docs: filesystems: replace to_dev() with kobj_to_dev()
Commit a423296375
("driver-core: Move kobj_to_dev from genhd.h to device.h")
introduced kobj_to_dev() function.
Signed-off-by: Denis Efremov <efremov@linux.com>
Link: https://lore.kernel.org/r/20200830144135.6956-1-efremov@linux.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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@ -172,14 +172,13 @@ calls the associated methods.
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To illustrate::
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#define to_dev(obj) container_of(obj, struct device, kobj)
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#define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr)
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static ssize_t dev_attr_show(struct kobject *kobj, struct attribute *attr,
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char *buf)
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{
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struct device_attribute *dev_attr = to_dev_attr(attr);
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struct device *dev = to_dev(kobj);
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struct device *dev = kobj_to_dev(kobj);
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ssize_t ret = -EIO;
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if (dev_attr->show)
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@ -154,14 +154,13 @@ sysfs 会为这个类型调用适当的方法。当一个文件被读写时,
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示例:
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#define to_dev(obj) container_of(obj, struct device, kobj)
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#define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr)
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static ssize_t dev_attr_show(struct kobject *kobj, struct attribute *attr,
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char *buf)
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{
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struct device_attribute *dev_attr = to_dev_attr(attr);
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struct device *dev = to_dev(kobj);
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struct device *dev = kobj_to_dev(kobj);
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ssize_t ret = -EIO;
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if (dev_attr->show)
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