Commit df2a4a71 authored Jun 06, 2011 by K. Y. Srinivasan Committed by Greg Kroah-Hartman Jun 07, 2011

Staging: hv: vmbus: Introduce read dependency in hv_get_ringbuffer_availbytes()



Introduce read dependency in hv_get_ringbuffer_availbytes().

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

parent ef0d5b23

drivers/staging/hv/ring_buffer.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -50,6 +50,8 @@ hv_get_ringbuffer_availbytes(struct hv_ring_buffer_info *rbi,
		{
		u32 read_loc, write_loc;

		smp_read_barrier_depends();

		/* Capture the read/write indices before they changed */
		read_loc = rbi->ring_buffer->read_index;
		write_loc = rbi->ring_buffer->write_index;