函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\genhd.h Create Date:2022-07-27 06:45:33
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：disk_has_partitions

函数原型：static inline bool disk_has_partitions(struct gendisk *disk)

返回类型：bool

参数：

类型参数名称
struct gendisk *disk
250  bool ret = false
252  _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
253  if (({
253  typeof( * (disk-> Array of pointers to partitions indexed by partno. * Protected with matching bdev lock but stat and other * non-critical accesses use RCU. Always access through * helpers.)) * ________p1 = (typeof( * (disk-> Array of pointers to partitions indexed by partno. * Protected with matching bdev lock but stat and other * non-critical accesses use RCU. Always access through * helpers.)) * )({
253  union{typeof(( Array of pointers to partitions indexed by partno. * Protected with matching bdev lock but stat and other * non-critical accesses use RCU. Always access through * helpers.)) __val;char __c[1];}__u
253  如果1则__read_once_size( & (( Array of pointers to partitions indexed by partno. * Protected with matching bdev lock but stat and other * non-critical accesses use RCU. Always access through * helpers.)), __c, Array of pointers to partitions indexed by partno. * Protected with matching bdev lock but stat and other * non-critical accesses use RCU. Always access through * helpers.的长度)
253  否则__read_once_size_nocheck( & (( Array of pointers to partitions indexed by partno. * Protected with matching bdev lock but stat and other * non-critical accesses use RCU. Always access through * helpers.)), __c, Array of pointers to partitions indexed by partno. * Protected with matching bdev lock but stat and other * non-critical accesses use RCU. Always access through * helpers.的长度)
253  循环
253  当0循环
253  __val
253  })
253  循环
253  当0循环
253  })->len > 1)
254  ret = true
255  _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()
257  返回:ret