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authorNadia Derbey <Nadia.Derbey@bull.net>2007-10-18 23:40:53 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-19 11:53:47 -0700
commitf4566f04854d78acfc74b9acb029744acde9d033 (patch)
tree6fa631076d11511e2d9685b23c195835c31f4900 /ipc/msg.c
parent28028313134e9f11e49f74a4beaa47c91e5ebf06 (diff)
downloadlinux-f4566f04854d78acfc74b9acb029744acde9d033.tar.gz
ipc: fix wrong comments
This patch fixes the wrong / obsolete comments in the ipc code. Also adds a missing lock around ipc_get_maxid() in shm_get_stat(). Signed-off-by: Nadia Derbey <Nadia.Derbey@bull.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc/msg.c')
-rw-r--r--ipc/msg.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/ipc/msg.c b/ipc/msg.c
index 9f545826bcf..b7274dbf091 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -156,6 +156,13 @@ static inline void msg_rmid(struct ipc_namespace *ns, struct msg_queue *s)
ipc_rmid(&msg_ids(ns), &s->q_perm);
}
+/**
+ * newque - Create a new msg queue
+ * @ns: namespace
+ * @params: ptr to the structure that contains the key and msgflg
+ *
+ * Called with msg_ids.mutex held
+ */
static int newque(struct ipc_namespace *ns, struct ipc_params *params)
{
struct msg_queue *msq;
@@ -250,8 +257,8 @@ static void expunge_all(struct msg_queue *msq, int res)
/*
* freeque() wakes up waiters on the sender and receiver waiting queue,
- * removes the message queue from message queue ID
- * IDR, and cleans up all the messages associated with this queue.
+ * removes the message queue from message queue ID IDR, and cleans up all the
+ * messages associated with this queue.
*
* msg_ids.mutex and the spinlock for this message queue are held
* before freeque() is called. msg_ids.mutex remains locked on exit.
@@ -278,6 +285,9 @@ static void freeque(struct ipc_namespace *ns, struct msg_queue *msq)
ipc_rcu_putref(msq);
}
+/*
+ * Called with msg_ids.mutex and ipcp locked.
+ */
static inline int msg_security(struct kern_ipc_perm *ipcp, int msgflg)
{
struct msg_queue *msq = container_of(ipcp, struct msg_queue, q_perm);