So let us look at how we can add locking to scull.

讓我們看看我們是怎樣在scull中加入鎖定機制的第一页自拍偷拍。

Here we see that the first scull device currently holds 20,881 bytes.

這里我們可以看到第一個 scull 設(shè)備當前的大小為20在线观看的黄，881字節(jié)。

We'll step through the creation of a /proc file in the scull driver to show how it is done.

我們將通過scull驅(qū)動程序中一個/proc文件的完整建立過程來說明它的工作原理美女人人操人人射人人干。

The write method in scull is not one of those situations, however.

然而scull中的write函數(shù)卻并不屬于屬于這種情況欧美视频黄网。

The scull implementation has no cleanup work to do, so its stop method is empty.

因為 scull 沒有清除工作可做，所以它的 stop 函數(shù)是空的白色白色白色在线观看平台。

Let us take a quick look at a fragment of the scull memory management code.

讓我們來簡略看一下 scull 的內(nèi)存管理代碼播放一级毛片无码免费播放。

Getting back to our example; the show method used in scull is

再回到我們的示例程序中；下面是 scull 使用的 show 函數(shù)

But first, we take a look at what could go wrong with our simple scull driver and how to avoid these potential problems.

但是在這之前全国产在线，我們先來看一下可能會引發(fā) scull 驅(qū)動程序故障的問題以及怎樣避免這些潛在問題迷j白嫩玩弄灌醉在线视频。

We have chosen to use a separate semaphore for each virtual scull device.

我們已決定為每個虛擬scull設(shè)備都使用各自的信號量。

Here is a simple read_proc implementation for the scull device

這是一個簡單的的用于 scull 設(shè)備的 read_proc 函數(shù)