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authorNadia Derbey <Nadia.Derbey@bull.net>2008-04-29 01:00:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-29 08:06:12 -0700
commite2c284d8a87f95df9b47c6a13168a844ca7c03e9 (patch)
tree6eb27ea254d47c94dbfb33da23314dd69479e56e /ipc/ipcns_notifier.c
parent424450c1dbe72b6e2637e91108417d7d9580c4c3 (diff)
downloadlinux-e2c284d8a87f95df9b47c6a13168a844ca7c03e9.tar.gz
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 <Nadia.Derbey@bull.net> Cc: Yasunori Goto <y-goto@jp.fujitsu.com> Cc: Matt Helsley <matthltc@us.ibm.com> Cc: Mingming Cao <cmm@us.ibm.com> Cc: Pierre Peiffer <pierre.peiffer@bull.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc/ipcns_notifier.c')
-rw-r--r--ipc/ipcns_notifier.c2
1 files changed, 2 insertions, 0 deletions
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
*/