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authorakpm@osdl.org <akpm@osdl.org>2005-05-01 08:58:47 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-01 08:58:47 -0700
commitd59dd4620fb8d6422555a9e2b82a707718e68327 (patch)
tree78205657d24efcaa3f8314064951ac3814ed95a7 /ipc/mqueue.c
parent0d8d4d42f2d00eb65262b49f4edd4cf7ef4eb6fc (diff)
downloadlinux-linaro-stable-d59dd4620fb8d6422555a9e2b82a707718e68327.tar.gz
[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.c4
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;
}