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| author | Nadia Derbey <Nadia.Derbey@bull.net> | 2008-04-29 01:00:40 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 08:06:12 -0700 |
| commit | 4d89dc6ab2711258bfd12c72d753f3ad56b244e2 (patch) | |
| tree | a971c08eab247a7d69ae5fe54c4e0bdfef5d29ba /ipc/namespace.c | |
| parent | f7bf3df8be72d98afa84f5ff183e14c1ba1e560d (diff) | |
| download | linux-4d89dc6ab2711258bfd12c72d753f3ad56b244e2.tar.gz linux-4d89dc6ab2711258bfd12c72d753f3ad56b244e2.tar.bz2 linux-4d89dc6ab2711258bfd12c72d753f3ad56b244e2.zip | |
ipc: scale msgmni to the number of ipc namespaces
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 <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/namespace.c')
| -rw-r--r-- | ipc/namespace.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/ipc/namespace.c b/ipc/namespace.c index 1b967655eb35..fe3c97aa99dc 100644 --- a/ipc/namespace.c +++ b/ipc/namespace.c @@ -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); } |