zswap_pool_last_get

Name:zswap_pool_last_get

Proto:static struct zswap_pool *zswap_pool_last_get(void)

Type:struct zswap_pool

Parameter:Nothing

467

struct zswap_pool * pool, * last = NULL

469

_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

471

list_for_each_entry_rcu - iterate over rcu list of given type*@pos: the type * to use as a loop cursor.*@head: the head for your list.*@member: the name of the list_head within the struct.(pool, & RCU-protected iteration , list)

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WARN_ONCE(!last && it completed, but couldn't create the initial pool , "%s: no page storage pool!\n", __func__)

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If Not zswap_pool_get(last) Then last = NULL

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_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()

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Return last

**Caller**
Name	Describe
zswap_shrink

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