From mboxrd@z Thu Jan 1 00:00:00 1970 From: "K. Y. Srinivasan" Subject: [PATCH 08/46] Staging: hv: storvsc: Get rid of release_stor_device() by inlining the code Date: Sat, 27 Aug 2011 11:31:07 -0700 Message-ID: <1314469905-7058-8-git-send-email-kys@microsoft.com> References: <1314469874-7017-1-git-send-email-kys@microsoft.com> <1314469905-7058-1-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: <1314469905-7058-1-git-send-email-kys@microsoft.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: devel-bounces@linuxdriverproject.org Sender: devel-bounces@linuxdriverproject.org To: gregkh@suse.de, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, virtualization@lists.osdl.org Cc: Haiyang Zhang List-Id: virtualization@lists.linuxfoundation.org Get rid of release_stor_device() by inlining the code. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang --- drivers/staging/hv/storvsc.c | 19 ++----------------- 1 files changed, 2 insertions(+), 17 deletions(-) diff --git a/drivers/staging/hv/storvsc.c b/drivers/staging/hv/storvsc.c index 0f8c609..1976a34 100644 --- a/drivers/staging/hv/storvsc.c +++ b/drivers/staging/hv/storvsc.c @@ -67,21 +67,6 @@ static inline struct storvsc_device *get_in_stor_device( return stor_device; } -/* Drop ref count to 1 to effectively disable get_out_stor_device() */ -static inline struct storvsc_device *release_stor_device( - struct hv_device *device) -{ - struct storvsc_device *stor_device; - - stor_device = (struct storvsc_device *)device->ext; - - /* Busy wait until the ref drop to 2, then set it to 1 */ - while (atomic_cmpxchg(&stor_device->ref_count, 2, 1) != 2) - udelay(100); - - return stor_device; -} - /* Drop ref count to 0. No one can use stor_device object. */ static inline struct storvsc_device *final_release_stor_device( struct hv_device *device) @@ -401,8 +386,8 @@ int storvsc_dev_remove(struct hv_device *device) struct storvsc_device *stor_device; unsigned long flags; - - stor_device = release_stor_device(device); + stor_device = (struct storvsc_device *)device->ext; + atomic_dec(&stor_device->ref_count); spin_lock_irqsave(&device->channel->inbound_lock, flags); stor_device->destroy = true; -- 1.7.4.1