From e2c284d8a87f95df9b47c6a13168a844ca7c03e9 Mon Sep 17 00:00:00 2001 From: Nadia Derbey Date: Tue, 29 Apr 2008 01:00:44 -0700 Subject: ipc: recompute msgmni on ipc namespace creation/removal Introduce a notification mechanism that aims at recomputing msgmni each time an ipc namespace is created or removed. The ipc namespace notifier chain already defined for memory hotplug management is used for that purpose too. Each time a new ipc namespace is allocated or an existing ipc namespace is removed, the ipcns notifier chain is notified. The callback routine for each registered ipc namespace is then activated in order to recompute msgmni for that namespace. Signed-off-by: Nadia Derbey Cc: Yasunori Goto Cc: Matt Helsley Cc: Mingming Cao Cc: Pierre Peiffer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/ipcns_notifier.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'ipc/ipcns_notifier.c') diff --git a/ipc/ipcns_notifier.c b/ipc/ipcns_notifier.c index 0786af6ce3e..c7974609def 100644 --- a/ipc/ipcns_notifier.c +++ b/ipc/ipcns_notifier.c @@ -29,6 +29,8 @@ static int ipcns_callback(struct notifier_block *self, switch (action) { case IPCNS_MEMCHANGED: /* amount of lowmem has changed */ + case IPCNS_CREATED: + case IPCNS_REMOVED: /* * It's time to recompute msgmni */ -- cgit v1.2.3