函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\posix_acl.c Create Date:2022-07-29 11:04:52
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：get_cached_acl

函数原型：struct posix_acl *get_cached_acl(struct inode *inode, int type)

返回类型：struct posix_acl

参数：

类型参数名称
struct inode *inode
inttype
40  p等于acl_by_type(inode, type)
43  循环
44  _read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other
45  acl等于cu_dereference() - fetch RCU-protected pointer for dereferencing*@p: The pointer to read, prior to dereferencing* This is a simple wrapper around rcu_dereference_check().( * p)
46  如果非acl或is_uncached_acl(acl)或_inc_not_zero - increment a refcount unless it is 0*@r: the refcount to increment* Similar to atomic_inc_not_zero(), but will saturate at REFCOUNT_SATURATED* and WARN.* Provides no memory ordering, it is assumed the caller has guaranteed the则退出
49  _read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()
50  cpu_relax()
52  _read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()
53  返回:acl
调用者
名称描述
get_acl