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Date: Mon, 6 Jun 2011 15:49:51 -0700 From: "K. Y. Srinivasan" <kys@...rosoft.com> To: gregkh@...e.de, linux-kernel@...r.kernel.org, devel@...uxdriverproject.org, virtualization@...ts.osdl.org Cc: "K. Y. Srinivasan" <kys@...rosoft.com>, Haiyang Zhang <haiyangz@...rosoft.com>, Abhishek Kane <v-abkane@...rosoft.com> Subject: [PATCH 27/49] Staging: hv: vmbus: Fix the memory barrier in hv_ringbuffer_read() Use the correct barrier interface. Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com> Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com> Signed-off-by: Abhishek Kane <v-abkane@...rosoft.com> --- drivers/staging/hv/ring_buffer.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/staging/hv/ring_buffer.c b/drivers/staging/hv/ring_buffer.c index 3da3330..932af1a 100644 --- a/drivers/staging/hv/ring_buffer.c +++ b/drivers/staging/hv/ring_buffer.c @@ -513,7 +513,7 @@ int hv_ringbuffer_read(struct hv_ring_buffer_info *inring_info, void *buffer, /* Make sure all reads are done before we update the read index since */ /* the writer may start writing to the read area once the read index */ /*is updated */ - mb(); + smp_mb(); /* Update the read index */ hv_set_next_read_location(inring_info, next_read_location); -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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