diff options
author | David S. Miller <davem@davemloft.net> | 2011-04-11 16:44:25 -0400 |
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committer | David S. Miller <davem@davemloft.net> | 2011-04-11 16:44:25 -0400 |
commit | 1c01a80cfec6f806246f31ff2680cd3639b30e67 (patch) | |
tree | 0b554aad2ec1da71ecf6339d4ba51617bfe1dc3c /ipc/msg.c | |
parent | c44d79950b2daa1025e62eede73e4e4a274d1ef3 (diff) | |
parent | 4a9f65f6304a00f6473e83b19c1e83caa1e42530 (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/smsc911x.c
Diffstat (limited to 'ipc/msg.c')
-rw-r--r-- | ipc/msg.c | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -704,7 +704,7 @@ long do_msgsnd(int msqid, long mtype, void __user *mtext, | |||
704 | msq->q_stime = get_seconds(); | 704 | msq->q_stime = get_seconds(); |
705 | 705 | ||
706 | if (!pipelined_send(msq, msg)) { | 706 | if (!pipelined_send(msq, msg)) { |
707 | /* noone is waiting for this message, enqueue it */ | 707 | /* no one is waiting for this message, enqueue it */ |
708 | list_add_tail(&msg->m_list, &msq->q_messages); | 708 | list_add_tail(&msg->m_list, &msq->q_messages); |
709 | msq->q_cbytes += msgsz; | 709 | msq->q_cbytes += msgsz; |
710 | msq->q_qnum++; | 710 | msq->q_qnum++; |
@@ -842,7 +842,7 @@ long do_msgrcv(int msqid, long *pmtype, void __user *mtext, | |||
842 | * Disable preemption. We don't hold a reference to the queue | 842 | * Disable preemption. We don't hold a reference to the queue |
843 | * and getting a reference would defeat the idea of a lockless | 843 | * and getting a reference would defeat the idea of a lockless |
844 | * operation, thus the code relies on rcu to guarantee the | 844 | * operation, thus the code relies on rcu to guarantee the |
845 | * existance of msq: | 845 | * existence of msq: |
846 | * Prior to destruction, expunge_all(-EIRDM) changes r_msg. | 846 | * Prior to destruction, expunge_all(-EIRDM) changes r_msg. |
847 | * Thus if r_msg is -EAGAIN, then the queue not yet destroyed. | 847 | * Thus if r_msg is -EAGAIN, then the queue not yet destroyed. |
848 | * rcu_read_lock() prevents preemption between reading r_msg | 848 | * rcu_read_lock() prevents preemption between reading r_msg |