_namespace *n
void __init msg_init(void)
{
msg_init_ns(&init_ipc_ns);
+
+ printk(KERN_INFO "msgmni has been set to %d\n",
+ init_ipc_ns.msg_ctlmni);
+
ipc_init_proc_interface("sysvipc/msg",
" key msqid perms cbytes qnum lspid lrpid uid gid cuid cgid stime rtime ctime\n",
IPC_MSG_IDS, sysvipc_msg_proc_show);
_
Patches currently in -mm which might be from Nadia.Derbey@xxxxxxxx are
ipc-restore-msgpool-original-value.patch
ipc-only-output-msgmni-value-at-boot-time.patch
idr-change-the-idr-structure.patch
idr-rename-some-of-the-idr-apis-internal-routines.patch
idr-fix-a-printk-call.patch
idr-error-checking-factorization.patch
idr-make-idr_get_new-rcu-safe.patch
idr-make-idr_find-rcu-safe.patch
idr-make-idr_remove-rcu-safe.patch
ipc-call-idr_find-without-locking-in-ipc_lock.patch
ipc-get-rid-of-ipc_lock_down.patch
--
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