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ipc: scale msgmni to the number of ipc namespaces

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Since all the namespaces see the same amount of memory (the total one) this
patch introduces a new variable that counts the ipc namespaces and divides
msg_ctlmni by this counter.

Signed-off-by: Nadia Derbey <[email protected]>
Cc: Yasunori Goto <[email protected]>
Cc: Matt Helsley <[email protected]>
Cc: Mingming Cao <[email protected]>
Cc: Pierre Peiffer <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Nadia Derbey 2008-04-29 01:00:40 -07:00 • committed by Linus Torvalds
commit 4d89dc6ab2
4 changed files with 14 additions and 3 deletions
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3
ipc/namespace.c
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@ -20,6 +20,8 @@ static struct ipc_namespace *clone_ipc_ns(struct ipc_namespace *old_ns)
if (ns == NULL)
return ERR_PTR(-ENOMEM);
atomic_inc(&nr_ipc_ns);
sem_init_ns(ns);
msg_init_ns(ns);
shm_init_ns(ns);
@ -83,4 +85,5 @@ void free_ipc_ns(struct kref *kref)
msg_exit_ns(ns);
shm_exit_ns(ns);
kfree(ns);
atomic_dec(&nr_ipc_ns);
}