Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\locking\rwsem.c Create Date:2022-07-28 09:48:03
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:Return just the real task structure pointer of the owner

Proto:static inline struct task_struct *rwsem_owner(struct rw_semaphore *sem)

Type:struct task_struct

Parameter:

TypeParameterName
struct rw_semaphore *sem
287  Return atomic_long_read( & Write owner or one of the read owners as well flags regarding* the current state of the rwsem. Can be used as a speculative* check to see if the write owner is running on the cpu.) & ~RWSEM_OWNER_FLAGS_MASK
Caller
NameDescribe
__up_writelock after writing
__downgrade_writedowngrade write lock to read lock