dev_exception_add

Name:alled under devcgroup_mutex

Proto:static int dev_exception_add(struct dev_cgroup *dev_cgroup, struct dev_exception_item *ex)

Type:int

Parameter:

Type	Parameter	Name
struct dev_cgroup *	dev_cgroup
struct dev_exception_item *	ex

90

lockdep_assert_held( & devcgroup_mutex)

92

excopy = kmemdup - duplicate region of memory*@src: memory region to duplicate*@len: memory region length*@gfp: GFP mask to use* Return: newly allocated copy of @src or %NULL in case of error

93

If Not excopy Then Return -ENOMEM

97

If type != type Then Continue

99

If major != major Then Continue

101

If minor != minor Then Continue

104

access |= access

105

106

excopy = NULL

109

If (excopy != NULL) Then list_add_tail_rcu - add a new entry to rcu-protected list*@new: new entry to be added*@head: list head to add it before* Insert a new entry before the specified head

111

Return 0

**Caller**
Name	Describe
propagate_exception	propagate_exception - propagates a new exception to the children@devcg_root: device cgroup that added a new exception@ex: new exception to be propagated* returns: 0 in case of success, != 0 in case of error
devcgroup_update_access	Modify the exception list using allow/deny rules

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