diff options
| author | akpm@osdl.org <akpm@osdl.org> | 2005-05-01 08:58:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-05-01 08:58:47 -0700 |
| commit | d59dd4620fb8d6422555a9e2b82a707718e68327 (patch) | |
| tree | 78205657d24efcaa3f8314064951ac3814ed95a7 /ipc/mqueue.c | |
| parent | 0d8d4d42f2d00eb65262b49f4edd4cf7ef4eb6fc (diff) | |
| download | lwn-d59dd4620fb8d6422555a9e2b82a707718e68327.tar.gz lwn-d59dd4620fb8d6422555a9e2b82a707718e68327.zip | |
[PATCH] use smp_mb/wmb/rmb where possible
Replace a number of memory barriers with smp_ variants. This means we won't
take the unnecessary hit on UP machines.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'ipc/mqueue.c')
| -rw-r--r-- | ipc/mqueue.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/ipc/mqueue.c b/ipc/mqueue.c index cb0cd3cf3b5a..33f71520b89c 100644 --- a/ipc/mqueue.c +++ b/ipc/mqueue.c @@ -767,7 +767,7 @@ static inline void pipelined_send(struct mqueue_inode_info *info, list_del(&receiver->list); receiver->state = STATE_PENDING; wake_up_process(receiver->task); - wmb(); + smp_wmb(); receiver->state = STATE_READY; } @@ -786,7 +786,7 @@ static inline void pipelined_receive(struct mqueue_inode_info *info) list_del(&sender->list); sender->state = STATE_PENDING; wake_up_process(sender->task); - wmb(); + smp_wmb(); sender->state = STATE_READY; } |