rwsem_set_nonspinnable

Name:Set the RWSEM_NONSPINNABLE bits if the RWSEM_READER_OWNED flag* remains set. Otherwise, the operation will be aborted.

Proto:static inline void rwsem_set_nonspinnable(struct rw_semaphore *sem)

Type:void

Parameter:

Type	Parameter	Name
struct rw_semaphore *	sem

263

owner = 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.)

265

Do

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If Not (owner & The least significant 3 bits of the owner value has the following* meanings when set.* - Bit 0: RWSEM_READER_OWNED - The rwsem is owned by readers* - Bit 1: RWSEM_RD_NONSPINNABLE - Readers cannot spin on this lock.) Then Break

268

If owner & RWSEM_NONSPINNABLE Then Break

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When Not atomic_long_try_cmpxchg( & 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., & owner, owner | RWSEM_NONSPINNABLE) cycle

**Caller**
Name	Describe
rwsem_read_trylock

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