From mboxrd@z Thu Jan 1 00:00:00 1970 From: "K. Y. Srinivasan" Subject: [PATCH 001/206] Staging: hv: Get rid of blkvsc_mutex Date: Mon, 9 May 2011 14:54:43 -0700 Message-ID: <1304978288-22999-1-git-send-email-kys@microsoft.com> References: <1304978242-22958-1-git-send-email-kys@microsoft.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1304978242-22958-1-git-send-email-kys@microsoft.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: devel-bounces@linuxdriverproject.org Errors-To: devel-bounces@linuxdriverproject.org To: gregkh@suse.de, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, virtualization@lists.osdl.org Cc: Haiyang Zhang , Abhishek Kane List-Id: virtualization@lists.linuxfoundation.org The blkvsc_mutex is unnecessary as the state it is protecting (blkdev->users) is already protected by the spin lock. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang Signed-off-by: Abhishek Kane Signed-off-by: Hank Janssen --- drivers/staging/hv/blkvsc_drv.c | 5 ----- 1 files changed, 0 insertions(+), 5 deletions(-) diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c index db44cf6..cfef1c0 100644 --- a/drivers/staging/hv/blkvsc_drv.c +++ b/drivers/staging/hv/blkvsc_drv.c @@ -27,7 +27,6 @@ #include #include #include -#include #include #include #include @@ -113,8 +112,6 @@ struct block_device_context { int users; }; -static DEFINE_MUTEX(blkvsc_mutex); - static const char *g_blk_driver_name = "blkvsc"; /* {32412632-86cb-44a2-9b5c-50d1417354f5} */ @@ -620,7 +617,6 @@ static int blkvsc_release(struct gendisk *disk, fmode_t mode) { struct block_device_context *blkdev = disk->private_data; - mutex_lock(&blkvsc_mutex); spin_lock(&blkdev->lock); if (blkdev->users == 1) { spin_unlock(&blkdev->lock); @@ -631,7 +627,6 @@ static int blkvsc_release(struct gendisk *disk, fmode_t mode) blkdev->users--; spin_unlock(&blkdev->lock); - mutex_unlock(&blkvsc_mutex); return 0; } -- 1.7.4.1