From: Kimberly Brown <kimbrownkd@gmail.com>
To: Michael Kelley <mikelley@microsoft.com>,
Long Li <longli@microsoft.com>,
Sasha Levin <Alexander.Levin@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Dexuan Cui <decui@microsoft.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v3 2/3] Drivers: hv: vmbus: Set ring_info field to 0 and remove memset
Date: Thu, 14 Mar 2019 16:05:07 -0400 [thread overview]
Message-ID: <b9b604327b885d82ddad2991f55d1b54be6eb1c8.1552592620.git.kimbrownkd@gmail.com> (raw)
In-Reply-To: <cover.1552592620.git.kimbrownkd@gmail.com>
Set "ring_info->priv_read_index" to 0. Now, all of ring_info's fields
are explicitly set in this function. The memset() call is no longer
necessary, so remove it.
Signed-off-by: Kimberly Brown <kimbrownkd@gmail.com>
---
drivers/hv/ring_buffer.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
index 9e8b31ccc142..0386ff48c5ea 100644
--- a/drivers/hv/ring_buffer.c
+++ b/drivers/hv/ring_buffer.c
@@ -197,8 +197,6 @@ int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info,
BUILD_BUG_ON((sizeof(struct hv_ring_buffer) != PAGE_SIZE));
- memset(ring_info, 0, sizeof(struct hv_ring_buffer_info));
-
/*
* First page holds struct hv_ring_buffer, do wraparound mapping for
* the rest.
@@ -232,6 +230,7 @@ int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info,
reciprocal_value(ring_info->ring_size / 10);
ring_info->ring_datasize = ring_info->ring_size -
sizeof(struct hv_ring_buffer);
+ ring_info->priv_read_index = 0;
spin_lock_init(&ring_info->ring_lock);
--
2.17.1
next prev parent reply other threads:[~2019-03-14 20:05 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-22 2:07 [PATCH] Drivers: hv: vmbus: Add mutex lock to channel show functions Kimberly Brown
2019-01-22 3:46 ` Dexuan Cui
2019-01-22 6:42 ` Kimberly Brown
2019-01-22 18:40 ` Dexuan Cui
2019-01-28 19:58 ` Kimberly Brown
2019-01-29 19:20 ` Dexuan Cui
2019-01-31 15:19 ` Sasha Levin
2019-01-31 16:45 ` Michael Kelley
2019-01-31 17:47 ` Kimberly Brown
2019-02-01 14:13 ` Sasha Levin
2019-02-01 18:24 ` Dexuan Cui
2019-02-02 20:07 ` Kimberly Brown
2019-02-15 1:54 ` Sasha Levin
2019-02-15 2:27 ` Kimberly Brown
2019-02-22 3:46 ` [PATCH v2 0/2] Fix a race condition vulnerability in "_show" functions Kimberly Brown
2019-02-22 3:47 ` [PATCH v2 1/2] Drivers: hv: vmbus: Refactor chan->state if statement Kimberly Brown
2019-02-24 16:54 ` Michael Kelley
2019-02-22 3:47 ` [PATCH v2 2/2] Drivers: hv: vmbus: Add a channel ring buffer mutex lock Kimberly Brown
2019-02-24 16:53 ` Michael Kelley
2019-02-26 6:24 ` Kimberly Brown
2019-03-14 20:04 ` [PATCH v3 0/3] Drivers: hv: vmbus: Fix a race condition in "_show" functions Kimberly Brown
2019-03-14 20:05 ` [PATCH v3 1/3] Drivers: hv: vmbus: Refactor chan->state if statement Kimberly Brown
2019-03-14 20:05 ` Kimberly Brown [this message]
2019-03-29 16:01 ` [PATCH v3 2/3] Drivers: hv: vmbus: Set ring_info field to 0 and remove memset Michael Kelley
2019-03-14 20:05 ` [PATCH v3 3/3] Drivers: hv: vmbus: Fix race condition with new ring_buffer_info mutex Kimberly Brown
2019-03-14 22:45 ` Stephen Hemminger
2019-03-17 1:49 ` Kimberly Brown
2019-03-20 20:06 ` Stephen Hemminger
2019-03-21 3:47 ` Kimberly Brown
2019-03-21 16:04 ` Michael Kelley
2019-03-28 4:30 ` Kimberly Brown
2019-03-28 18:42 ` Stephen Hemminger
2019-03-29 16:04 ` Michael Kelley
2019-04-10 22:59 ` [PATCH v3 0/3] Drivers: hv: vmbus: Fix a race condition in "_show" functions Sasha Levin
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